INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 149 (FEBRUARY 2003)
NEW ORBITS
ADS Name P (yr) T e W(2000) 2003 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2004
--------------------------------------------------------------------------------------
2963 STF 460 372.42 2053.68 0.124 82.9 136.5 0.72 SCARDIA
04100+8042 0.9667 0.860 31.0 118.5 1999.8915 137.8 0.72
CHR 14 28.77 1993.01 0.602 170.0 10.5 0.284 OLEVIC &
04119+2338 12.5122 0.231 63.3 57.6 2000.7678 13.5 0.279 CVETKOVIC
STT 74 185. 2006.20 0.390 102.8 113.6 0.154 ALZNER
04123+0939 1.9459 0.510 96. 314. 1993.10 111.8 0.174
3230 BU 311 596.45 1980.98 0.532 124.3 140.9 0.48 SCARDIA &
04269-2405 0.6036 1.029 62.0 345.0 1999.7655 142.0 0.48 BRUZZI
3472 A 2622 158.46 1988.44 0.022 79.5 249.3 0.24 SCARDIA
04505+0103 2.2718 0.250 123.8 163.4 1993.0924 247.9 0.24
COU 2031 21.05 1987.72 0.233 148.7 154.6 0.119 MANTE
04464+4221 17.1021 0.166 84.8 171.8 1998.109 159.1 0.076
5514 STF 963 AB 403.15 1959.58 0.526 48.2 310.4 0.24 SCARDIA
06531+5927 0.8930 0.695 64.6 167.5 1997.079 313.2 0.24 et al. (*)
FIN 323 194.29 1972.81 0.577 151.4 330.0 0.192 OLEVIC &
07143-2621 1.8529 0.195 73.1 50.6 1996.1752 330.4 0.196 CVETKOVIC
8569 STT 251 540.56 1894.33 0.855 165.1 58.8 0.64 SCARDIA
12291+3123 0.6660 0.553 33.4 96.0 1997.29 59.0 0.65
FIN 318 Aa 90.17 1975.81 0.703 0.6 138.3 0.159 OLEVIC &
14373-4608 3.9925 0.195 113.5 85.3 1993.0989 136.6 0.158 CVETKOVIC
FIN 372 36.23 1992.96 0.398 7.3 21.3 0.156 MANTE
14567-6247 9.9365 0.147 115.2 191.4 1996.1814 18.2 0.170
9769 STF 1989 183.16 1901.57 0.943 164.0 24.4 0.71 SCARDIA
15396+7959 1.9655 0.530 121.8 300.1 2001.3589 24.2 0.71
FIN 354 61.74 2026.00 0.127 82.9 274.1 0.031 OLEVIC &
16115+0943 5.8305 0.117 93.5 234.2 1992.3075 270.3 0.044 CVETKOVIC
10017 HU 481 113.99 1998.30 0.595 10.9 306.2 0.20 SCARDIA
16212+2259 3.1582 0.466 143.3 7.0 1996.540 295.2 0.21
10235 STF 2107 AB 268.35 1895.66 0.570 43.5 99.1 1.38 SCARDIA
16518+2840 1.3415 0.992 28.6 251.2 2001.3427 99.6 1.38 et al. (*)
I 1306 62.29 2011.00 0.670 19.5 17.1 0.224 OLEVIC &
17018-5108 5.7795 0.255 83.6 107.7 1992.4550 17.8 0.213 CVETKOVIC
COU 415 236.36 2224.65 0.696 175.6 273.2 0.288 DOCOBO
17221+2310 1.5231 0.532 153.8 161.3 1995.4369 270.0 0.299 & LING
FIN 373 37.64 1994.42 0.674 112.7 133.3 0.121 OLEVIC &
17221-7007 9.5640 0.144 73.4 263.2 1992.4496 136.2 0.118 CVETKOVIC
COU 1462 23.39 2017.25 0.682 38.6 78.1 0.088 DOCOBO
19089+3404 15.3912 0.313 83.6 272.7 2000.7667 99.6 0.066 & LING
COU 327 AB 62.76 2048.14 0.576 65.9 203.6 0.046 DOCOBO
20216+1930 5.7361 0.137 80.3 309.3 1994.7236 209.8 0.053 & LING
KUI 102 58.72 1959.07 0.294 11.1 1.2 0.31 SCARDIA
21001+0731 6.1307 0.290 130.0 137.7 1999.7279 357.7 0.30 et al. (*)
16914 HU 1325 318.80 1953.51 0.423 173.5 17.7 0.79 SCARDIA
23401+1258 1.1292 0.860 17.9 99.9 1995.86 18.8 0.80
(*) SCARDIA, PRIEUR, KOECHLIN and ARISTIDI
PAPERS PUBLISHED IN 2002
1. ARGYLE, R.W.; ALZNER, A. & HORCH, E.P.: "Orbits for five southern
visual binaries". Astron. Astrophys. 384, 171 (2002).
2. ARGYLE, R.W. & COURTOUT, J-F.: "Micrometric measurements of double stars
from 2001.0 to 2002.0". The Webb Soc. Double Star Section Circ. 10, 3
(2002).
3. BALEGA, I.I. et al.: "Speckle interferometry of nearby multiple stars".
Astron. Astrophys. 385, 87 (2002).
4. BALEGA, Y.Y. et al.: "The Spectroscopic and Interferometric Orbit of
Gliese 150.2". Astron. Letters 28(11), 773 (2002).
5. BARTKEVICCIUS, A. & GUDAS, A.: "GAIA and Population II Visual Binaries".
Astrophys. Space Science 280, 125 (2002).
6. CARQUILLAT, J.M. et al.: "Contribution to the search for binaries among
Am stars - III. HD 7119: a double-lined spectroscopic binary and a triple
system". Monthly Notice 336 (3), 1043 (2002).
7. CLOSE, L.M. et al.: "An Adaptive Optics Survey of M8M9 Stars: Discovery
of Four Very Low Mass Binaries with at Least One System Containing a
Brown Dwarf Companion". Astrophys. J. Lett. 567 (1), L53 (2002).
8. DEMERS, H. et al.: "The Quadruple Wolf-Rayet System GP Cephei: Spectral
Types, Masses, Mass-Loss Rate, and Colliding Winds". Astrophys. J. 577
(1), 409 (2002).
9. DOMMANGET, J. & MORLET, G.: "Composantes d'ecouvertes par Hipparcos dans
des systemes connus / Components discovered by Hipparcos in known systems".
Observations et Travaux. 54, 2 (2002)
10. DOMMANGET, J. & NYS, O.: "Catalogue des Composantes d'etoiles doubles et
multiples (CCDM) - Seconde edition / Catalogue of the components of Double
and Multiple Stars (CCDM) - Second edition". Observations et Travaux, 54,
5 (2002)
11. DOUGLAS, R.G. et al.: "Tomographic Separation of Composite Spectra. X. The
Massive Close Binary HD 101131". Astrophys. J. 574 (2), 957 (2002).
12. FABRICIUS, C. et al.: "The Tycho double star catalogue". Astron. Astrophys.
384, 180 (2002).
13. FEKEL, F.C. et al.: "The quadruple system mu Orionis: Three-Dimensional
orbit and physical parameters". Astron. J. 123 (3), 1723 (2002).
14. FERNANDES, J.; MOREL, P. & LEBRETON, Y.: "A calibration of the 85 Peg
binary system". Astron. Astrophys. 392, 529 (2002).
15. GONTCHAROV, G.A. & KIYAEVA, O.V.: "Astrometric Orbits from a Direct
combination of Ground-Based Catalogs with the Hipparcos Catalog". Astron.
Letters 28(4), 261 (2002).
16. GONTCHAROV, G.A. & KIYAEVA, O.V.: "Photocentric orbits from a direct
combination of ground-based astrometry with Hipparcos - I. Comparison with
known orbits". Astron. Astrophys. 391, 647 (2002).
17. GOULD, A. & SALIM, S.: "Searching for Failed Supernovae with Astrometric
Binaries". Astrophys. J. 572 (2), 944 (2002).
18. GRIFFIN, R.E.M. & GRIFFIN, R.F.: "Composite spectra Paper 11: alpha
Equulei, an astrometric binary with an Am secondary". Monthly Notice 330
(2), 288 (2002).
19. HAN, I. & GATEWOOD, G.: "A Precise Orbit Determination of chi 1 Orionis
from Astrometric and Radial Velocity Data". Publ. Astron. Soc. Pacific,
114, 224 (2002).
20. HARVIN, J.A. et al.: "Tomographic Separation of Composite Spectra. VIII.
The Physical Properties of the Massive Compact Binary in the Triple Star
System HD 36486 (delta Orionis A)". Astrophys. J. 565 (2), 1216 (2002).
21. HORCH, E.P. et al.: "Speckle observations of binary stars with the WIYN
Telescope. II. Relative astrometry measures during 1998-2000". Astron. J.
123 (6), 3442 (2002).
22. HORCH, E.P. et al.: "Speckle observations of binary stars with the WIYN
Telescope. III. A partial survey of A, F and G dwarfs". Astron. J. 124 (4),
2245 (2002).
23. LOWRANCE, P.J.; KIRKPATRICK, J.D. & BEICHMAN, C.A: "A Distant Stellar
Companion in the upsilon Andromedae System". Astrophys. J. Lett. 572 (1),
L79 (2002).
24. MAKAROV, V.V.: "The Rate of Visual Binaries among the Brightest X-Ray
Stars". Astrophys. J. Lett. 576 (1), L61 (2002).
25. MARCHENKO, S.V. et al.: "Massive Binary WR 112 and Properties of Wolf-Rayet
Dust". Astrophys. J. Lett. 565 (1), L59 (2002).
26. MASON, B.D. et al.: "Speckle interferometry at the US Naval Observatory.
VIII". Astron. J. 124 (4), 2254 (2002).
27. MASSEY, P.; PENNY, L.R. & VUKOVICH, J.: "Orbits of Four Very Massive
Binaries in the R136 Cluster". Astrophys. J. 565 (2), 982 (2002).
28. MORLET, G.; SALAMAN, M. & GILI, R.: "Nice Observatory CCD measurements of
visual double stars (4th series)". Astron. Astrophys. 396, 933 (2002).
29. PAARDEKOOPER, S. J. et al.: "On the variability of the visual binary WR 86
- WC7 with a beta Cephei companion". Astron. Astrophys. 384, 1012 (2002).
30. PENNY, L. R. et al.: "Tomographic Separation of Composite Spectra. IX. The
Massive Close Binary HD 115071". Astrophys. J. 575 (2), 1050 (2002).
31. POURBAIX, D.: "Precision and accuracy of the orbital parameters derived
from 2D & 1D space observations of visual or astrometric binaries".
Astron. Astrophys. 385, 686 (2002).
32. POURBAIX, D. et al.: "Constraining the difference in convective blueshift
between the components of alpha Centauri with precise radial velocities".
Astron. Astrophys. 386, 280 (2002).
33. PRIEUR, J.L. et al.: "High Angular Resolution Observations of Late-Type
Stars". Astrophys. J. Suppl. Ser. 139 (1), 249 (2002).
34. PRIEUR, J.L. et al.: "Speckle Observations of Composite Spectrum Stars
with PISCO in 1993-1998". Astrophys. J. Suppl. Ser. 142 (1), 95 (2002).
35. RICHICHI, A. ; CALAMI, G. & STECKLUM, B.: "New binary stars discovered by
lunar occultations. VI". Astron. Astrophys. 282, 178 (2002).
36. RUBINOV, A.V.; PETROVA, A.V. & ORLOV, V.V.: "Dynamical Evolution of
Multiple Stars". Astron. Reports 46 (11), 942 (2002).
37. SEYMOUR, D.M. et al.: "Binary star orbits. II. Preliminary first orbits
for 117 systems". Astron. J. 123 (2), 1023 (2002).
38. SHATSKY, N. & TOKOVININ, A.A.: "The mass ratio distribution of B-type
visual binaries in the Sco OB2 association". Astron. Astrophys. 382, 92
(2002).
39. SILVESTRI, N.M.; OSWALT, T.D. & HAWLEY, S.L.: "Wide binary systems and
the nature of high-velocity white dwarfs". Astron. J. 124 (2), 1118 (2002).
40. SMEKHOV, M.G.: "Spectroscopic Components in the Multiple Systems ADS 10683
and ADS 11791". Astron. Letters 28(6), 393 (2002).
41. STERZIK, M.F. & TOKOVININ, A.A.: "Relative orientation of orbits in triple
stars". Astron. Astrophys. 384, 1030 (2002).
42. TAMAZIAN, V.S. et al.: "Preliminary Orbits and System Masses for Five
Binary T Tauri Stars". Astrophys. J. 578 (2), 925 (2002).
43. THEVENIN, F. et al.: "Asteroseismology and calibration of alpha Cen binary
system". Astron. Astrophys. 392, L9 (2002).
44. TOKOVININ, A.A. & SMEKHOV, M.G.: "Statistics of spectroscopic sub-systems
in visual multiple stars". Astron. Astrophys. 382, 118 (2002).
45. TORRES, G. et al.: "Testting models of stellar evolution for metal-poor
stars: an interferometric-spectroscopic orbit for the binary HD 195987".
Astron. J. 124 (3), 1716 (2002).
ANNOUNCEMENT: PUBLICATIONS BY J. DOMMANGET
a) Related to the preparation and publication of the second edition of the
CCDM (See: Information Circular n° 148)
1. DOMMANGET, J. & NYS, O. -1994 "Catalogue des Composantes d'etoiles Doubles
et Multiples (CCDM) - premiere edition / Catalogue of the components of
Double and Multiple Stars (CCDM) - first edition". Comm. de l'Obs. R. de
Belg., Serie A, 115, pp.26 (Released at CDS, Strasbourg - ref.: I -211).
2. DOMMANGET, J. & NYS, O. -1994 "Erreurs relevees dans le catalogue Index
1961,0". Bull. d'Inform. du Centre de Donnees Astron., Strasbourg, 45, pp.
7-17.
3. DOMMANGET, J. & NYS, O. -1995 "Catalogue d'Entree HIPPARCOS (HIC):
corrections et donnees complementaires". Bull. d'Inform. du Centre de
Donnees Astron., Strasbourg, 46, pp.13-22.
4. DOMMANGET, J. & NYS, O. -1996 "Catalogue d'Entree HIPPARCOS (HIC):
corrections et donnees complementaires II". Bull. d'Inform. du Centre
de Donnees Astron., Strasbourg, 48, pp.19-33.
5. DOMMANGET, J. - 1998 "Le catalogue Hipparcos et le catalogue Tycho -
Analyse des resultats concernant les etoiles doubles visuelles". Bulletin
de la Commission des etoiles doubles de la SAF, 34, pp.11-20.
6. DOMMANGET, J. - 2000 "The Hipparcos catalogue and the Tycho Catalogue -
Analysis of the results for the visual double stars". The Observatory,
120, n° 1156, pp.202-210.
7. DOMMANGET, J. & NYS, O. -2000 "Histoire d'un Catalogue, le CCDM".
Observations et Travaux, 52, pp. 26-31.
8. DOMMANGET, J. & NYS, O. - 2000 "The visual double stars observed by the
Hipparcos satellite". Astronomy & Astrophysics, 363, pp. 991-994
(+ errata: 364, pp. 927-930), (Released at CDS, Strasbourg - ref.: I -260).
9. DOMMANGET, J. - 2000 "La situation du CCDM et sa completude". Bulletin de
la Commission des etoiles doubles de la SAF, 36, 2000, pp. 36-40.
10. DOMMANGET, J. - 2000/2001 "Apports de la Mission Hipparcos a la
connaissance des binaires". Ciel et Terre, 117, pp.148-154, 2001;
Bulletin de la Commission des etoiles doubles de la SAF, 37, pp. 11-24.
11. DOMMANGET, J. & MORLET, G. - 2002 "Composantes decouvertes par Hipparcos
dans des systemes connus / Components discovered by Hipparcos in known
systems". Observations et Travaux, 54, pp.2-4.
12. DOMMANGET, J. & NYS, O. - 2002 "Catalogue des Composantes d'etoiles
doubles et multiples (CCDM) - Seconde edition / Catalogue of the
components of Double and Multiple Stars (CCDM) - Second edition.
Observations et Travaux, 54, pp.5-29 (Released at CDS, Strasbourg - ref.:
I -274).
b) General:
1. DOMMANGET J. -1999 "Cette mesure d'etoile double est-elle vraiment utile?".
Bulletin de la Commission des etoiles doubles de la SAF, 35, pp.17-23;
Ciel et Terre, 116 (3), pp. 34-37.
2. DOMMANGET, J. - 2002 "Seeing? Comprends pas...". Ciel et Terre, 118, pp.
14-17.
RECTIFICATION
In 1992 J.C. Thorel resolved A(BD+60 274) component of STI 237 multiple system.
It was named JCT2 Aa. According with the new designation made for this system
in the WDS in 2002, this component should be JCT2 Fa, not JCT2 Aa.
Jean-Claude Thorel
Invited scientist of l'OCA
Nice - France
****************************************************************************************
The deadline for contributions to Information Circular No. 150 is:
June 15th 2003
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Tel: +34 981592747
Fax: +34 981597054
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
http://www.usc.es/astro
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 150 (JUNE 2003)
NEW ORBITS
ADS Name P (yr) T e W(2000) 2003 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2004
--------------------------------------------------------------------------------------
RST 1205AB 210.37 2122.81 0.348 33.5 100.5 0.537 LING
01084-5515 1.7113 0.804 61.9 271.7 1999.7842 102.2 0.533
PLEY H 156 2.02 1989.92 0.456 84.6 90.7 0.058 OLEVIC &
03453+2428 178.5055 0.055 83.6 225.5 1994.703 267.9 0.027 CVETKOVIC
T TAU Ba-Bb 33.06 2029.49 0.627 68.8 276.5 0.105 TAMAZIAN
04220+1932 10.8893 0.104 52.0 80.1 2001.05 281.5 0.108
CHR 153 72.33 2055.36 0.738 6.1 116.4 0.294 OLEVIC &
04375+1509 4.9773 0.543 69.8 297.2 1996.022 120.1 0.307 CVETKOVIC
COU 768 25.95 2008.38 0.467 48.8 128.3 0.105 DOCOBO
06503+2409 13.8728 0.118 144.2 45.6 2000.163 114.6 0.097 & LING
FIN 116 94.14 1995.36 0.559 59.8 233.3 0.148 MANTE
08275-5501 3.8241 0.219 129.7 100.7 1993.0928 229.1 0.156
8552 A 79 AB 99.44 1986.83 0.918 115.5 94.6 0.347 MANTE
12270-0332 3.6203 0.469 104.0 254.6 1997.4079 94.0 0.351
8553 STF 1643 549.41 2193.49 0.580 155.3 6.6 2.660 OLEVIC &
12272+2701 0.6552 2.695 115.2 286.1 2000.329 6.4 2.665 CVETKOVIC
COU 606 24.21 2009.22 0.295 90.6 348.2 0.163 DOCOBO
14138+3059 14.8699 0.158 160.5 225.8 2000.384 334.9 0.154 & LING
9324 A 347 212.35 2123.25 0.197 83.4 251.2 0.579 DOCOBO &
14369+4813 1.6953 0.494 145.1 31.2 2001.359 250.2 0.579 ANDRADE
MLR 347 39.20 1978.67 0.079 34.1 260.6 0.162 OLEVIC &
15258+8430 9.1843 0.193 133.5 265.5 1993.351 252.1 0.170 CVETKOVIC
12505 HU 75 127.15 2008.20 0.702 172.9 346.7 0.249 SCARDIA
19296-1239 2.8313 0.531 41.9 255.6 1998.587 354.2 0.225 et al. (*)
15530 HU 774 83.34 2043.61 0.484 94.8 173.8 0.185 ANDRADE
21597+4907 4.3197 0.141 28.5 258.5 2001.777 175.8 0.184
(*) SCARDIA, PRIEUR, KOECHLIN and ARISTIDI
****************************************************************************************
The deadline for contributions to Information Circular No. 151 is:
October 15th 2003
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Tel: +34 981592747
Fax: +34 981597054
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
http://www.usc.es/astro
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 151 (OCTOBER 2003)
NEW ORBITS
ADS Name P (yr) T e W(2000) 2003 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2004
--------------------------------------------------------------------------------------
17180 A 1249 129.72 1989.44 0.046 59.4 131.0 0.046 ZIRM
00024+1047 2.7751 0.366 97.2 231.4 1995.9180 112.4 0.055
51 HU 1201 47.06 1983.89 0.651 128.1 307.7 0.216 ZIRM
00055+3406 7.6505 0.138 91.5 23.9 1998.7798 307.6 0.216
2044 SEE 19 212.56 2027.22 0.899 177.1 271.3 0.207 LING
02405-2408 1.6936 0.523 112.3 63.5 1996.8954 269.4 0.201
LPM 248 298.34 1978.30 0.320 39.9 283.7 1.136 ZIRM
06579-4417 1.2067 4.396 107.9 42.2 1993.9824 278.7 1.194
6999 BU 586 962.25 1992.91 0.672 71.4 200.4 0.160 MANTE
08474-1703 0.3741 0.919 65.2 83.5 1996.8666 204.0 0.168
FIN 364 35.84 1989.18 0.951 97.9 124.0 0.149 MANTE
10465-6416 10.0446 0.145 106.0 122.8 1993.0903 123.2 0.155
9909 STF 1998 AB 45.90 2043.12 0.743 27.0 330.3 0.557 DOCOBO
16044-1122 7.8431 0.654 33.3 162.2 2001.5619 335.7 0.624 & LING
11640 FIN 332 Aa (I) 50.96 1956.22 0.032 313.9 316.4 0.149 MASON &
18455+0530 7.0644 0.165 96.2 9.0 2001.5697 315.5 0.155 HARTKOPF
11640 FIN 332 Aa (II) 27.01 1994.46 0.798 137.1 317.0 0.154 MASON &
18455+0530 13.3284 0.095 105.6 13.5 2001.5697 316.3 0.160 HARTKOPF
11640 FIN 332 Aa 57.92 1992.88 0.166 131.5 314.6 0.156 OLEVIC &
18455+0530 6.2157 0.174 98.8 79.0 1997.3945 313.5 0.164 CVETKOVIC
11640 FIN 332 Bb (I) 100.14 1973.46 0.256 140.5 298.1 0.104 MASON &
18455+0530 3.5950 0.170 103.8 108.6 2001.5697 295.8 0.098 HARTKOPF
11640 FIN 332 Bb (II) 34.49 1972.65 0.988 235.2 297.7 0.095 MASON &
18455+0530 10.4378 0.201 111.7 93.3 2001.5697 294.7 0.083 HARTKOPF
11640 FIN 332 Bb 93.92 1972.23 0.242 140.3 117.8 0.109 OLEVIC &
18455+0530 3.8330 0.163 105.3 278.6 1997.3945 115.5 0.103 CVETKOVIC
WOR 9 210.09 1937.47 0.150 154.3 279.4 0.564 ZIRM
20302+2651 1.7136 1.421 108.0 130.8 1996.626 275.9 0.547
FIN 336 43.48 1972.28 0.593 170.3 127.7 0.123 OLEVIC &
20311-1503 8.2803 0.124 55.1 96.1 1996.5320 131.5 0.123 CVETKOVIC
MCA 62 Aa 56.41 1974.08 0.104 93.6 271.8 0.133 OLEVIC &
20410+3905 6.3818 0.134 86.2 330.7 1988.6631 272.2 0.139 CVETKOVIC
LDS 720 BC 209. 2082. 0.256 50. 173.1 3.012 HARTKOPF
20452-3120 1.7225 3.18 137. 36. 1991.46 171.8 2.984 & MASON (x)
14424 BU 367 AB 99.99 1934.17 0.256 118.5 141.5 0.33 SCARDIA
20550+2805 3.6002 0.407 68.5 185.0 2001.707 143.6 0.31 et al. (*)
14942 A 2288 105.66 1949.52 0.623 130.2 235.4 0.31 SCARDIA
21243+0343 3.4071 0.294 130.0 79.4 1995.574 233.9 0.31 et al. (*)
FIN 330 AB 20.75 1984.64 0.590 27.8 343.1 0.044 OLEVIC &
21477-3054 17.3488 0.096 114.5 179.3 1996.8240 287.9 0.025 CVETKOVIC
HO 183 122.52 1972.22 0.944 27.9 223.9 2.079 ZIRM
22248+2233 2.9384 1.315 140.4 348.4 1996.87 223.6 2.109
(*) SCARDIA, PRIEUR, KOECHLIN and ARISTIDI
(x) NOTE: LDS 720 (WDS 20452-3120) is a high common-proper-motion triple, comprised of
an ~80 arcminute AB pair and a 3-4 arcsecond BC pair. Following up on a comment by F.M.
Rica Romero (Spanish American League of Astron., Circ #1, 2001) orbital analysis of BC
determined that several observations in the WDS attributed to it were actually of a
similar binary located ~80 arcseconds south of LDS 720A. As the first measure of this
pair appears to have been by Charles Worley in 1978, it has been designated
WDS 20452-3122 = WOR 40.
****************************************************************************************
Summary of Sydney Business Meeting
by C.D. Scarfe
This is a short summary of the business meeting of Commission 26, which took place in
the afternoon of July 18, 2003, during the recent IAU General Assembly in Sydney. It
was chaired by the outgoing president, C. Scarfe, and was attended by the following:
C. Allen, F. Arenou, R. Argyle, A. Boden, J. Davis, F. Fekel, W. Hartkopf, J. Kub'at,
J. Ling, B. Mason, T. Oswalt, T. Pauls, D. Pourbaix, W. Tango, T. ten Brummelaar, A.
Tokovinin, N. Turner, W. van Altena, E. Weis and H. Zinnecker. A more complete report
will be published in the IAU Transactions, and a preprint of that report is available
on the Commission's website.
C. Scarfe gave a report on events during the past triennium. He announced the deaths,
during that period, of members N. Argue, E. Cabrita, M. Herrera, and K. Strand, as well
as that of D. Zulevic during the previous triennium, and the meeting observed a few
moments of silence in their memory.
Twenty new members have joined the Commission, bringing the total membership to 128,
from 34 countries.
The chairman then reported on the recent election, in which just over half the
membership voted. For the period 2003 to 2006, the president will be W. Hartkopf, and
the vice-president, C. Allen. The OC will be made up of new members J. Davis, E. Oblak
and T. Oswalt, along with continuing members F. Fekel, P. Lampens and J. Ling.
The chairman then gave a brief account of IAU Colloquium 191, held in M'erida,
Yucat'an, M'exico in February 2003, and followed it with some remarks on other
proposals for meetings, which had not been accepted by the Executive Committee. He
concluded with some comments on the new rules for the conduct of Commission and
Division operations.
W. Hartkopf gave a short summary of developments at the Commission's website, and
invited suggestions for further improvements. It is intended that the site's URL will
remain http://ad.usno.navy.mil/wds/dsl.html\#iau for the next three years at least.
B. Mason spoke about Special Session 3 on a new classification scheme for double stars.
That session had approved a resolution adopting the WDS scheme and encouraging
completion of a complete catalogue by the Washington group. The Commission endorsed
that resolution, and is currently setting up a Working Group to support that work.
J. Ling discussed the history and current status of the Commission's Information
Circulars, which were begun by P. Muller almost fifty years ago. They are now
distributed electronically, and their contents are becoming increasingly diverse. They
have ISSN number 1024-7769, and are listed as IAUDS on the NASA Astrophysics Data
System. Several new directions for the Circulars were discussed.
W. Hartkopf thanked C. Scarfe and the outgoing OC members for their efforts during the
past three years, and then turned his attention to the next three. Some possible topics
and sites for meetings were discussed, as well as future catalogues and a CDROM that
would collect several of the latter together.
There followed several short reports on major new observing facilities and additions to
established ones. J. Davis described recent observations with the Sydney University
Stellar Interferometer (SUSI). T. ten Brummelaar outlined the approach to completion of
the CHARA array on Mt. Wilson. T. Pauls spoke about recent developments at the Navy
Prototype Optical Interferometer. Finally, H. Zinnecker pointed out that the first
results had been obtained with the Very Large Telescope Interferometer.
Next came some short reports on new major catalogues. B. Mason reported a large increase
in the size of the Washington Double star Catalog, and announced that a new CD version
will shortly be available. W. Hartkopf described the rapid progress of the USNO CCD
Astrographic Catalog and a project to re-scan the epoch-1930 plates of the AGK2 using
modern equipment. Then D. Pourbaix spoke about the Base de donn'ees des 'etoiles doubles
et multiples de Besancon, on behalf of E. Oblak, who was unable to attend. He also
described his own work for Commission 30 on the Ninth Catalogue of Spectroscopic Binary
Orbits, since it is also relevant to Commission 26.
R. Argyle followed these talks with a discussion of amateur projects in double-star
measurement, some of which are very substantial and of high quality.
H. Zinnecker noted that some recently discovered giant planets are in orbit around
components of binary stars, which raises the interesting question of the long-term
stability of such planets' orbits.
A letter from P. Lampens was read. It expressed concern over the difficulty encountered
by some double star observers in gaining access to telescopes to pursue long-term
projects, and in getting data published in widely read journals, so that others may use
them, even if it is premature to draw astrophysically useful conclusions from them.
There was widespread agreement that these concerns affect many people, and the meeting
agreed to include formal statements of concern in the published report. For details,
please see the preprint on the Commission website.
The meeting was then adjourned.
****************************************************************************************
ANNOUNCEMENT
A New Cassegrain telescope (D= 0.62 m; F = 6.2 m) has been installed at the Ram'on
Mar'ia Aller Observatory. Among its main missions, double and multiple star research
will occupy a prominent place.
J. A. Docobo
Director
R. M. Aller Observatory
Universidade de Santiago de Compostela
Spain
****************************************************************************************
The deadline for contributions to Information Circular No. 152 is:
February 15th 2004
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Tel: +34 981592747
Fax: +34 981597054
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
http://www.usc.es/astro
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 152 (FEBRUARY 2004)
NEW ORBITS
ADS Name P (yr) T e W(2000) 2004 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2005
--------------------------------------------------------------------------------------
17180 A 1249 129.72 1989.44 0.046 59.4 131.0 0.046 ZIRM
00024+1047 2.7751 0.366 97.2 231.4 1995.9180 112.4 0.055
854 A 2003 82.72 2004.87 0.109 133.0 157.9 0.106 DOCOBO
01023+0552 4.3520 0.197 72.4 61.7 1998.7800 163.0 0.094 & LING
COU 2031 19.72 1987.50 0.208 147.9 218.9 0.016 MANTE
04464+4221 18.2556 0.160 84.3 169.6 1998.109 312.9 0.050
6828 A 551 AB 54.71 2001.88 0.428 62.4 257.6 0.066 DOCOBO
08285-0231 6.5802 0.284 83.8 211.4 1999.8836 285.8 0.029 & LING
8231 STF 1555 AB 820.00 2025.20 0.677 150.0 148.3 0.694 DOCOBO
11363+2747 0.4390 1.909 86.0 33.6 2002.164 148.4 0.694 & LING
SEE 219 AB 73.55 2072.14 0.552 22.7 30.5 0.163 DOCOBO
15088-4517 4.8946 0.275 73.8 302.8 1996.1815 33.7 0.163 & LING
CHR 51 13.54 1981.04 0.915 61.3 161.9 0.076 MANTE
15513-0305 26.5879 0.184 103.6 79.2 1991.3298 144.9 0.067
15971 STF 2909 AB 587.18 1973.39 0.396 129.8 181.6 2.071 OLEVIC &
22288-0001 0.6131 3.847 138.2 255.9 2001.6821 180.2 2.095 CVETKOVIC
COU 540 262.32 1926.16 0.285 13.5 310.1 0.324 MANTE
22344+2623 1.3724 0.282 0.9 162.5 1996.628 311.1 0.325
16130 A 2695 139.68 2012.63 0.502 111.6 261.0 0.081 OLEVIC &
22384-0754 2.5773 0.235 71.4 184.7 1995.7598 266.6 0.087 CVETKOVIC
FIN 375 Aa 143.32 2038.07 0.419 20.6 188.5 0.175 OLEVIC &
23474-7118 2.5118 0.168 63.6 284.6 1991.25 189.5 0.175 CVETKOVIC
PAPERS PUBLISHED IN 2003
1. ALENCAR, S. H. P. et al.: "The pre-main sequence spectroscopic binary AK Scorpii revisited".
Astron. Astrophys. 409 (3), 1037 (2003).
2. ANDRADE, M. & DOCOBO, J. A.: "Orbital Dynamics Analysis of Binary Systems in Mass-Loss Scenarios".
Rev. Mex. A. C. 15, 223 (2003).
3. ARGYLE, R. W. & COURTOUT, J.-F.: "Micrometric measures of double stars from 2002.0 to 2003.0".
The Webb Soc. Double Star Section Cir. 11, 2 (2003).
4. BARSONY, M.; KORESKO, C. & MATTHEWS K.: "A Search for Close Binaries in the Ophiuchi Star-forming
Region". Astrophys. J. 591 (2), 1064 (2003).
5. BEUST, H.: "Symplectic integration of hierarchical stellar systems". Astron. Astrophys. 400 (3),
1129 (2003).
6. BOFFIN, H. M. J. & POURBAIX, D.: "HD 112914: a nearby one-solar-mass binary system". The
Observatory 123, 126 (2003).
7. BOUY, H. et al.: "Multiplicity of Nearby Free-Floating Ultracool Dwarfs: A Hubble Space Telescope
WFPC2 Search for Companions". Astron. J. 126 (3), 1526 (2003).
8. BRANDEKER, A.; Ray JAYAWARDHANA, R. & NAJITA, J.: "Keck Adaptative Optics Imaging of Nearby Young
Stars: Detection of Close Multiple Systems". Astron. J. 126 (4), 2009 (2003).
9. BUDAJ, J. & ILIEV, I. K.: "Abundance analysis of Am binaries and search for tidally driven abundance
anomalies I. HD 33254, HD 178449 and HD 198391". Monthly Notices 346 (1), 27 (2003).
10. BURGASSER, A. J. et al.: "Binarity in Brown Dwarfs: T Dwarf Binaries Discovered with the Hubble
Space Telescope Wide Field Planetary Camera 2". Astrophys. J. 586 (1), 512 (2003).
11. CANTAZARO, G.; LEONE, F. & LETO, P.: "HD 191110 a SB2 system with HgMn and Hg components - Orbital
elements and abundance analysis". Astron. Astrophys. 407 (2), 669 (2003).
12. CARQUILLAT, J.-M.; PRIEUR, J.-L. & GINESTET, N.: "Contribution to the study of composite spectra
IX. Spectroscopic orbital elements of 10 systems". Monthly Notices 342 (4), 1271 (2003).
13. CARQUILLAT, J.-M. et al.: "Contribution to the search for binaries among Am stars V. Orbital
elements of eight short-period spectroscopic binaries". Monthly Notices 346 (2), 555 (2003).
14. CHEREPASHCHUK, A. M. & KARETNIKOV, V. G.: "Evolution of WolfRayet Stars in Binary Systems: An
Analysis of the Mass and Orbital-Eccentricity Distributions". Astron. Reports 47 (1), 38 (2003).
15. CLOSE, L. M. et al.: "Detection of Nine M8.0L0.5 Binaries: The Very Low Mass Binary Population and
Its Implications for Brown Dwarf and Very Low Mass Star Formation". Astrophys. J. 587 (1), 407 (2003).
16. CORREIA, S.; RICHICHI, A. & SCHOLLER, M.: "Prospects of high angular resolution measurements of
binary stars properties with VLTI". Astrophys. Space Science 286 (1-2), 191 (2003).
17. CORTI, M.; NIEMELA, V. & MORRELL, N.: "LSS 1135: An O-type spectroscopic binary in the galactic OB
association Bochum 7". Astron. Astrophys. 405 (2), 571 (2003).
18. DOCOBO, J. A.: "Some Integrable Cases of the Two-Body Problem with Mass Depending Both on Time and
Distance". Astron. Letters 29 (5), 344 (2003).
19. DOCOBO, J. A. & LING, J. F.: "Orbits and masses of twenty double stars discovered by Paul Couteau".
Astron. Astrophys. 409 (3), 989 (2003).
20. DOCOBO, J. A. et al.: "Orbit and System Mass for the Visual Binary WDS 23186 +6807 AB". Astron. J.
126 (3), 1522 (2003).
21. DRUMMOND, J.; MILSTER, S.; RYAN, P. & ROBERTS, L. C. Jr.: " Iota Cassiopeiae: Orbit, Masses, and
Photometry from Adaptive Optics Imaging in the I and H Bands". Astrophys. J. 585 (2), 1007 (2003).
22. GATEWOOD, G.; COBAN, L. & HAN, I.: "An astrometric study of the low-mass binary star ROSS 614".
Astron. J. 125 (3), 1530 (2003).
23. GINESTET, N. et al.: "Contribution to the search for binaries among Am stars IV. HD 100054B and
187258". Monthly Notices 342 (1), 61 (2003).
24. GIZIS, J. E. et al.: "Hubble Space Telescope Observation of Binary Very Low Mass Stars and Brown
Dwarfs". Astron. J. 125 (6), 3302 (2003).
25. GOLDBERG, J.; MAZEH, T. & LATHAM, D. W.: "On the Mass-Ratio Distribution of Spectroscopic Binaries".
Astrophys. J. 591 (1), 397 (2003).
26. GRIFFIN, R. F. & A. A. SUCHKOV, A. A.: "The Nature of Overluminous F Stars Observed in a Radial-
Velocity Survey". Astrophys. J. Suppl. Ser. 147 (1), 103 (2003).
27. HALBWACHS, L.; MAYOR, M.; UDRY, S. & ARENOU, F. : "Multiplicity among solar-type stars III.
Statistical properties of the F7-K binaries with periods up to 10 years". Astron. Astrophys. 397 (1),
159 (2003).
28. HARTIGAN, P. & KENYON, S. J.: "A Spectroscopic Survey of Subarcsecond Binaries in the Taurus-Auriga
Dark Cloud with the Hubble Space Telescope". Astrophys. J. 583 (1), 334 (2003).
29. HUMMEL, C. A. et al.: "First observations with a co-phased six-station optical Long-Baseline Array:
Application to the Triple Star Eta Virginis". Astron. J. 125 (5), 2630 (2003).
30. ISMAILOV, N. Z.: "The Herbig Ae/Be Star HD 200775 as a Spectroscopic Binary". Astron. Reports 47
(3), 206 (2003).
31. JAO, W-C. et al.: "The solar neighborhood. VII. Discovery and characterization of nearby multiples
in the CTIO parallax investigation". Astron. J. 125 (1), 332 (2003).
32. JENSEN, E. L. N. & AKESON, R. L.: "Protoplanetary Disk Mass Distribution in Young Binaries".
Astrophys. J. 584 (2), 875 (2003).
33. KAPLAN, G. H. & MAKAROV, V. V.: "Astrometric detection of binary companions and planets:
Acceleration of proper motion". Astron. Nach. 324 (5), 419 (2003).
34. KERVELLA, P. et al.: "The diameters of Centauri A and B - A comparison of the asteroseismic and
VINCI/VLTI views". Astron. Astrophys. 404 (3), 1087 (2003).
35. KERVELLA, P. et al.: "The interferometric diameter and internal structure of Sirius A". Astron.
Astrophys. 408 (2), 681 (2003).
36. KISELEV, A. A. & KIYAEVA, O. V.: "Determining the Minimum Sum of the Component Masses for a Binary
with a Known Parallax from Observations of a Short Arc of Its Apparent Motion". Astron. Letters 29
(1), 37 (2003).
37. KOENIGSBERGER, G.; MOFFAT, A. F. J. & AUER, L. H. : "Ultraviolet Spectroscopy of the Massive LMC
Multiple Systems Sk-67-18 (Br 5) and HD 36402 (Br 31)". Rev. Mex. A. A. 39 (2), 213 (2003).
38. LOINARD, L., RODRIGUEZ, L. F. & RODRIGUEZ, M. I.: "Ejection of a Low-Mass Star in a Young Stellar
System in Taurus". Astrophys. J. Lett. 587 (1), L47 (2003).
39. LUK'YANOV, L. G.; NASONOVA, L. P. & SHIRMIN, G. I.: "Hill Stability in the Many-Body Problem".
Astron. Letters 29 (4), 274 (2003).
40. LUK'YANOV, L. G.; NASONOVA, L. P. & SHIRMIN, G. I.: "The LagrangeJacobi Equation in the Finite-Size
Many-Body Problem". Astron. Letters 29 (9), 635 (2003).
41. MARTIN, E. L.: "A New Multiple Stellar System in the Solar Neighborhood". Astron. J. 126, (2) 918
(2003)
42. MAZEH, T. et al.: "The Mass Ratio Distribution in Main-Sequence Spectroscopic Binaries Measured by
Infrared Spectroscopy". Astrophys. J. 599 (2), 1344 (2003).
43. McSWAIN, M. V.: "The Massive Triple Star System HD 16429 A". Astrophys. J. 595, (2) 1124 (2003).
44. MELO, C. H. F.: "The short period multiplicity among T Tauri stars". Astron. Astrophys. 410 (1),
269 (2003).
45. MEYER, R. D.: "Binary Star Speckle Photometry and Astrophysical Implications". Pub. Astron. Soc. of
the Pacific 115 (810), 1019 (2003).
46. NURMI, P. & BOFFIN, H. M. J.: "Observational properties of visual binaries as modelled using a
synthetic catalogue - I. For visual apparent magnitudes m_v < 15". Astron. Astrophys. 408 (2), 803
(2003).
47. POURBAIX, D. & BOFFIN, H. M. J.: "Reprocessing the Hipparcos Intermediate Astrometric Data of
spectroscopic binaries - II. Systems with a giant component". Astron. Astrophys. 398 (3), 1163 (2003).
48. POURBAIX, D. et al.: "How many Hipparcos Variability-Induced Movers are genuine binaries?". Astron.
Astrophys. 399 (3), 1167 (2003).
49. PRATO, L.; GREENE, T. P. & SIMON, M.: "Astrophysics of Young Star Binaries". Astrophys. J. 584 (2),
853 (2003).
50. PRIEUR, J.-L. et al.: "Speckle Observations of Composite Spectrum Stars. II. Differential Photometry
of the Binary Components". Astrophys. J. Suppl. Ser. 144 (2), 263 (2003).
51. RAGUZOVA, N. V.: "Population Synthesis of Rapidly Rotating Main-Sequence Stars with Companions".
Astron. Reports 47 (5), 401 (2003).
52. RANSOM, R. R. et al.: "Very Long Baseline Interferometry Imaging of the RS Canum Venaticorum Binary
Star System HR 5110". Astrophys. J. 587 (1), 390 (2003).
53. RUCINSKI, S. M. et al.: "Radial Velocity Studies of Close Binary Stars. VIII". Astron. J. 125 (6),
3258 (2003).
54. SCHAEFER G. H. et al.: "Dynamical Masses of Young Stars in Multiple Systems". Astron. J. 126 (4),
1971 (2003).
55. SCHERTL, D. et al.: "Orbital motion of the massive multiple stars in the Orion Trapezium". Astron.
Astrophys. 402 (1), 267 (2003).
56. STERZIK, M. F.; DURISEN, R. H. & ZINNECKER, H.: " How do binary separations depend on cloud initial
conditions?". Astron. Astrophys. 411 (2), 91 (2003).
57. TAYLOR, S. T.; HARVIN, J. A. & McALISTER, H. A.: "The CHARA Catalog of Orbital Elements of
Spectroscopic Binary Stars". Pub. Astron. Soc. of the Pacific 115 (807), 609 (2003).
58. TOKOVININ, A. et al.: "Fundamental parameters and origin of the very eccentric binary 41 Dra".
Astron. Astrophys. 409 (1), 245 (2003).
59. TORRES, G. et al.: "Radial velocity survey of members and candidate members of he TW Hydrae
association". Astron. J. 125 (2), 825 (2003).
60. VALTONEN, M. J. et al.: "Dynamics of Rotating Triple Systems". Astron. Letters 29 (1), 41 (2003).
61. WOITAS J. et al.: "Visual orbit for the low-mass binary Gliese 22 AC from speckle interferometry".
Astron. Astrophys. 406 (1), 293 (2003).
62. WOITAS J.: "A fourth component in the young multiple system V 773 Tauri". Astron. Astrophys. 406
(2), 685 (2003).
****************************************************************************************
The deadline for contributions to Information Circular No. 153 is:
June 15th 2004
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Tel: +34 981592747
Fax: +34 981597054
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
http://www.usc.es/astro
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 153 (JUNE 2004)
NEW ORBITS
ADS Name P (yr) T e W(2000) 2004 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2005
---------------------------------------------------------------------------------------
883 A 1515 170.14 2036.97 0.053 111.6 301.8 0.212 DOCOBO
01049+3649 2.1159 0.237 68.9 282.1 1999.7094 302.8 0.208 & LING
RST2324 111.00 1996.88 0.287 164.3 346.9 0.158 OLEVIC &
03494-1956 3.2432 0.209 135.8 134.5 2001.570 343.1 0.160 CVETKOVIC
RST2333 154.44 1996.04 0.138 17.2 183.7 0.226 OLEVIC &
04093-2025 2.3310 0.337 74.3 113.8 1993.0977 185.0 0.235 CVETKOVIC
5447 STT 156 224.63 2022.30 0.477 82.9 196.7 0.28 SCARDIA
06474+1812 1.6026 0.427 155.8 324.7 2004.210 193.6 0.27 et al. (*)
2MASSW 11.433 2002.856 0.445 24.8 313.0 0.131 DOCOBO &
07467+2001 31.4878 0.221 139.9 352.8 2004.023 267.1 0.181 TAMAZIAN
6811 A 1746 BC 21.78 1998.42 0.079 153.6 307.1 0.149 DOCOBO
08267+2432 16.5289 0.149 19.1 51.0 1999.3214 322.3 0.153 & LING
7662 A 2145 119.25 2001.46 0.32 28.2 40.6 0.117 OLEVIC &
10093+2020 3.0189 0.184 118.1 319.4 1995.1438 37.4 0.122 CVETKOVIC
8035 BU 1077 AB 44.55 2001.94 0.427 48.5 95.2 0.36 SCARDIA
11037+6145 8.0803 0.600 160.4 268.4 2004.213 78.0 0.40 et al. (*)
FIN 370 AB 19.16 2006.46 0.251 79.7 337.3 0.103 MANTE
13574-6229 18.7872 0.148 142.3 171.7 1993.0984 306.9 0.103
10540 BU 1250 701.60 1649.68 0.077 119.7 114.4 1.889 MANTE
17248+3044 0.5131 1.754 0.9 173.2 2001.362 114.9 1.889
10621 A 352 64.05 1982.58 0.309 1.3 326.0 0.054 DOCOBO
17324+2848 0.6206 0.177 98.6 292.9 1996.5291 315.8 0.045 & LING
STA 3 89.06 2004.96 0.602 133.0 296.2 0.047 OLEVIC &
19073+3606 4.0423 0.128 122.2 228.8 1992.3105 280.9 0.039 CVETKOVIC
13028 BU 148 AB 783.31 2032.84 0.620 38.1 230.9 0.607 LING
19520-1021 0.4596 1.365 120.5 217.5 2002.602 229.9 0.605
(*) SCARDIA, PRIEUR, ARISTIDI, KOECHLIN and SALA
ANNOUNCEMENT
THE SPECKLE CAMERA PISCO IS NOW OPERATIONAL ON THE 1-METER ZEISS TELESCOPE OF
I.N.A.F. - OSSERVATORIO ASTRONOMICO DI BRERA AT MERATE, ITALY
PISCO is a speckle camera which belongs to Midi-Pyrnes Observatory (Toulouse,
France) and was used from 1993 to 1998 with the 2-meter Bernard Lyot telescope
of the Pic du Midi Observatory (France). Due to a change of policy of the time-
allocation committee, it was no longer used after 1998 for regular observations
of visual binaries. A group of European astronomers involved in the study of
binary stars (from Belgium, Bulgaria, France, Italy, and Poland) were very
disappointed by such a situation and decided to look for a new host telescope on
which PISCO could be mounted and operated at regular times throughout the year.
In 2000 they investigated the possibility of using PISCO with the 2-meter
telescope of the National Astronomical Observatory of the Bulgarian Academy of
Sciences at Rozhen (Bulgaria). This project failed because of technical problems.
In the summer of 2003, M. Scardia proposed to install this instrument on the
1-meter Zeiss telescope in Merate. In November 2003, PISCO and the intensified
CCD camera of Nice University (France) were successfully installed at the
Cassegrain focus of the Zeiss telescope under the supervision of J.L. Prieur and
L. Koechlin, with the help of the OAB technical staff, during a memorable week
of pouring rain! After a few weeks of tests performed by M. Scardia, PISCO became
fully operational in January 2004. The subsequent observations have already
confirmed the possibility of observing visual binaries with separations down to
0".14 and with luminosity differences up to 4 magnitudes between the components.
Scardia M., Prieur J.-L., Koechlin L., Aristidi E., Lampens P., Strigachev A.,
Oblak E., Kurpinska-Winiarska M., Ghigo M., Mazzoleni F., and Sala M..
NOTES
* Errata in Information Circular No. 152
- In the entry for WDS 22344+2623 (COU 540), the value of omega should be
162.5, not 13.5.
* Others papers on double stars published in 2003
- ALZNER, A.: "Micrometric measures of double stars from 1998.02 to 2002.92".
The Webb Soc. Double Star Section Cir. 11, 10 (2003).
- DOMMANGET, J.: "The Mass/Eccentricity Limit in Double Star Astronomy".
Journal of Astrophysics & Astronomy 24, 99 (2003)
- TOBAL, T. & PLANAS, J.: "OAG General Catalogue of 10.000 Measurements of
Visual Double Stars (1970-2003 / J2000,0)". Garraf Astronomical Observatory
(Barcelona-Spain). December 2003
***********************************************************************
The deadline for contributions to Information Circular No. 154 is:
October 15th 2004
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Tel: +34 981592747
Fax: +34 981597054
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
http://www.usc.es/astro
ISSN: 1024-7769
INTERNATIONAL ASTRONOMICAL UNION COMMISSION 26 (DOUBLE STARS)
INFORMATION CIRCULAR No. 154 (OCTOBER 2004)
NEW ORBITS
ADS Name P (yr) T e W(2000) 2004 Author
RA 2000 DEC n (deg) a (") i (deg) w (deg) Last ob. 2005
---------------------------------------------------------------------------------------
WRH 28 24.04 2000.41 0.429 172.9 182.3 0.174 OLEVIC &
00416+2438 14.9738 0.180 63.9 262.4 1988.8982 188.5 0.177 CVETKOVIC
1530 A 2407 183.87 1971.43 0.072 172.8 301.2 0.522 OLEVIC &
01554+0257 1.9579 0.689 46.0 45.3 1991.75 303.6 0.530 CVETKOVIC
3767 HU 33 143.39 1961.11 0.785 90.6 346.8 0.143 ANDRADE
05117+0031 2.5106 0.121 137.7 295.5 1998.775 346.0 0.145
8831 FIN 297 AB 62.87 2031.46 0.840 87.4 348.1 0.246 MANTE
13145-2417 5.7264 0.195 46.7 79.9 2000.441 349.4 0.244
8884 A 2489 675. 1923.1 0.71 6.4 191.2 0.855 ALZNER
13237-0043 0.5333 0.98 103.9 30.2 2002.36 191.1 0.863
CHR 43 97.69 2078.87 0.517 62.8 227.2 0.405 OLEVIC &
15031+4439 3.6849 0.430 71.8 358.0 1995.3109 228.3 0.424 CVETKOVIC
12469 SCJ 22 165.27 1983.89 0.573 172.7 268.1 0.816 DOCOBO
19282-1209 2.1783 1.003 18.5 342.9 2004.733 270.6 0.840 & LING
15431 COU 432 BC 60.08 2016.29 0.021 6.5 188.9 0.188 MANTE
21543+1943 5.9923 0.192 104.4 246.4 1997.716 187.4 0.190
15902 BU 172 AB 147.26 1987.72 0.703 104.0 51.3 0.349 DOCOBO
22241-0450 2.4447 0.411 163.8 287.2 2004.721 49.1 0.361 & LING
16457 A 194 114.44 1964.25 0.118 107.4 287.2 0.216 DOCOBO
23020+4800 3.1458 0.201 95.4 47.4 1996.5404 286.9 0.216
16904 A 643 Aa-B 324.38 1926.27 0.115 30.5 140.3 0.226 OLEVIC &
23393+4543 1.1098 0.261 147.5 152.6 1999.7282 139.0 0.226 CVETKOVIC
16951 A 1242 441.18 2220.74 0.404 9.2 335.0 0.930 LING
23431+1150 0.8160 0.964 62.0 123.2 2002.750 335.4 0.935
Errata in Information Circular No. 144
In the entry for WDS 07043-0303 (A 519), the value of periastron epoch T should be
2015.54, not 2019.54.
***********************************************************************
The deadline for contributions to Information Circular No. 155 is:
February 15th 2005
J. A. Docobo (oadoco@usc.es)
J. F. Ling (oafana@usc.es)
Tel: +34 981592747
Fax: +34 981597054
Observatorio Astronomico "R. M. Aller"
P. O. Box 197
Universidade de Santiago de Compostela
SPAIN
http://www.usc.es/astro
ISSN: 1024-7769