(updated 30 August 2021)
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Research Consortium on Nearby Stars (RECONS)

The RECONS astrometry program maps and characterize red and brown dwarfs within 25 pc.

This means for ~700 red stars, we take fresh astrometry and photometry every 2 months from CTIO.

For my PhD thesis I am identifying unresolved binaries from the astrometric data and characterizing their orbits.
I am primarily thinking about:
  • Which orbits tend to occur? Which orbits tend not to occur? What are the distributions of orbital parameters for M dwarf binaries?
  • What are the mass ratios of M dwarf binaries? Are mass ratios similar for long- and short-period systems?
  • Are there any differences in orbits of pairs with partially convective vs. fully convective interiors?
  • What can this tell us about the physics of star formation?
  • What can this tell us about where to look for planets?
Do you also think this sounds cool? Want to chat about binaries or astrometry? e-mail me!
My Research Life

cartoon of the CTIO 0.9m telescope
Astrometric orbits example This plot (and many more!) appears in Vrijmoet et al. (2020).

My first paper (Vrijmoet et al. 2020) compared RECONS astrometry to Gaia DR2 to define criteria for identifying unresolved binaries based on their astrometric fits.

I have also begun a 3-year speckle interferometry campaign at SOAR to map orbits of ~350 M dwarf multiples within 25 pc.
The sample was selected using the Vrijmoet+ 2020 DR2 critiera, augmented by binaries from RECONS astrometry and the literature.
My second paper (in prep, to submit late 2021) will present results of the first 1.5 years of this SOAR speckle campaign.


SMARTS 0.9m telescope at CTIO, where we take our data
      (and you could, too!)
Another useful list of links for the SMARTS 0.9m & 1.5m

My advisor and RECONS fearless leader: Todd J Henry

My honorary advisor and RECONS first mate: Wei-Chun Jao

REsources for RECONS