Eliot Halley Vrijmoet    VRY-MOOT

Graduate Student, PhD Candidate
SMARTS Graduate Fellow for the CTIO 0.9m Telescope

Department of Physics and Astronomy
Georgia State University
Atlanta, GA 30303
Comet Halley
Image: Altered from NASA/W. Liller
Office: 1 Park Place 713
(inside 1 Park Place 700)
E-mail: vrijmoet@astro.gsu.edu        @eliotVRIJ

Curriculum Vitae (updated 9 June 2021)

B.A. Physics - Reed College - 2013
More about me

Research Consortium on Nearby Stars (RECONS)

The goal: As CTIOPI, we map and characterize red and brown dwarfs within 25 pc.

The work: For a list of ~700 red stars, we take fresh astrometry and photometry every couple months from CTIO.

The result: For many systems we have astrometry spanning 20 years!

What I do with these stars: I identify the unresolved binary systems and characterize their orbits. Some questions on my mind lately:
  • What are the mass ratios of red dwarf binaries?
  • Which orbits tend to occur? Which orbits tend not to occur?
  • What can this tell us about where to look for planets?
My Research Life

CTIO 0.9m
Astrometric orbits example 1

But what about Gaia? Gaia is great! But it's even greater with the added context of multi-year astrometry, because currently (DR2) it has only ~2 years of data. My paper about this appears in AJ (23 Oct 2020) --- read it here!

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

This plot (and many more!) appears in Vrijmoet et al. (2020).


It is currently my great honor to be president of AstroPAL (Astronomy Peer Advising Leaders), a peer-led mentorship program for GSU astronomy grad students.

AstroPAL pairs first- and second-year grads with senior grad mentors to help them navigate the grad school experience. Mentees have monthly one-on-one meetings with their mentors, and mentors are given training on conflict management and campus resources from GSU as well as senior AstroPALs.

AstroPAL also acts as conduit between the grads and the faculty, helping these groups communicate with each other as needed. This is especially useful for the new grads that are typically somewhat intimidated at the prospect of speaking to faculty on their own.

We have found AstroPAL to be very helpful for building a supportive community among the GSU astro grads and astro department as a whole!

Additional Life Resources

Eliot Halley and the Moon
Image credit: Bokyoung Kim

Teaching Astronomy Labs

I'm not teaching this term! :)
(updated summer 2021)

Previous Sections

Spring 2020

Fall 2019

Summer 2019

Spring 2019

Fall 2018

Summer 2018

Spring 2018

Fall 2017

Summer 2017

Spring 2017

Fall 2016
ASTR 1020 T 2:00-3:50 p.m.

ASTR 1020 M 2:00-3:50 p.m.


ASTR 1020 Tu 10:00-11:50 a.m.
ASTR 1020 Th 10:00-11:50 a.m.

ASTR 1010 Tu 12:00-1:50 p.m.
ASTR 1010 W 8:00-9:50 a.m.


ASTR 1010 Tu 5:00-6:50 p.m.
ASTR 1010 W 3:00-4:50 p.m.

ASTR 1020 M 1:30-3:20 p.m.
ASTR 1020 W 1:30-3:20 p.m.

ASTR 1010 MW 7:40-9:30 p.m.

ASTR 1010 M 3:00-4:50 p.m.
ASTR 1010 Th 1:00-2:50 p.m.
ASTR 1010 F 8:00-9:50 a.m.

ASTR 1020 Tu 7:00-8:50 p.m.
ASTR 1020 F 8:00-9:50 a.m.
GSU ASTR 1010/1020 Lab website Hard Labor Creek Observatory (HLCO)
Georgia Tech Observatory
Fernbank Science Center Observatory

REsources for RECONS