NOAO >   Observing Info >   Approved Programs >   2013A-0433

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Proposal Information for 2013A-0433


PI: Angelle Tanner, Mississippi State University, angelle.tanner@gmail.com
Address: Physics Department, Hilbun Hall, MSU, MS 39762, USA

CoI: Peter Plavchan, NExScI
CoI: Todd Henry, GSU
CoI: Justin Cantrell, GSU

Title: Using Phoenix to Study the Planetary and Stellar Multiplicity of the Nearest M Dwarfs

Abstract: We propose a study to collect multiple epochs of KPNO 2.1-m Phoenix radial velocity (RV) measurements for a sample of nearby, low-mass stars. Our goal is to identify new very-low mass companions and to assess the planet search capability of Phoenix on this telescope. Our sample consists of 17 M dwarfs with: 1) astrometric perturbations signaling the presence of a low-mass stellar companion, 2) infrared excesses which could indicate the presence of a planetary system, or 3) newly determined high metallicities which correlate with planets around solar-type stars. With an anticipated 50 m/s RV precision and the number and spacing of the observations in our program’s design, we will be sensitive to 1.5 and 5 M_J giant planets with periods of 3 and 10 days as well as any stellar or brown dwarf companions. The observationally intensive nature of exoplanet RV surveys makes them ideal for smaller telescopes like the KPNO 2.1 meter especially if infrared spectrometers like Phoenix permit us to survey the mid-late type M dwarfs which have largely been omitted by optical RV programs.


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NOAO >   Observing Info >   Approved Programs >   2013A-0433

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