NOAO >   Observing Info >   Approved Programs >   2013B-0503

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Proposal Information for 2013B-0503


PI: Yilen Gomez Maqueo Chew, Vanderbilt University, yilen.gomez@vanderbilt.edu
Address: Physics Department, 6301 Stevenson Center Lane, Nashville, TN 37235, USA

CoI: Leslie Hebb, Vanderbilt University
CoI: Francesca Faedi, University of Warwick
CoI: Katie M. Keating, Rincon Research Corporation
CoI: Keivan Stassun, Vanderbilt University
CoI: Don Pollacco, University of Warwick
CoI: Florian Rodler, Institut de Ciencies de l'Espai (ICE)
CoI: Andrew Collier Cameron, University of St Andrews

Title: Calibrating the Mass-Radius-Temperature Relation in the Low-Mass Regime

Abstract: We request a total of 9 nights with FLAMINGOS at the KPNO 2.1m to obtain the J and Ks-band light curves of low-mass M dwarfs in eclipsing binaries with F/G/K primaries. This is part of a larger effort to constrain the mass-radius-temperature relation as a function of activity and metallicity at the bottom of the main sequence with unprecedented large number statistics. With these observations, we will determine the temperature of the M dwarfs by comparing the secondary eclipse depth with the primary temperature as measured from spectral synthesis. The measurement of the secondary eclipse is only possible in the near- infrared, where the M dwarfs are brighter. To achieve precise measurements, the observations require a temporal coverage of the secondary minimum, and part of the out-of-eclipse phases. The comprehensive modeling of the binaries, including radial velocity and multi-band light curves, will allow us to fully determine their fundamental properties, including masses, radii and temperatures.


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