NOAO >   Observing Info >   Approved Programs >   2013B-0304

Small NOAO Logo

Proposal Information for 2013B-0304


PI: Leslie Hebb, Vanderbilt University, leslie.hebb@vanderbilt.edu
Address: Department of Physics and Astronomy, 6301 Stevenson Center Lane, Nashville, TN 37235

CoI: Estelle Moraux, LAOG, Grenoble
CoI: Simon Hodgkin, Cambridge University
CoI: Suzanne Aigrain, Oxford University
CoI: Jerome Bouvier, LAOG, Grenoble
CoI: Jane Birkby, Leiden Observatory

Title: Mass measurements of a young eclipsing binaries in h and chi Per

Abstract: Pre-main sequence (PMS) eclipsing binaries (EBs) are rare, but they are essential for testing and calibrating stellar evolution models of young stars. Eclipsing binaries provide the most accurate measurements of fundamental stellar properties (mass, radius, temperature), but only ten PMS EBs are currently being used to constrain theoretical models. Our goal is to obtain radial velocity measurements of 8 newly identified, PMS EBs in the 13 Myr, h & (chi) Persei double cluster. The EBs were discovered through our intensive photometric monitoring of the cluster, as part of the Monitor Project. The proposed observations will result in the empirical mass measurements of about a dozen 13 Myr old stars with ages with the same metallicity and a range of masses. When combined with follow up photometry, these observations will be used to place detailed constraints on pre-main sequence stellar evolutionary models. This project complements existing efforts by our team and others to measure masses and radii of young eclipsing stars in clusters with ages of 1-2 Myr (Orion) and 5 Myr (NGC 2264).


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013B-0304

noaoprop-help@noao.edu

Small NOAO Logo