The Monitor Project: a search for low mass EBs in the young open cluster M50

Details The Monitor Project: a search for low mass EBs in the young open cluster M50 The Monitor Project: a search for low mass EBs in the young open cluster M50

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1094..832b&link_type=abstract

COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun.

Physics

Low Luminosity Stars, Subdwarfs, And Brown Dwarfs, Binary And Multiple Stars, Stellar Rotation

Scientific paper

We present preliminary results from a high-cadence photometric monitoring survey of the 130 Myr old open cluster M50. Using the semi-automated occultation detection process developed by Miller et al. [1], we uncovered eight low mass (<1 Msolar) eclipsing binary candidates in the cluster. Preliminary analysis of spectroscopic follow-up on five of these candidates confirms their binary nature. One candidate also exhibits a systemic velocity broadly consistent with the cluster radial velocity, indicating cluster membership. Confirmation of these eight candidates as true members of the M50 cluster will allow us to provide important constraints to the mass-radius relationship for objects below 1Msolar at ages younger than 1 Gyr, where current observations remain scarce.

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