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2007MNRAS.381.1067R - Mon. Not. R. Astron. Soc., 381, 1067-1076 (2007/November-1)
Optical spectroscopic classification and membership of young M dwarfs in star-forming regions.
RIDDICK F.C., ROCHE P.F. and LUCAS P.W.
Abstract (from CDS):
Confirmation of candidate young stars and brown dwarfs as bona fide cluster members may be accomplished with moderate resolution spectra in the optical region by an analysis of the strength of the gravity-sensitive Na doublet. It has been established that this feature is much weaker in these very young objects than in field dwarfs. A sodium spectral index is used to estimate the surface gravity and to demonstrate quantitatively the difference between young (1-2Myr) objects, and dwarf and giant field stars.
Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS
Journal keyword(s): stars: formation - Hertzsprung-Russell (HR) diagram - stars: low-mass, brown dwarfs - stars: pre-main-sequence
Simbad objects: 35
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