Mass-luminosity relation of very low mass stars

Details Mass-luminosity relation of very low mass stars Mass-luminosity relation of very low mass stars

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sf2a.conf...67s&link_type=abstract

Abstracts from SF2A-2001: Semaine de l'Astrophysique Francaise, meeting held in Lyon, France, May 28-June 1st, 2001, Eds.: F. Co

Physics

Optics

Scientific paper

The mass of a star is arguably its most basic characteristic, since most stellar properties have a very steep mass dependency. We present much improved visual and near-infrared empirical mass-luminosity relations for very low mass stars. These relations make use of all stellar masses in this range known with better than 10% accuracy, most of which are new determinations with 0.2 to 5% accuracy from our own observations. They combine high accuracy radial velocity measurements from ELODIE (at the 1.93-m OHP telescope), adaptive optics imaging from PUE'O (at the 3.6-m CFH telescope) and infrared interferometric measurements. The agreement of the observed infrared mass-luminosity relations with the theoretical relations of Baraffe et al. (1998) and Siess et al. (2000) is impressive, while we find an increasingly significant discrepancy in the V band for decreasing masses.

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