The empirical mass-luminosity relation for low mass stars
نویسندگان
چکیده
منابع مشابه
Mass-luminosity relation of low mass stars
The data on dynamic masses and multicolor photometry of 56 M-type components of binary/multiple systems was collected. Critical evaluation of late type stars bolometric correction scales have been performed. Our refined and reduced data is comparedwith published empirical and theoreticalmassluminosity relations. Our data does not exclude the existence of a step-like feature at MV = 12m. The bes...
متن کاملAge–luminosity relations for low-mass metal-poor stars
We present a grid of evolutionary calculations for metal-poor low-mass stars for a variety of initial helium and metal abundances. The intention is mainly to provide a database for deriving directly stellar ages of halo and globular cluster stars for which basic stellar parameters are known, but the tracks can also be used for isochrone or luminosity function construction, since they extend to ...
متن کاملEmpirical Isochrones for Low Mass Stars in Nearby Young Associations
Absolute ages of young stars are important for many issues in pre-main sequence stellar and circumstellar evolution but are long recognized as difficult to derive and calibrate. In this paper, we use literature spectral types and photometry to construct empirical isochrones in HR diagrams for low-mass stars and brown dwarfs in the η Cha, ǫ Cha, and TW Hya Associations and the β Pic and Tuc-Hor ...
متن کاملThe Black Hole Mass - Spheroid Luminosity relation
The differing Mbh-L relations presented in McLure & Dunlop, Marconi & Hunt and Erwin et al. have been investigated. A number of issues have been identified and addressed in each of these studies, including but not limited to: the removal of a dependency on the Hubble constant; a correction for dust attenuation in the bulges of disc galaxies; the identification of lenticular galaxies previously ...
متن کاملAccurate masses of very low mass stars IV . Improved mass - luminosity relations ?
We present improved visual and near-infrared empirical mass-luminosity relations for very low mass stars (M<0.6 M). 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 programme, presented in a companion paper. As predicted by stellar structure models, the metallicity dispersi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2008
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-007-9729-8