Luminosities of FBS late type M stars |
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| Authors: | H V Abrahamyan |
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| Institution: | (1) V. A. Ambartsumyan Byurakan Astrophysical Observatory, Armenia;(2) N-Vision Optics LLC, Burlington, MA, USA |
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| Abstract: | A catalog of 995 C and late M type stars is compiled from the First Byurakan Survey of the sky (FBS). The question of effectively
separating giants and dwarfs among the stars of spectral class M is examined using data from this catalog, the 2MASS survey,
and a number of other catalogs. This has made it possible to determine the luminosity class of 846 class M stars from the
FBS survey. In the sample of FBS late M stars, 187 are dwarfs and 659 are giants. The sample of FBS late M stars is compared
statistically with the set of known samples of type M stars. The subsample of FBS M-giants is proved to be similar to Stephenson’s
standard sample of M-giants. A detailed statistical analysis of these two samples is carried out.
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Translated from Astrofizika, Vol. 50, No. 4, pp. 589–602 (November 2007). |
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| Keywords: | stars late-type luminosity |
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