Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...230..786e&link_type=abstract
Astrophysical Journal, Part 1, vol. 230, June 15, 1979, p. 786-801.
Astronomy and Astrophysics
Astrophysics
28
Astronomical Catalogs, Stellar Luminosity, Stellar Motions, Subdwarf Stars, Calibrating, Disks (Shapes), Halos, Infrared Spectra, Luminous Intensity, Radial Velocity, Stellar Mass, Stellar Spectrophotometry
Scientific paper
The luminosities and motions of stars brighter than visual magnitude 15 and annual proper motion greater than one arcsec given in a catalog published by the author (1979) are discussed on the basis of the (RI) photometry available for these objects. Pending subsequent discussions of data contained in two additional catalogs, it is concluded that the first catalog contains 100 subdwarfs extending to an infrared magnitude of +11.5 mag. If these are halo objects, the number density-luminosity function has a steeper slope than the general luminosity function, indicating that the mass density may be greater than normally recognized. The luminosity law for the old disk stars in this catalog closely conforms to the slope of the general luminosity function from visual magnitude +4.5 to +13; however, there is an excess of stars of lower luminosity.
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