Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26as...49...61b&link_type=abstract
Astronomy and Astrophysics Supplement Series, vol. 49, July 1982, p. 61-67. Research supported by the Swiss National Science Fo
Astronomy and Astrophysics
Astrophysics
15
Galactic Nuclei, Galactic Structure, Milky Way Galaxy, Stellar Spectrophotometry, Astronomical Coordinates, Giant Stars, Interstellar Extinction, Late Stars, Main Sequence Stars, Stellar Luminosity
Scientific paper
Photometric observations of 1235 stars have been made in the RGU system covering an area of 0.19 square degrees with center coordinates l equals 9.3 deg and b equals +12.1 deg, down to the limiting magnitude 17.9. Two-color diagrams are used for the identification of the late-type giants of population I, late-type giants at the right side of the main sequence, and metal-poor main sequence stars, and to determine the interstellar reddening. Density functions are calculated for both types of late-type giants, for main sequence stars of the disk population and partly also for metal-poor main sequence stars. The luminosity functions for main sequence stars of population I are determined for the two distance intervals 0.5-1.0 kpc and 1.0-1.5 kpc and compared with the corresponding function for the solar neighborhood
Becker Walter
Fang Ch.
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