Astronomy and Astrophysics – Astronomy
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105.1962w&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 105, no. 5, p. 1962-1966.
Astronomy and Astrophysics
Astronomy
38
Astronomical Photometry, Dwarf Stars, K Stars, M Stars, Ubv Spectra, Gallium Arsenides, Photomultiplier Tubes, Stellar Color
Scientific paper
An observational program using UBVRI photometry is presented for 688 stars from among the dwarf K and M stars already found spectroscopically by Vyssotsky (1958). Of these, 211 have not been observed photometrically. These observations were obtained over a period of several years at the Kitt Peak National Observatory using a GaAs photomultiplier with an 0.9 m reflector. Based on night-to-night variations in the measures of individual stars, the internal errors may be estimated to be roughly 0.01 mag for the colors and 0.015 for the V magnitudes. The photometric parallaxes reported for each star were computed in the manner discussed by Weis (1986).
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