Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69..705s&link_type=abstract
Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 69, no. 4, p. 705-730.
Astronomy and Astrophysics
Astronomy
6
Astronomical Catalogs, Main Sequence Stars, Star Clusters, Star Distribution, Ubv Spectra, Astronomical Photometry, Dwarf Stars, Star Formation, Stellar Luminosity
Scientific paper
A catalog of UBVRI-prime photometric data for 167 stars of 5.7-15 m V projected onto the L 1642 dark cloud in the zone -6 deg 05 arcmin to -7 deg 00 arcmin is presented. The photometric catalog was made using the Mt. Maidanak 60-cm reflector with a pulse-counting photometer during 1978-1990. Eighty-three cluster members were selected from neighboring stars. The selection method is described. Most B3-B9 stars are found to lie on the premain sequence. The stars with enhanced luminosity are mainly K0-K7, the majority being variable and emission objects. No dependence of the stars' peculiarities (IR, UV excess, variability, and line emission) on spectral type is found, which is interpreted as the absence of sequential evolution in the cluster.
Shevchenko Sergey. V.
Yakubov S. D.
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