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The Stellar Structure of the Orion Spiral ARM in Selected Directions. I. The Galactic Anticenter

Published online by Cambridge University Press:  12 April 2016

Teimuraz M. Kvernadze
Teimuraz M. Kvernadze*
Affiliation:
Abastumani Astrophysical Observatory, 383762 Abastumani, Republic of Georgia

Extract

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To investigate the spatial distribution of various stellar groups in the Hertzsprung-Russell diagram, it is necessary to have homogeneous observational data of MK spectral classification and photometry. This enables us to perform some statistical analyses with sufficient accuracy.

This paper reports BV photographic photometry of about 700 stars complete to mV = 12, in the direction of galactic anticenter with (l,b) = (169°, −12.4°), (178°, −2.4°), (184°, 8.9°). For the MK spectral data we used the catalogue by Bartaya and Kharadze (1992), which contains spectral and luminosity classes of 6042 stars in Kapteyn Areas Nos. 44–67. The observational data for this catalogue were obtained using the Abastumani Astrophysical Observatory 70 cm meniscus telescope and an 8°objective prism with dispersion 166 Åmm−1 near Hγ. The errors in classification are equal to ± 0.6 spectral subclasses and ± 0.5 luminosity classes, with a limiting magnitude of mV = 12.5.

Type
X. Stellar Astronomy
Information
International Astronomical Union Colloquium , Volume 148: The Future Utilisation of Schmidt Telescopes , 1995 , pp. 384 - 387
Copyright
Copyright © Astronomical Society of the Pacific 1995

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