Каталог спекральных абсолютных величин 766 звёзд спектральных типов B и A B 44-х площадях каптейна, расположенных вдоль галактического пояса (|b|<30°) / Catalogue of absolute spectral magnitudes of 766 B and A stars in 44 Kapteyn Areas situated along the galactic belt (|b|<30°)

Bartaya, R.A. and ბართაია, რ. and Бартая, Р.А. (1958) Каталог спекральных абсолютных величин 766 звёзд спектральных типов B и A B 44-х площадях каптейна, расположенных вдоль галактического пояса (|b|<30°) / Catalogue of absolute spectral magnitudes of 766 B and A stars in 44 Kapteyn Areas situated along the galactic belt (|b|<30°). აბასთუმნის ასტროფიზიკური ობსერვატორიის ბიულეტენი / Bulletin of the Abastumani Astrophysical Observatory (22). pp. 25-43.

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Abstract

In the 1948—1955 systematic determinations of absolute spectral magnitudes of B and A stars were performed at the Abastumani astrophysical observatory [1, 2]. The present paper gives these magnitudes for 766 stars of mentioned types in 44 Kapteyn Areas (table I) situated along the galactic belt: b< ±30° (table III). The observational material was secured using 15.°5 objective prism mounted 011 20 cm camera of the Abastumani 40 cm refractor. Linear dispersion of the obtained spectrum is 115 A/mm near Hδ. Total absorptions in Balmer hydrogen lines (Hγ, Hδ, Hε) served as absolute magnitude criterium. Measurements were made with wide slit in microphotometer that cut out a band 18 A wide in average from the measured region. We exclude the effect of the Balmer lines intensity dependence upon the spectral type [1]. Stars with known trigonometric and spectral parallaxes have served as standard stars to draw the reduction curves. The probable error of the absolute value determination is p= ±0.m10. January, 1956.

Item Type: Article
Subjects: Q Science > QB Astronomy
Divisions: Institutes > Evgeny Kharadze Abastumani National Astrophysical Observatory
Depositing User: თამარ ჭაღიაშვილი
Date Deposited: 30 May 2018 07:21
Last Modified: 30 May 2018 07:21
URI: http://eprints.iliauni.edu.ge/id/eprint/8040

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