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Kevanishvili, G.T. and ქევანიშვილი, გ. and Кеванишвили, Г.Т. (1969) On the question of the aggregations of the A type stars investigated by the monte-carlo method / A –სპექტრული კლასის ვარსკვლავთ შეჯგუფებების საკითხის გამოკვლევა შემთხვევითი ცდების მეთოდის (მონტე–კარლოს მეთოდი) გამოყენებით / Исследование вопроса о сгущениях звёзд спектрального класса AC променением метода спухиных испытаний (метод монте-карло). აბასთუმნის ასტროფიზიკური ობსერვატორიის ბიულეტენი / Bulletin of the Abastumani Astrophysical Observatory (37). pp. 117-140.
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Abstract
The distribution of about 55,00 A-stars of HD Catalogue has been investigated. In a number of cases they turned out to form real condensations. This conclusion is supported by application of the method of random tests (the Monte-Carlo method) and the Poisson's formula. The condensations are mostly distributed near the galactic plane. Their angular diameters vary from 2° to 6°; mean dimensions and densities are of the order of those for 0 and T associations. Among 21 condensations fixed by us three are denser and have comparatively sharp outlines. The condensations contain mainly A0-A2 stars. B8-B9 stars are founded rarely. The mean values of radial velocities of stars in Cyg and Lac condensations differ from those of the background stars. Consequently, the condensations of the A-stars in Cyg and Lac, fixed y us may be considered as actually expanding ones.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QB Astronomy |
| Divisions: | Institutes > Evgeny Kharadze Abastumani National Astrophysical Observatory |
| Depositing User: | თამარ ჭაღიაშვილი |
| Date Deposited: | 24 Jul 2018 09:55 |
| Last Modified: | 24 Jul 2018 09:55 |
| URI: | http://eprints.iliauni.edu.ge/id/eprint/8358 |
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