Фотоэлектрические наблюдения P Cygni / Photoelectic Observation of P Cygni

Никонов, В.Б. and Nikonov, V.B. (1937) Фотоэлектрические наблюдения P Cygni / Photoelectic Observation of P Cygni. აბასთუმნის ასტროფიზიკური ობსერვატორიის ბიულეტენი / Bulletin of the Abastumani Astrophysical Observatory (1). pp. 35-38.

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Abstract

The photoelectric photometer produced by Messrs. Günther & Tegetmeyer - an exact replica of the Guthnick four-cell photoelectric photometer - and mounted in the Nasmith focus of the 13-inch reflector of the Abastumani Observatory was used for observations of P Cygni. Observations were conducted with the aid of potassium hydride photoelectric cell, the masimum spectral sensitivity of which lied at λ =435 mμ. As a comparison star HD193369 (BD+36°3992); 5^m.52; A0 was used. Each complete set of observations consisted of 20 determinations of the speed of the electrometer thread in the following order: P Cyg(5) - HD193369(5)-HD193369(5)-P Cyg(5). The results of the photoelectric observations of the brightness of P Cygni, covering the period form September 11 to October 8, 1935 are listed in Table I and presented graphically in Fig. 1. An examination of the results obtained confirms the fluctuation in the brightness of P Cygni, the value of which, during our observations, attained 0^m.15 approximately. April, 1936

Item Type: Article
Subjects: Q Science > QB Astronomy
Divisions: Institutes > Evgeny Kharadze Abastumani National Astrophysical Observatory
Depositing User: თამარ ჭაღიაშვილი
Date Deposited: 18 May 2018 11:10
Last Modified: 02 Jun 2018 18:15
URI: http://eprints.iliauni.edu.ge/id/eprint/7972

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