COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS Number 2131 Konkoly Observatory Budapest 1982 April 28 HU ISSN 0374-0676 NEW FLARE STARS IN THE gamma CYGNI REGION This paper presents the results of systematic observations of the gamma Cygni region according to the programme of regular search for flare stars in different stellar aggregates. We obtained 123 plates with effective time 116^h between April and October 1981 with the 20in/28in Schmidt-telescope of the National Astronomical Observatory at Rojen. The multiple exposure plates were made on ORWO ZU21 emulsion through a Schott UG2 filter. Six new flare stars were discovered. Table I gives the data for flare stars: the serial number of the flare stars (we continue the designations of flare stars that was begun in our previous paper (Tsvetkova (1980)); coordinates for 1950.0; the approximate minimum brightness in U-light; the observed amplitude of flares in U-light and the date of the flare up. Table I -------------------------------------------------------------------- Number RA(1950.0) D(1950.0) m_U min m_U Date of flare up -------------------------------------------------------------------- R6 20h15.5m 42d28.0 19.6m 2.6m 19.9.1981 R7 23.6 41 54.9 18.0 1.0 27.8.1981 R8^x 24.6 40 18.5 18.3 3.3 3.8.1981 " " " " 2.1 20.9.1981 R9 25.4 41 32.1 20.0 3.8 3.6.1981 R10 25.6 41 9.4 17.5 2.3 31.7.1981 R11 33.8 41 1.0 17.8 1.0 29.8.1981 -------------------------------------------------------------------- x^ The flare star R8 has shown 2 flares, it is situated in the nebulosity IC 1318b. Taking into account of the known data on flare stars in the gamma Cygni region (Melikian et al. (1980), Tsvetkova (1980) and present paper) the lower limit of the total number of flare stars in this region according to Ambartsumian's formulae (Ambartsumian et al.(1970)) is equal to 98. KATYA P. TSVETKOVA Department of Astronomy with National Astronomical Observatory, Bulgarian Academy of Sciences Sofia-1184, Lenin Str. 72 Bulgaria References: Ambartsumian, V.A., Mirzoian, L.V., et al.: 1970, Astrofizika, 6, 7. [BIBCODE 1970Afz.....6....7A ] Melikian, N.D., et al.: 1980, I.B.V.S. No. 1750. Tsvetkova, K.P.: 1980, I.B.V.S. No. 1887.