COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1887

                                    Konkoly Observatory
                                    Budapest
                                    1980 December 16

                                    HU ISSN 0374-0676



         FLARE STARS IN THE gamma CYGNI REGION



    Systematic observations of the region of gamma Cygni were continued. 
For flare star search a total of 87 plates in U-light
(ORWO ZU 21 + UG2 filter) and pg-light (ORWO ZU 21 without filter) 
centered on BD +40d4165 have been obtained with effective
time 85h50m between September 1979 and November 1980. The observations 
were carried out with the 40"/52" and 21"/21" Schmidt
telescopes of the Byurakan Astrophysical Observatory and 20"/28"
Schmidt telescope of the Bulgarian Astronomical Observatory at
Rojen.
   The number of plates, exposures and the effective time of
observations for each telescope are presented in Table I.


                  Table I
    Telescope   Light   Number of    Number of    T_eff
                          plates     exposures

     40"/52"      U         15          90         15h
     21"/21"      pg         1           5         50m
     20"/28"      U         68         402         67h
                  pg         3          18          3h


   Seven flare stars were discovered. The following data for the
observed flares are given in Table II: the serial number of the
flare stars, discovered on the Byurakan observational material
(B) and (R) - discovered on the Rojen observational material; coordinates 
for 1950.0; the approximate minimum brightness in U-light 
and the date of the flare up.

                  Table II
Number   RA (1950.0)   D (1950.0)     m_U min   Delta m_U    Date of flare up
B2       20h26m2         40d 06'       18m2       4m2          13.09.1980
R1          27.3         40  16        21.0       5.5          29.10.1980
R2          30.1         43  01        21.0       4.7          18.06.1980
B3          30.4         43  06        19.5       3.4          12.09.1980
R3          33.3         42  21        17.6       2.2          15.08.1980
R4          34.3         39  51       >21.0      >5.4          16.08.1980
R5          34.5         40  37       >21.0      >4.8          17.07.1980





                        KATYA P. TSVETKOVA

                     Department of Astronomy with
                   National Astronomical Observatory
                    Bulgarian Academy of Sciences
                    Sofia-1000, 7-th November Str.1
                           Bulgaria