COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                    Number 2224

                                 Konkoly Observatory
                                 Budapest
                                 1982 November 8

                                 HU ISSN 0374-0676


            FLARE STARS IN THE PLEIADES


  Photographic monitoring observations in the Pleiades region
have been continued at the Bulgarian National Astronomical 
Observatory.
  The observations were made with the 20"/28" Schmidt telescope
at Rojen during 1979 - 1981.
  Table I gives the characteristic data of the observational
material. The total effective time of observations amounts to
53h20m.
                          Table I

Telescope Light      Time of   Number of    Number of    Teff
                         exposures     plates        exposures

   20"/28"     U         10min          30             163        27h10m
       "        Pg       10min          26             156       26   10
                                                           Total = 53h20m


The data of observed flares are summarized in Table II.

                            Table II

Rojen N   HII   R.A1900.0   D1900.0   mu/pg    mu/pg   Date        Identification
                                                        min 

R 12x     134   3h37.7m    23deg55'   17.0u    0.5m_u   14.10.80     T 68
R 12      "        "          "          "     1.7m_u   29.11.81       "
R 13      -     3h37.9m    25deg09'   18.6u    2.6m_u   23.11.81     T 69
R 14x     335   3h38.4m    23deg45'   16.0u    0.6m_u   17.10.81     T 73
R 15      -     3h41.6m    22deg04'   16.8u    2.6m_u   30.10.81     B 473
R 16      -     3h43.0m    24deg02'   17.7pg   1.7m_pg  22.09.79     B 476
R 17      -     3h43.6m    23deg37'   19.2pg   4.5m_pg  24.09.79     T 54
R 18      -     3h44.0m    21deg54'   18.8pg   3.3m_pg  17.09.79       -
                                     
x Flares were discovered after the reexamination of the observational
material published in our previous papers (IBVS No. 1749, IBVS
No. 1888).



  The successive columns give the following data:
1.Rojen designation. The numeration according M. Tsvetkov et
  al. (I.B.V.S, No. 1888) has been continued.
2. Hertzsprung number.
3-4. Coordinates for 1900.0.
5-6. Photographic magnitude at minimum and amplitude of the
    observed flare either in U- or pg- light.
7. Date of the flare event (U.T.).
8.Identification of the flare stars by the Tonantzintla (T) and
  the Byurakan (B) lists.





               M.K. TSVETKOV
               KATYA P. TSVETKOVA
               ASSYA G. TSVETKOVA
               S.A. TSVETKOV
         Department of Astronomy with
         National Astronomical Observatory,
         Bulgarian Academy of Sciences,
         Sofia-1000, 7th November str. 1
         Bulgaria


               H.S. CHAVUSHIAN
         Byurakan Astrophysical
         Observatory
         Byurakan, Armenia
         U.S.S.R.