COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1726

                                Konkoly Observatory
                                Budapest
                                1980 January 9


                FLARE STARS IN ORION


In order to discover flare stars in the Orion nebula region photographic
observations were made with the Abastumani Astrophysical Observatory 28"
Meniscus-type (pg) and the Byurakan Astrophysical Observatory 40" Schmidt (U)
telescopes by means of the multiple exposure method. 14 flare events have been
found. Four of them are repeated flares of stars listed in [1].

Out of all flares registered 13 are fast flares and No. 49 is a slow one, the
brightness of which had increased for more than 30 minutes.

Table I gives the data of these flares. We are continuing the numeration of
flares detected at Abastumani [2,3] in the Orion aggregate.

Table I

No  alpha_1900    delta_1900      m_min        Delta m    Date Telesc. Ident.
                                 pg     U      pg     U
49   5h 30m 31s    -5d 00.0'    17.0m         4.2m        04.02.1978 28"
50      30  33     -6  51.9     14.7          1.1         10.10      28"
51      27  15     -5  00.0     19.3          4.2         11.10      28"
52      23  05     -5  45.5     18.0          0.8         25.11      28"
53      27  18     -7  07.6     15.8   18.0   1.7    4.6  25.11   40"28" 187
54      37  08     -5  14.2     21.0  >21.0         >7.0  29.11      40"
55      27  53     -5  44.0     17.2          1.5         27.12      28" 191
56      22  14     -6  28.7     19.2          3.4         28.01.1979 28"
57      27  51     -6  41.0     18.7          2.2         28.01      28"
58      28  28     -5  36.8     15.6          2.3         28.01      28" 194
59      28  28     -5  36.8     15.6   17.8          2.1  29.01      40" 194
60      31  39     -3  47.5     18.3   19.0          3.5  29.01      40"
61      31  28     -4  32.9     16.2          0.7         19.03      28"
62      32  50     -5  33.1     18.7          3.2         19.03      28"


R.SH. NATSVLISHVILI
Abastumani Astrophysical Observatory,
Georgia, U.S.S.R.

N.D. MELIKIAN
Byurakan Astrophysical Observatory,
Armenia, U.S.S.R.

References:

1. Haro, G., Chavira, E., 1969, Bol. Obs. Tonantzintla y Tacubaya 5, No. 32, 59 [BIBCODE 1969BOTT....5...59H ]
2. Kiladze, R.I., 1972, I.B.V.S., No. 670
3. Kiladze, R.I., Natsvlishvili, R. Sh. 1979, I.B.V.S. No. 1725