COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1725

                                 Konkoly Observatory
                                 Budapest
                                 1980 January 9


              NEW FLARE STARS IN ORION


In our first note there were described 22 flare stars discovered in Orion [1].
This program was continued during the period of 22 Dec. 1970 - 19 Jan. 1972.
The observations were made on ORWO ZU-2 emulsion without filter. 48 plates
with five successive exposures on each one were obtained; the exposures varied
from 6m to 7m20s, so that the sum of exposures was equal to 33m20s.

Table I gives the coordinates, pg magnitudes at minimum, pg amplitudes, date of
the flares for 26 stars and identification with Tonantzintla Catalogue [2]
(noted with H), or that of Rosino and Pigatto (noted with R) [3].

Table I also gives new data of star No. 19 from [1], which was erroneously
identified.

Only one from these stars (No. 43 in Table I) is a slow flare, the brightness
of which increased more than for 40 minutes.

Table I

No  alpha_1900    delta_1900   magn.   Delta m_pg   date         ident.
                                                                 H     R
19   5h 29m 41s    -4d 23.5'  (20.5m)    4.7m       06.01.1970
23      34  20     -7  04.5    17.9      2.8        22.12       184
24      26  33     -4  29.4    17.5      0.7        22.12
25      30  49     -4  22.5    16.9      1.5        22.12
26      35  19     -7  13.1   (18.7)     2.8        22.12
27      31  55     -6  12.1    18.1      1.8        23.12
28      32  29     -5  47.0    17.4      0.8        23.12
29      29  12     -3  13.5    17.0      0.5        23.12
30      39  07     -5  39.4    16.6      0.7        23.12
31      37  42     -6  43.3    17.1      0.9        29.12
32      29  47     -6  11.2    17.4      1.5        29.12
33      31  57     -5  12.3    16.7      1.9        29.12       101
34      30  31     -6  05.7    17.7      1.3        30.12       157   17
35      30  38     -6  02.5    17.0      2.5        30.12
36      26  07     -5  46.7    17.2      1.0        30.12
37      30  39     -7  14.2   (22.0)     5.1        30.12
38      30  27     -4  26.0   (17.9)     1.3        30.12
39      30  30     -6  05.4    16.9      2.4        09.12.1971
40      23  02     -5  04.5   (19.8)     3.7        09.12
41      29  47     -5  50.2    18.0      3.2        17.12
42      29  13     -5  05.8    17.5      2.1        17.12
43      28  17     -4  55.8    17.2      2.0        17.12
44      28  33     -5  09.0   (19.6)     3.8        17.12
45      29  54     -5  50.5    16.6      2.7        10.01.1972  218
46      28  47     -4  59.9    18.3      2.5        19.01
47      30  39     -5  55.0    16.2      1.0        19.01
48      23  59     -4  46.7    17.1      2.2        19.01             56

The details of observations will be published later.


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

References:

1. Kiladze, R.I., 1972, I.B.V.S. No. 670
2. Haro, G., Chavira, E., 1969, Bol. Obs. Tonantzintla y Tacubaya 5, No. 32. 59 [BIBCODE 1969BOTT....5...59H ]
3. Rosino, L., Pigatto, L., 1969. Contr. Asiago. Obs., No. 231