COMMISSIONS 27 AND 42 OF THE IAU
              INFORMATION BULLETIN ON VARIABLE STARS
                           Number 4046

                                                 Konkoly Observatory
                                                 Budapest
                                                 7 July 1994

                                                 HU ISSN 0374 - 0676


         NEW FLARE STARS IN THE CYGNUS T1 ASSOCIATION REGION


  Seven flare stars were found during the examination of the photographic material of the
Cygnus association region. Observations were carried out on the 26" Schmidt telescope
of Tonantzintla Observatory (INAOE) during 1974-1982. Total observational time was
about 88h.
  In Table 1 data on new flare stars are given. In the first column we continue the
Tonantzintla numbering of the Cygnus flare stars (Haro & Chavira, 1973). Columns
second to sixth give the approximate coordinates (error in R.A. +/- 5s in Dec. +/- 9"),
ultraviolet magnitude at minimum, flare amplitude, date of flare respectively.


                           [FIGURE 1]

 Figure 1. Identification charts for the new flare stars. North is at
 the top, East is to the right. The size of the chart is 12 x 12 arcmin.


                    Table 1
New flare stars in the Cygnus T1 association region
No. Ton   R.A.       Dec.       U      DeltaU    Date
          1950       1950      mag       mag    of flare
          h  m       d  '  
8         20 46.8    45 36.0   >18      >3.5   12.10.1974
9         20 53.1    42 47.4   ~18      ~3.5   09.07.1978
10        20 53.2    42 53.1    16.4     0.8   25.07.1976
11        20 53.4    43 11.0    17.6     2.8   20.08.1974
12        20 56.0    43 39.2  >=18     >=4.0   07.09.1977
13        20 59.1    42 46.8    17.4     3.7   01.09.1978
14        21 05.3    42 13.5    15.9     1.7   24.08.1974

In Figure 1 the identification maps of newly found flare stars are given.
We thank C. Escamilla for technical help.


                         Elma S. PARSAMIAN
                         Byurakan Observatory, Armenia
                         INAOE, Mexico

                         Enrique CHAVIRA
                         Graciela GONZALEZ
                         INAOE, Mexico

Reference:
Haro, G., and Chavira, E., 1973, Bol. Inst. Tonantzintla, 1 [BIBCODE 1973BITon...1...17H ]