COMMISSION 27 OF THE I. A. U.
          INFORMATION BULLETIN ON VARIABLE STARS
                      Number 3030


                                      Konkoly Observatory
                                      Budapest
                                      5 June, 1987

                                      HU ISSN 0374-0676


    SIX NEW VARIABLE STARS IN THE CONSTELLATION OF SAGITTARIUS

   The central regions of the Milky Way, in the direction of
Sagittarius and Scorpius (Right Ascension between 16 h to 19 h and
declination from -20 to -40 degrees) constitute a region with large
probabilities of finding new variables or nova-like very faint type
stars.
   Therefore, a systematic search program of such objects was
started two years ago. For its development two hundred photographic
plates of this region were available. Such plates were obtained
starting in 1942 and were obtained in 103aO emulsions with exposures
times of 60 min and utilizing a BM camera provided with a Ross
Lunding lens of 7.62 cm diameter and a focal distance of 53.34 cm.
   The basic procedure was the comparison of several plates taken in
different epochs, utilizing a Zeiss stereocomparator. All the plates
were referred to the following plate: BM 111 that was taken on April
10, 1942. The whole sample of the 200 plates of the archive were
compared against this plate in the search of new variables.
   The results obtained are listed in Table I. They constitute a
sample of six new objects, all of which are stellar like and the ID
chart of each one is presented in Figure 1.
   In order to see if such objects have not been previously
reported, the coordinates were estimated from the CD and the SAO star
catalogues. Such coordinates were evaluated to the epoch of 1900 and
were searched for in the General Catalogue of Variable Stars
(Kukarkin et al., 1970). None of them has been previously listed in
such catalogues; therefore, it is safe to conclude that the sample of
six stars are being reported for the first time.
   More information is needed in order to decide on the nature of
these stars.


    Table I. Coordinates and magnitudes of the reported stars.

I.D.   DM         R.A.          Dec.        Estimate
                       (2000)               magnitude

B            18h  40m  26s  -29d  06m  06s    11
D            18   18   37   -36   23   09     11
E  -33 13239 18   28   04   -33   21   23      8
F            18   20   09   -32   12   49     10
K            18   10   18   -21   04   29     12
L            18   18   43   -28   04   02     11


                          [FIGURE 1]

 Figure 1   ID charts of the new variables found, scale on the plates is
 indicated.


   Acknowledgements: We would like to thank Dr. O. Cardona for
suggesting this project, to J. H. Pena for his advice and to Dr. R.
Peniche, to M. A. Hobart, and to T. Gomez for their assistance. All
the drawings were made by G. Ceron, and the photographs by I.
Cabanas.




                 JOAQUIN CAMPOS and ANTONIO SANCHEZ

          Instituto Nacional de Astrofisica, Optica y Electronica
                      Apartado Postal 51
                      Puebla, Pue.
                      Mexico, 72000





Reference:

Kukarkin, B.P., Kholopov, P.N., Efremov, Yu.N., Kukarkina, N.P., Kurochkin,
   N.E., Medvedeva, G.I., Perova, N.B., Fedorovich, V.P. and Frolov, M.S.,
   1970, General Catalogue of Variable Stars, Third Edition