COMMISSION 27 OF THE I. A. U.
            INFORMATION BULLETIN ON VARIABLE STARS
                        Number 3044


                                             Konkoly Observatory
                                             Budapest
                                             7 July 1987

                                             HU ISSN 0374-0676



            11 NEW VARIABLES IN GLOBULAR CLUSTER M 5


  This paper continues the presentation of results of a major investigation
for discovering new variables in central regions of globular clusters.
Scrutinizing the number of "cluster variables" discovered so far one anticipates
the possibility of finding more new ones ( Kadla, Gerashchenko, 1984 ).
Study of the clusters M 3, M 13, M 5 and M 92 resulted in discovery of 51
new variables.
  The globular cluster M 5 is one of the richest in variables. The Third
Catalogue of Globular Clusters (Sawyer, 1973) lists 103 variable stars in this
cluster. Five of them did not prove to be variable, the variability of one
further star has been dubious, periods have not been determined for V51, V101,
V102 and V103.
  About 30 photographic plates taken in B colour have been used for searching
new variables in M 5. The plates were taken with the two meter telescopes in
Ondrejov Observatory (Czechoslovakia), in Rozhen National Observatory 
(Bulgaria) and in Shemakha Observatory (U.S.S.R.), and with the one meter 
telescopes of the Astronomical Institute of the Tadjik S.S.R. and of the Konkoly
Observatory, respectively. 11 new variables have been found and the variability
of V51 and V102 have been confirmed. The dwarf nova V101 fainter than 17m
according to the Sawyer Catalogue was not visible on our plates.
  The positions of the new variables have been measured on plates taken
with the two meter telescope in Ondrejov (7"/mm). In the 2. and 3. columns
of Table I, the coordinates of the newly discovered variables are listed.
The next column contains the DeltaB values, i.e. the estimated magnitude 
differences. In the last column we give the Kustner numbers (Kustner, 1933).

              Table I

N       X       Y       DeltaB      K
 
104   -10.2    42.1       1.1      542
105   - 6.0    15.5       0.8
106   - 5.1     9.5       0.9
107   - 0.3   - 4.0       1.0
108     9.2   - 2.6       0.6
109    19.2     1.5       1.0
110    23.8    16.4       0.5
111    24.2   - 3.4       0.6
112    28.7   -31.4       1.1
113    28.8   -33.9       0.8
114    29.7   - 2.5       1.4      716



                       A. GERASHCHENKO
                      Pulkovo Observatory
                      Leningrad, U.S.S.R.

References:
Kadla, Z., Gerashchenko, A., 1984, Izvestiya Glavnaya Astr. Obs. 202. p 83, [BIBCODE 1984IzPul.202...83K ]
Kustner, F., 1933, Veroff. Univ.Sternw. Bonn No. 26
Sawyer-Hogg, H., 1973, Publ. David Dunlap Obs. 3, N6, [BIBCODE 1973PDDO....3....6S ]