COMMISSION 27 OF THE I. A. U.
           INFORMATION BULLETIN ON VARIABLE STARS
                       Number 2586

                                        Konkoly Observatory
                                        Budapest
                                        17 September 1984

                                        HU ISSN 0374 - 0676


                    NEW VARIABLES IN M 80

   To continue an investigation of Messier 80 (NGC 6093, C1614-228) begun
many years ago (Sawyer, 1942) a now series of plates was taken from 1972 to
1983 with the 60 cm telescope of the University of Toronto at Las Campanas,
Chile. Using the blink comparator of the University of Western Ontario three
new variables in the cluster have been discovered on these plates.
   Table I lists the coordinates and magnitude ranges for these new variables, 
numbers 8, 9, and 10. In addition, data are listed for the W Virginis
star, variable 1, in order to current an error of one digit in the y coordinate 
as given in Sawyer Hogg's Second and Third Catalogues of Variable Stars
in Globular Clusters (1955, 1973). Magnitudes are based on the sequence of
Harris and Racine (1974) but because variables 8, 9 and 10 are closer to, the
cluster centre their magnitudes may be too bright.

                      Table I

Variable         x"       y"     Bmax      Bmin
   1           -137      +79     13.7      15.1
   8           - 24      +17     14.6      16.1
   9           + 16      +36     15.3      16.4
  10           - 19      + 1     14.4      15.4

  Since variable 6, S Sco, and variable 7, R Sco, are field stars, the
total number of variables now thought to be members of the cluster is eight,
in addition to the nova, T Sco, seen visually in 1860.
   At the present time the plates are in the process of measurement with the
iris photometer of the University of Western Ontario and it is planned to
discuss the magnitudes, periods and light curves of all ten variables in a
later paper. With a series of plates taken in 1939 with the 90 cm telescope
of the University of Arizona and three other series of University of Toronto
plates beginning in 1946, our observations now extend over four decades into
1983. This should enable us to discuss the long term behaviour of the 
variables.


            AMELIA WEHLAU, PAUL GANNON and PHILIP RICE	

            Department of Astronomy 
            The University of Western Ontario
            London, Canada  N6A 3K7

            HELEN SAWYER HOGG

            David Dunlap Observatory
            University of Toronto
            Richmond Hill, Ontario, Canada L4C 4Y6

References:

Harris, W.E. and Racine, R., 1974, Astron.J. 79, 472. [BIBCODE 1974AJ.....79..472H ]
Sawyer, Helen B., 1942, Publ. David Dunlap Obs. 1, No.12. [BIBCODE 1942PDDO....1..241S ]
Sawyer, Helen B., 1955, Publ. David Dunlap Obs. 2, No.2.
Sawyer, Hogg, H., 1973, Publ. David Dunlap Obs. 3, No.6. [BIBCODE 1973PDDO....3....6S ]