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

                     NUMBER 491

                            Konkoly Observatory
                            Budapest
                            1970 November 28


         VARIABLE STAR COLLOQUIUM IN BAMBERG
            31 AUGUST - 3 SEPTEMBER 1971

     An IAU Colloquium on "New Directions and New Frontiers
in Variable Star Research" will be held in Bamberg,
G. F. R., on 31 August - 3 September 1971, at the invitation
of the Remeis Sternwarte, Astronomisches Institut der 
Universitat Erlangen-Nurnberg. The Colloquium is co-sponsored
by IAU Commissions 27 (Variable Stars) and 42 (Photometric
Double Stars). The Scientific Organizing Committee appointed
by the two Commissions consists of: L. Detre, O. J. Eggen,
M. W. Feast, T. Herczeg, K. Kwee, W. Strohmeier, F. B. Wood, 
and G. H. Herbig (Chairman).
     The Provisional program is as follows:
     I. New Phenomena in very Cool Variables
        A. Polarization
        B. Microwave Emission
    II. Flare Stars: Recent Campaigns, New Insights
   III. Rapid and Ultrarapid Variables (including X-ray
        sources)
    IV. Duplicity and its Consequences Among the Intrinsic
        Variable Stars
        A. Variable Stars in General
        B. Eruptive Variables in Particular
     V. Variable Star Observations from Outside the Earth's
        Atmosphere

     Each Section will begin with an invited introductory
lecture, to be followed by approximately 2 hours of
shorter contributions on the same theme. Those wishing to
present papers should write directly to Dr. Herbig (Lick 
Observatory, University of California, Santa Cruz, California
95060, USA), before July 1 1971 if possible, regarding a
place on the program. A small grant from the IAU is available
for assisting with the travel expenses of a limited number 
of participants. These grants will be awarded about
May 1971; application forms can be obtained either from
Prof. Strohmeier in Bamberg or from Dr. Herbig.


                          G. H. HERBIG
                        Lick Observatory