COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2845

                                       Konkoly Observatory
                                       Budapest
                                       7 January 1986

                                       HU ISSN 0374 - 0676




     OBJECTIVE-PRISM DISCOVERIES IN A REGION OF THE MILKY WAY

  An inspection of twelve 8deg-prism plates taken with the 70-cm meniscus
telescope of the Abastumani Astrophysical Observatory (USSR) has yielded a
number of hitherto unrecognized peculiar or otherwise interesting stars. The
region surveyed is of about 60 square degrees, its center being in the 
association Vulpecula OB4. The reciprocal dispersion of the spectrograms is 166
A/mm at Hgamma and the spectra are widened to 0.4 mm. The exceptional seeing at
Abastumani together with the high quality of the spectra allows peculiar
star discoveries with a great certainty (Kharadze, E.K., and Bartaya, R.A.,
1973, IAU Symp., 50, 91). Many of these are of sufficient interest to justify
early publications.
  The stars suspected of being either of type Ap or Am, as well as two
composite objects are listed in Table I. The BD numbers and magnitudes are
given; the numbers in the SAO catalogue are also noted if they exist. In the
last column the observed peculiarities in the spectra are indicated; a semicolon
is added for stars whose peculiarity is discerned on a single plate.
  Most of the peculiar stars found are of the classical varieties but some
may represent something new. Nevertheless, a higher-resolution study of these
and other objects in the list is obviously desirable in order to check their
peculiarity and to assign to them a more precise type.




                         TSVETANKA RADOSLAVOVA
                       Department of Astronomy and
                      National Astronomical Observatory
                      Bulgarian Academy of Sciences
                      72 Lenin Blvd., 1784 Sofia, Bulgaria


                           Table I

  BD No.   m     SAO No.   Remarks and type

+20deg4159   9.5   -         Ap or F0p,lambda lambda 4128,4077
      4191   8.7   087400    Ap, lambda lambda 4128,4077
      4330   9.2   -         Ap, lambda 4128
+21deg3798   9.4   -
      3910   8.9   087721    Am
      3977   9.5   -         A+F composite
      3983   9.3   -         A+G: composite
      3996   9.3   -         Ap: , lambda lambda 4128,4077
+22deg3827   8.5
      3858   9.4
+24deg3769   9.2   087298    Ap,lambda lambda 4128,4077
      3780   8.8   087366    Ap,lambda lambda 4128,4077
      3810   9.0   087452    Ap, lambda 4128
+25deg3918   9.1   087547    Ap: or Am:,lambda 4128
      3942   9.4   -         Am or Ap
      4028   9.5   -         Ap, lambda lambda 4128, 4077
+26deg3581   9.5
      3698   8.9   087849    Am
+27deg3439   9.4   -
      3515   9.0   087724    Am
      3567   9.3
+28deg3421   9.3   087502    Am