COMMISSION 27 OF THE I. A. U.
           INFORMATION BULLETIN ON VARIABLE STARS
                        Number 1136

                                   Konkoly Observatory
                                   Budapest
                                   1976 May 27




       THIRTY ECLIPSING BINARIES PROBABLY 100 PS DISTANT
                      FROM THE SUN


   The list below contains thirty eclipsing variables, which may
be 100 ps distant from the Sun. For these stars Pi_f ~ 0.01", where
Pi_f denotes calculated photometric parallax (Dworak 1975).

   DV Aqr   SV Cam   BS Dra     SU Ind   ER Ori   GR Tau
   EE Aqr   VZ CVn   CO Eri     UV Leo   KZ Pav   HO Tel
   RR Ari   CW Cas   GX Gem     AP Leo   RS Sct   DZ Vel
   TZ Boo   RS Cha   RV Gru     UX Men   AU Ser   DL Vir
   VW Boo V1061 Cyg  HS Hya   V508 Oph   EN Tau    W Vol

   The trigoneometric parallaxes for these thirty eclipsing 
binaries, together with forty given earlier (Dworak 1973), should
be measured in the first term.
   Moreover, the photometric and spectrophotometric observations
of these eclipsing stars are very needed. These observations would
considerably amplify the material for investigation of the physical 
properties Pi_f close binary systems.





                              T.Z. DWORAK
                          Astronomical Observatory
                        of the Jagiellonian University
                            Krakow, Poland.



References:
Dworak, T.Z. 1973, I.B.V.S., No. 816
         1975, Acta Astr., 25, 383 [BIBCODE 1975AcA....25..383D ]