COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 2345

                                      Konkoly Observatory
                                      Budapest
                                      2 June 1983

                                      HU ISSN 0374-0676


    THE PHOTOMETRIC BEHAVIOUR OF DR TAURI IN THE SEASON 1982/83

  In supplementing and completing the known light curves in B (Gotz, 1980,
1982) the star was inspected on 12 blue-sensitive sky patrol plates of
Sonneberg Observatory (observer H. Huth) covering the time interval between
1982 August 22 and 1983 March 13. Besides, 26 plates in B (ORWO-ZU 21 +
GG 13 + BG 12) from 25 nights between 1982 August 22 and 1983 March 13 were
obtained with the 50/70 cm Schmidt camera of Sonneberg Observatory. On these
plates the star was measured on the base of the given sequence of comparison
stars (Gotz, 1982).
  All but one of the sky patrol plates are nearly congruent in date with the
plates of the Schmidt telescope. Therefore the Schmidt plates were preferred
in constructing the light curve which is shown in Figure 1. There the dots
represent measurements on Schmidt plates and the open circle the only
estimation on sky patrol plates which is not congruent in date. As in the
light curve of the season 1981/82 (Gotz, 1982) magnitudes estimated on 
objective prism plates are marked by crosses in Figure 1.

                           [FIGURE 1]

 When comparing the given light curve with those obtained in former years
we find that DR Tauri obviously has retained its mean brightness. There is
only one weak light depression (m_B = 12.90m) which was starting from the bright
normal light. But this statement does not contradict the expressed expectation,
that the amplitude of the star became smaller in the last seasons.

 More details about the behaviour of DR Tauri will be published in MVS.





                   W. GOTZ

             Akademie der Wissenschaften
             der DDR Zentralinstitut fur
             Astrophysik, Sternwarte
             Sonneberg





References:

Gotz, W., 1980, I.B.V.S. No. 1747
Gotz, W., 1982, I.B.V.S. No. 2172