COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                    Number 2172

                               Konkoly Observatory
                               Budapest
                               1982 June 28

                               HU ISSN 0374-0676





        SOME REMARKS ON THE T TAURI STAR DR Tau



  In supplementing and completing the known light curves
(Gotz, 1980) the star was inspected on 26 blue-sensitive and on
33 photovisual sky patrol plates of Sonneberg Observatory covering 
the time interval between 1980 January 12 and 1982 February
21. The used sequence of comparison stars in B is given in the
finding chart in Figure 1. The apparent magnitudes m_B of these
stars obtained by linking to the UBV-sequence of the open cluster
NGC 1647 (Hoag et al., 1961) are listed in Table I. The comparison 
stars g,h,i and k are identical with the stars a,b,c and
d given by Kholopov (1951).

                     [FIGURE 1]

             Table I
Comp. star   m_B      Comp. star   m_B
a           10.95         f       13.30
b           11.37         g       13.72
c           11.87         h       14.20
d           12.33         i       14.65
e           12.83         k       15.08

The extended light curve of DR Tau in B is shown in Figure 2.

                   [FIGURE 2]

The star has retained its mean Brightness obviously. But it is
remarkable that the strong light depressions which were starting
from the bright normal light and which were still observed in
the season 1979/80 did probable not appear in the seasons
1980/81 and 1981/82.
  The crosses drawn in Figure 2 represent magnitudes estimated
on 6 objective prism plates obtained with the 50/70/172 cm
Schmidt camera of Sonneberg Observatory.

  More details about the behaviour of DR Tau in the past years
will be published in MVS.





              W. GOTZ

              Akademie der Wissenschaften
              der DDR Zentralinstitut fur
              Astrophysik, Sternwarte
              Sonneberg





References:

Gotz, W., 1980, MVS 8, 143
Hoag, A.A., Johnson, H.L., Iriarte, B., Mitchell, R.I., Hallam,
     K.L., Sharpless, S., 1961, Publ. US Naval Obs., 2nd Ser,
     Vol. 17., No. VII [BIBCODE 1961PUSNO..17....1H ]
Kholopov, P.N., 1951, VS 8, 83