COMMISSION 27 OF THE I.A.U.
              INFORMATION BULLETIN ON VARIABLE STARS
                           Number 1273

                                                    Konkoly Observatory
                                                    Budapest
                                                    1977 May 5


         TWO DELTA SCUTI STARS IN THE PLEIADES

Observations of two Delta Scuti suspects in the Pleiades
cluster were obtained using the 40-cm reflector and a dry ice
cooled 1P21 at the Grundy Observatory. An OG-4 (4mm) filter 
approximates the V magnitude. Observations were made differentially 
between variable and comparison, and extinction was removed.
Light curves were analyzed using a periodogram technique after
Gray and Desikachary (1973, Ap. J. 181, 523). Stars are identified 
by TR numbers (Trumpler 1921, Lick Obs. Bull. 10, 110).
   Breger (1972, Ap. J. 176, 367) reported TR 51 a possible Delta
Scuti star with a period of about 0.024+-0.002 days and an amplitude 
of about 0.01 magnitudes. TR 51 was observed on one night
with TR 121 as a comparison star. Periodogram analysis of the
data gives a period of 0.0205 days with an amplitude of 0.01
magnitudes peak to peak. Subtraction of this peak and its side
lobes reveals a second maximum at a period of 0.017 days with
an amplitude of about 0.007 magnitudes peak to peak.
   Breger also reported TR 390 as a possible Delta Scuti star
with a period of 0.049+-0.004 days and an amplitude of 0.01 
magnitudes. Observations of TR 390 were obtained on one night 
using TR 365 as a comparison star. Periodogram analysis of the
data reveals a period of 0.047 days and an amplitude of 0.011
magnitudes peak to peak, in good agreement with Breger. Removal
of this variation from the periodogram reveals a second peak at
0.070 days with a peak to peak amplitude of about 0.006 magnitudes.
   Beat phenomenon is likely in both TR 51 and TR 390. Further
observations are needed to confirm periods and amplitudes.





       Joseph R. Grundy Observatory            MICHAEL A. SEEDS
       Franklin & Marshall College
       Lancaster, PA. 17604, U.S.A.            CHARLES J. STEPHENS