COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                    Number 1329

                                 Konkoly Observatory
                                 Budapest
                                 1977 August 18




    PHOTOGRAPHIC OBSERVATIONS OF DELTA CEPHEI VARIABLES



         An investigation of 17 cepheids was carried out on blue
plates of the Bamberg Sky Survey by the Argelander step method.
From time intervals of about 1000d to 4000d all observations
were taken into a mean curve. From these curves the values of
Table 1 were determined. The magnitudes of the comparison stars
were determined with nearby Selected Areas (1) or - in the case
of the Cassiopeiae-variables - taken from the AGK 3 - Catalogue
(2). For the calculation of the mean curves, the period values
of the GCVS 1969 (3) were used.
                     Table 1 :  Results
           Maximum (J.D.)     O-C  Delta mpg   (M-m)/P    N     Remarks
RX Aur   2426219.80d+-0.05d  +0.16d    0.8      0.45P    104
           26997.79          -0.67     1.1      0.46     115
           36542.00          +0.14     0.9      0.48      53
SY Aur     26221.88          -0.43     1.1      0.44     102
           27368.30          -0.32     1.0      0.49     103
UY Car     38444.16          -0.02     0.8:     0.37      95        1
           39231.32          -0.07     1.2      0.35     104
UZ Car     38444.23          +0.05     1.0      0.36      92
           39235.00          -0.29     1.0      0.31     119
AQ Car     38445.36          +0.35     0.7      0.58      93
           39236.58          +0.29     0.8      0.52     113
GX Car     38445.41          +0.32     1.1      0.27      96         2
RW Cas     25557.29          -2.06     1.2      0.29      98
           26223.87          -1.43     1.1      0.32      92
RY Cas     26165.68          -0.19     1.5      0.37      92    
SW Cas     25747.31          +0.06     1.1      0.38      95
           26269.45          -0.19     1.1      0.33      94
           26873.58          +0.06     1.1      0.38      96
SY Cas     26932.82          -0.04      -       0.36:     49
XY Cas     25854.91          +0.11     0.9      0.40:     95
DL Cas     26163.82          +0.52      -       0.38      94
FM Cas     26933.83:         -1.29     0.9      0.32      46

         Maximum (J.D.)        O-C      mpg    (M-m)/P     N        Remarks
V  Lac   2425746.61d+-0.05d  +0.02d     1.7     0.29P     97
           26872.97          +0.12      1.5     0.36      96
X  Lac     25744.43          +0.24      1.1     0.36      98           3
           26931.54          +0.32      0.9     0.38      97
Z  Lac     25747.37         +-0.00      1.5     0.37      96
           26879.52          +0.02      1.4     0.42      96
RR Lac     26870.80          -0.15      1.4     0.23      94
           25747.99          -0.13      1.5     0.27      97
          Remarks: N = Number of plates; 1) small number of maximum-
observations; 2) may be a classical cepheid from the light-curve;
3) used period P=5.44506 days, periods given in the GCVS-remarks
for this time interval do not represent the observations.

All O-C values are calculated with the elements of the GCVS
1969 (3).





                            M. KIEHL and U. HOPP
                            Dr. Remeis Observatory

                                   Bamberg





References:
(1) Brun, Vehrenberg - Atlas of Harvard-Groningen Selected
       Areas, Treugesell-Verlag, Dusseldorf (1965)
(2) Dieckvoss - AGK 3, Hamburg-Bergedorf (1975)
(3) Kukarkin et al. - General Catalogue of Variable Stars,
       3rd Edition, Moscow (1970)