COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      Number 1008

                                  Konkoly Observatory
                                  Budapest

                                  1975 June 17



       NEW VARIABLE STARS IN A FIELD AROUND 38 o Per



   For an investigation of the variable star content of the stellar
association Per OB 2 a total of 76 blue patrol plates covering about
6 x 6 square degrees of the central part of the association have been
obtained with the astrograph of Hoher List observatory (Sonnefeld four
lens system, F = 1500 mm, F/5). The plates, taken between September
1969 and October 1973, are centered on 38 o Per, slightly north of the
T-association Per T 1, which is a member of Per OB 2. About half the
plates have a limiting magnitude of 17.5m, on most plates of the rest
it is about 16.8m.
   The search for variable stars resulted in the discovery of 6 new
variables and the rediscovery of the suspected variable CSV 327=Ross 18
which has the number 3 in the Table below. The only note on this star
is that of F.E. Ross (1927, Astron.Journal 37, 155), who supposed that
this object may also be an asteroid.
   The limits of variability of these seven objects were estimated
with a number of selected comparison stars around each variable, which
were calibrated with a secondary standard sequence near the center of
the plate. This sequence itself has been derived by means of photographic
transfer of a UBV-sequence in the galactic cluster NGC 1778 (Hoag, A
A. et.al. 1961, Publ. US Naval Obs. Vol. 17 part 7).
   The position of each variable relative to at least 3 surrounding
AGK_3-stars were measured with a zeiss coordinate measuring machine.
With these positions the corresponding coordinates were calculated using 
Schlesinger's dependences method.
   Finally, an estimate of the colour of the variables on the blue
and red print of the Palomar Sky Survey shows that except stars No. 1
and No. 6, which have approximately equal brightness on both prints,
all stars are rather red objects.
   The identification charts of the variables, which have north up
and west to the right, are enlargements from two original plates and
have a limiting magnitude of about 16.5m.
   Details will be published elsewhere.


----------------------------------------------------
No.   alpha(1950)    delta(1950)     Max       Min
----------------------------------------------------
1     03h28m23.9s    +30d20'45"      19.0m     15.5m
2     03 35 18.3     +34 3029        15.9      16.5
3     03 35 59.3     +32 4245        14.7     (17.5
4     03 41 34.9     +33 0551        14.9      15.9
5     03 92 30.3     +34 3711        15.1      17.2
6     03 94 30.2     +34 5130        13.9      19.7
7     03 49 54.0     +31 4502        14.8      16.0
----------------------------------------------------

                    [FIGURE 1]


                                       F. GIESEKING
                                   Astronomiche Institute
                                   der Universitat Bonn