COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS NUMBER 587 Konkoly Observatory Budapest 1971 October 19 Veroffentlichungen der Remeis-Sternwarte Bamberg Astronomisches Institut der Universitat Erlangen-Nurnberg Band VIII, Nr. 98 Florida Contribution Nr. 28 ELEMENTS FOR TWO BAMBERG VARIABLES The derivation of periods of variable stars from sky patrol plates can lead to spurious periods due either to insufficient data to obtain a unique period or the distribution of exposure times as a result of observing conditions. One such example would appear to be BV 626. Although the originally published elements were that of a Cepheid with a period of 6.61d (IBVS Nr. 100), it has recently been suggested by J. GRAHAM (private communication) that the star may have a much shorter period. With a larger number of sky patrol plates from the Southern Station of the Remeis Observatory Bamberg at the Boyden Observatory, South Africa and from the Southern Station of the University of Florida Gainesville at the Mount-John-Observatory, New Zealand, the following elements have been found: BV 626 = CoD -28d0307 (10m) Min = JD 244 0553.285 + 0.463 113d . E Maxima E O-C ------------------------------------- 2438297.452(1/2) -4871 -0.010 8621.566 -4171 -0.054 8641.494 -4128 -0.061 8707.347(1/2) -3985 +0.067 8728.274(1/2) -3941 +0.117 8979.598(1/2) -3398 -0.029 9006.504 -3340 +0.016 9383.463(1/2) -2526 +0.001 9389.458 -2513 -0.024 9435.307 -2414 -0.023 9436.309(1/2) -2412 +0.052 9442.319(1/2) -2399 +0.042 9443.316(1/2) -2397 +0.113 9767.436(1/2) -1697 +0.054 2440527.347 - 56 -0.004 0554.277(1/2) + 2 +0.066 ------------------------------------- Ampl. 0.85m; RR Lyrae BV 1481 = CoD -23d0737(7.5m) = CAP -23d0227(6.2m) = HD 12180 F_2 Min = JD 244 0566.652 + 0.733 282d . E Minima E O-C ----------------------------------------- 2438369.313(1/4) -2996.5 -0.059 8728.319 -2507.0 +0.005 8995.594(3/4) -2142.5 -0.001 9006.549(3/4) -2127.5 -0.045 9060.417(1/2) -2054.0 -0.073 9361.579(1/4) -1643.5 +0.076 9383.507(3/4) -1613.5 +0.006 9404.392 -1585.0 -0.007 9414.367(1/4) -1571.5 +0.067 9444.359(3/4) -1530.5 -0.005 9761.491 -1098.0 -0.018 9768.483(1/2) -1088.5 +0.009 9771.463(1/2) -1084.5 +0.055 0526.391(1/4) - 55.0 +0.070 0530.392(1/2) - 49.5 +0.038 0566.285 - 0.5 +0.000 ----------------------------------------- Amplitude 0.5m with a deep secondary minimum, EB R. BLOOMER Remeis-Sternwarte Bamberg and University of Florida Gainesville