COMMISSION 27 OF THE I.A.U.
INFORMATION BULLETIN ON VARIABLE STARS
Number 1254
Konkoly Observatory
Budapest
1977 March 24
PHOTOELECTRIC MINIMA OF AB And AND X Tri
I have observed AB And on seven nights, and X Tri on three
nights during the fall of 1976. A 30 cm Maksutov telescope was
used with an EMI 6256S photomultiplier tube and standard B,V
filters.
Three primary and three secondary minima were obtained
for AB And, and two primary for X Tri. They are given in the
following:
AB And Hel.Min.J.D. Min. O-C
2442043.3047 II +.0006
043.4649 I -.0007
045.2941 II -.0014
049.4433 I -.0008
053.4262 I -.0005
128.2694 II +.0009
Quester's formula Min.I.= J.D.2436109.57928+0.33189215d E
(IBVS 190) was used in the calculation of O-C's.
A detailed analysis of this system will be published in
the "Communications de la Faculte des Science de L'Universite
d'Ankara, Serie A3: Astronomie, Annee 1977".
X Tri Hel.Min.J.D. Min. O-C
2443131.2753 I -.0214
32.2466 I -.0215
SAC 1977 formula Min.I.= J.D.2440984.2205+0.9715277d was used
in the calculation of O-C's.
ZEKI TUFEKCIOGLU
Ankara University Observatory
A.U. Fen Fakultesi
Ankara - Turkey
[From IBVS 1300]
Corrigenda
I.B.V.S. No. 1254
Z. Tufekcioglu : Photoelectric Minima of AB And and X Tri
The table for AB And should read:
Hel. Min. J.D. m.e. Min. O-C
2443044.3047 +-.0006 II +- .0099
044.4694 .0004 I .0036
046.2941 .0008 II .0029
050.4433 .0015 I .0035
054.4262 .0004 I .0038
129.2694 +-.0007 II +- .0052
The table for X Tri should read:
Hel. Min. J.D. m.e. Min. O-C
2443132.2753 +- .0004 I +- .0071
33.2466 +- .0002 I +- .0076
[...]