J/MNRAS/379/1665 XX Cep BVRI light curves (Lee+, 2007)
A period study and light-curve synthesis for the Algol-type semidetached binary
XX Cephei.
Lee J.W., Kim C.-H., Koch R.H.
<Mon. Not. R. Astron. Soc., 379, 1665-1680 (2007)>
=2007MNRAS.379.1665L 2007MNRAS.379.1665L
ADC_Keywords: Binaries, eclipsing ; Photometry, UBVRI
Keywords: binaries: eclipsing - stars: individual: XX Cephei -
stars: oscillations
Abstract:
We obtained CCD photometric observations of the Algol-type
semidetached binary XX Cephei (XX Cep) during 15 nights from 2002
September 17 to 2003 February 2, and also on 2005 January 21. Except
for those data taken on the last night of the concentrated observing
season, the 3881 measurements were obtained over an interval of only
106 nights. From these data, four new times of minimum light were
calculated. The (O-C) diagram formed from all available timings, and
thus the orbital period of the system, can be partly represented as a
beat effect between two cyclical variations with different periods
(P1'=42yr, P2'=181yr) and amplitudes (K1=0.015d, K2=0.103d),
respectively. Both physical and non-physical interpretations of these
cycles were investigated.
Objects:
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RA (2000) DE Designation(s)
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23 38 20.3 +64 20 03 XX Cep = HD 222217
23 37 55.6 +64 18 22 GSC4288-0100 = 2MASS J23375555+6418224 (comp. star)
23 38 51.2 +64 19 57 GSC4288-0150 = 2MASS J23385117+6419568 (check star)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 79 1008 CCD photometric observations of XX Cep
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJDB Heliocentric Julian date of observation in B band
14- 19 F6.3 mag DBmag Differential B magnitude
21- 32 F12.4 d HJDV Heliocentric Julian date of observation in V band
34- 39 F6.3 mag DVmag Differential V magnitude
41- 52 F12.4 d HJDR Heliocentric Julian date of observation in R band
54- 59 F6.3 mag DRmag Differential R magnitude
61- 72 F12.4 d HJDI Heliocentric Julian date of observation in I band
74- 79 F6.3 mag DImag Differential I magnitude
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 11-Dec-2007