J/AJ/128/846 VRI observations of CE Leonis (Kang+, 2004)
The chromospherically active contact binary CE Leonis.
Kang Y.W., Lee H.-W., Hong K.S., Kim C.-H., Guinan E.F.
<Astron. J., 128, 846-857 (2004)>
=2004AJ....128..846K 2004AJ....128..846K
ADC_Keywords: Binaries, eclipsing ; Photometry, VRI
Keywords: binaries: eclipsing - stars: chromospheres -
stars: individual (CE Leonis) - stars: spots
Abstract:
We present complete VRI light curves of the contact binary CE Leo and
provide detailed photometric solutions, as well as an analysis of its
period variation. A total of 73 times of minima over 50years,
including our observations, were used for the period study.
Description:
The photometric observations of CE Leo were carried out as part of our
near-contact and contact binary observing program at the Mount Bohyun
Observatory (BOAO), Korea. The VRI observations were made in 1998
February on two nights.
Objects:
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RA (2000) DE Designation(s)
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11 44 24.2 +23 21 23 CE Leo = V* CE Leo
11 44 07.4 +23 17 51 Comparison star = [SST93] CE Leo C
11 44 01.8 +23 22 38 Check star = [SST93] CE Leo CH
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 20 327 VRI Observations of CE Leonis
table3.dat 54 73 Observed Times of Minimum of CE Leonis
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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 A1 --- Filter [VRI] Filter
3- 14 F12.4 d HJD Heliocentric Julian Date
16- 20 F5.3 mag Dmag Observed magnitude difference in Filter
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD-Min Heliocentric Julian Date of minimum
14- 21 F8.1 --- Epoch Orbital epoch (1)
23- 31 F9.6 d O-C1 The (O-C)1 residual
33- 41 F9.6 d O-C2 The (O-C)2 residual
43- 44 A2 --- Type [I II] Type of maximum (1)
46- 48 A3 --- Method Method used (2)
50- 53 A4 --- Ref Reference (3)
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Note (1): For the Meinunger & Wenzel (1968VeSon...7..385M 1968VeSon...7..385M) minima times, the
eclipse types were reversed: primary timings were changed to
secondary timings and vice versa.
Note (2): Method used as follows:
P = Photographic patrol plate observations;
VI = Visual estimates or observations;
PE = Photoelectric observations;
CCD = Charge-coupled device observations.
Note (3): Reference as follows:
BB1 = BBSAG Bull. 9;
BB2 = BBSAG Bull. 14;
BB3 = BBSAG Bull. 15;
BB4 = BBSAG Bull. 21;
BB5 = BBSAG Bull. 37;
BB6 = BBSAG Bull. 92;
BB7 = BBSAG Bull. 107;
BB8 = BBSAG Bull. 112;
BB9 = BBSAG Bull. 121;
BB10 = BBSAG Bull. 125;
BB11 = BBSAG Bull. 128;
BR1 = Brno Contrib. 30;
BR2 = Brno Contrib. 31;
DI = Diethelm 2003IBVS.5438....1D 2003IBVS.5438....1D;
HO = Hoffmann 1983IBVS.2344....1H 1983IBVS.2344....1H;
KR = T. Krzyt, unpublished;
MW = Meinunger & Wenzel 1968VeSon...7..385M 1968VeSon...7..385M;
NE = Nelson 2001IBVS.5040....1N 2001IBVS.5040....1N;
SS = Samec & Su 1991IBVS.3650....1S 1991IBVS.3650....1S;
SZ = Safar & Zejda 2000IBVS.4888....1S 2000IBVS.4888....1S;
TH = This paper;
YL = Yang & Liu 2002A&A...387..162Y 2002A&A...387..162Y.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 08-Feb-2005