J/AJ/145/9 BVRI light curves of the early-type binary V382 Cyg (Yasarsoy+, 2013)
The interacting early-type binary V382 Cyg.
Yasarsoy B., Yakut K.
<Astron. J., 145, 9 (2013)>
=2013AJ....145....9Y 2013AJ....145....9Y
ADC_Keywords: Binaries, eclipsing ; Photometry, UBVRI ; Stars, early-type
Keywords: binaries: close - binaries: general - stars: early-type -
stars: evolution - stars: fundamental parameters -
stars: individual: V382 Cyg
Abstract:
We analyze photometric and spectroscopic data and study the orbital
period of the early-type interacting binary system V382 Cyg by using
all the available data. We obtain a simultaneous light and radial
velocity curve solution. The derived physical parameters of the
primary and secondary stellar components are M1=27.9(5)M☉,
M2=20.8(4)M☉, R1=9.7(2)R☉, R2=8.5(2)R☉,
log(L1/L☉)=5.152(20), and log(L2/L☉)=4.954(19) while
the separation of the components is a=23.4R☉. Newly obtained
parameters yield the distance of the system to be 1466(76)pc. Analyses
of the mid-eclipse times indicate a period increase of
dP/dt=4.2(1)x10-7days/yr that can be interpreted in terms of the
high-mass transfer (dM/dt=6.1(5)x10-6M☉/yr) from the less
massive component to the more massive component. Finally, we model the
evolution of the components using non-conservative codes and discuss
the results obtained. The age of the binary system is estimated to be
3.85Myr.
Description:
The observations were carried out in B, V, R, and I filters on 25
nights in 2007-2011 with the 40cm telescope that is equipped with the
2048*2048 Alta CCD camera at Ege University Observatory (EUO).
Objects:
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RA (2000) DE Designation(s) (Period)
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20 18 47.22 +36 20 26.1 V382 Cyg = HD 228854 (P=1.885515)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 29 11599 Observational points of V382 Cyg
table2.dat 22 65 Times of minimum light for V382 Cyg
refs.dat 75 26 References
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See also:
V/119 : Catalogue of field contact binary stars (Pribulla+, 2003)
II/233 : Tycho variables stars (Piquard 2001)
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
V/120 : Catalog of early-type contact binaries (Bondarenko+, 1996)
J/AN/334/860 : Catalogue of eclipsing variables. V2 (Avvakumova+, 2013)
J/MNRAS/427/2917 : Classification of Hipparcos variables (Rimoldini+, 2012)
J/other/IBVS/5984 : Minima and maxima of 503 variables (Hubscher, 2011)
J/AN/331/349 : O, B-type and red supergiant masses & lum. (Hohle+, 2010)
J/MNRAS/405/1930 : Period changes of EA, EB EW binaries (Liao+, 2010)
J/MNRAS/380/1599 : Ephemeris of V382 Cyg and TU Mus (Qian+, 2007)
J/AJ/134/642 : BV light curves of BB Pegasi (Kalomeni+, 2007)
J/A+A/446/785 : Catalogue of eclipsing variables (Malkov+, 2006)
J/other/IBVS/5731 : Minima and maxima of 816 variables (Hubscher+, 2006)
J/A+A/426/1001 : Catalog of contact binary stars (Csizmadia+, 2004)
J/AcA/54/207 : Ephemerids of eclipsing binaries (Kreiner, 2004)
J/other/A+AT/23.213 : Catalog of massive close binaries (Polushina, 2004)
J/A+A/373/576 : Detection of Tycho variables stars (Piquard+, 2001)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d HJD Heliocentric Julian Date
15- 20 F6.4 --- Phase Phase (1)
22- 27 F6.3 mag Dmag Differential magnitude in Filter (2)
29 A1 --- Flt [BVRI] Filter used (B, V, R, or I)
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Note (1): Calculated using the equation (1) in the paper:
HJD MinI=2454344.4972(8)+1.8855270(2)*E.
Note (2): Difference between the variable V382 Cyg and the comparison star
HD 193204.
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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 HJD Heliocentric Julian Date of minimum light
14- 19 F6.4 d e_HJD ? Error in HJD
21- 22 I2 --- Ref Reference; in refs.dat file
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode Bibliographic code
24- 40 A17 --- Aut Author's name
42- 75 A34 --- Com Comments
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 20-Feb-2014