J/A+AS/125/475 DD Mon BV light curves (Qian+ 1997)
Photometric study of the close binary system DD Monocerotis
Qian S., Liu Q., Yang Y., Gu S., Huang Z.
<Astron. Astrophys. Suppl. Ser. 125, 475 (1997)>
=1997A&AS..125..475Q 1997A&AS..125..475Q (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry
Keywords: stars: DD Mon - binaries: eclipsing - stars: fundamental parameters
Abstract:
New BV light curves of the short-period eclipsing binary system DD Mon
have been obtained. Light-curve variability is seen in both B and V
bands as compared with the light curves obtained in 1986 by Yamasaki
et al. (1990AJ.....99.1218Y 1990AJ.....99.1218Y). The light curves are analyzed by using
Wilson-Devinney's synthetic light-curve program, and the present
photometric solution reveals that DD Mon is a near-contact binary with
the secondary component filling the Roche lobe. Combined with Yamasaki
et al.'s (1990AJ.....99.1218Y 1990AJ.....99.1218Y) spectroscopic results, absolute
quantities of DD Mon are derived: mass of the primary
M1=1.05±0.08M☉, mass of the secondary
M2=0.47±0.04M☉, radius of the primary
R1=1.36±0.04R☉, radius of the secondary
R2=1.03±0.03R☉. These results show that the components of DD
Mon have evolved away from the ZAMS and through a mass-transfer
process to the present semi-detached state. The variation in shape of
the light curve may be caused by the evolution of the system and the
activity of dark spots.
Objects:
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RA (2000) DE Designation(s)
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06 45 57 -00 16.9 DD Mon = HD 292319
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 18 402 V observations of DD Mon
table2 18 358 B observations of DD Mon
fig1.ps 82 60024 B and V light curves of DD Mon
tables.tex 76 202 LaTeX version of the tables
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Byte-by-byte Description of file: table1 table2
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Bytes Format Units Label Explanations
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1- 11 F11.4 d HJD Heliocentric Julina date
13- 17 F5.3 mag DMag Differential V or B magnitude (1)
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Note (1): Differential magnitude between these observations and those
obtained in 1986 by Yamasaki et al. (1990AJ.....99.1218Y 1990AJ.....99.1218Y)
V magnitude in table1, B magnitude in table2
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Acknowledgements: Yulan Yang
(End) Patricia Bauer [CDS] 11-Apr-1997