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J/other/NewA/17.46 BVR light curves of V1191 Cyg (Ulas+, 2012)
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table1.dat
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Beginning of ReadMe :J/other/NewA/17.46 BVR light curves of V1191 Cyg (Ulas+, 2012)
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Marginally low mass ratio close binary system V1191 Cyg.
Ulas B., Kalomeni B., Keskin V., Kose O., Yakut K.
<New Astron. 17, 46 (2012)>
=2012NewA...17...46U
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ADC_Keywords: Binaries, eclipsing ; Stars, variable ; Stars, late-type ;
Photometry, VRI
Keywords: stars: binaries: eclipsing - stars: binaries: close -
stars: individual: V1191 Cyg - stars: fundamental parameters
Abstract:
We present the analysis of photometric and spectroscopic variation,
and orbital period study of the late-type contact binary system
V1191 Cyg. The system is found to be a contact binary system having
strange configuration with very small mass ratio and short orbital
period comparing with the other members of the same group. We
determined a new set of stellar physical parameters for hot and cooler
companion as M_h_=0.13(1)M_sun_, M_c_=1.29(8)M_sun_,
R_h_=0.52(15)R_sun_, R_c_=1.31(18)R_sun_, L_h_=0.46(25)L_sun_,
L_c_=2.71(80)L_sun_, and the separation between the components
a=2.20(8)R_sun_ from the simultaneous solution of the light and
radial velocity curves. Analyses of the mid-eclipses time of the
system indicate a period increase of dP/dt=1.3(1)x10^-6^days/yr that
can be interpreted in terms of the high mass transfer
dM/dt=2.0(4)x10^-7^M_sun_/yr from the less massive component to the
more massive one.
Description:
Photometric analysis of the contact binary V1191 Cyg is presented.
Physical and orbital parameters of the system are determined. It is
found that the the system has very small mass ratio and short orbital
period. Results of the period analysis prove an external third body.
Objects:
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RA (2000) DE Designation(s)
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20 16 50.8 +41 57 41 V1191 Cyg = V* V1191 Cyg
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