2017MNRAS.466.1118Z


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET11:25:26

2017MNRAS.466.1118Z - Mon. Not. R. Astron. Soc., 466, 1118-1126 (2017/March-3)

Two W-subtype contact binaries: GQ Boo and V1367 Tau.

ZHANG J., QIAN S.-B., HAN Z.-T. and WU Y.

Abstract (from CDS):

Two contact binaries, GQ Boo and V1367 Tau, were observed and analysed with a new method to obtain the absolute parameters. The light-curve analysis shows that both of them are obvious W-subtype contact binaries, with much more massive but apparently cooler components (M2/M1 ≃ 2 and 4, T2/T1 ≃ 0.95 and 0.94). The orbital periods were studied using the O-C diagrams, and it is thought that the minima timings were heavily affected by the longstanding magnetic activities on the star surface, so the minima timings cannot represent the real period changes. The mass-radius relationships were proposed by the light-curve analysis alone, which is equivalent to the mean density. The density and temperature can determine the other absolute parameters in most of the time. With the almost complete star parameter space provided by PARSEC, approximate masses and radii were obtained (0.52 ± 0.08 M and 1.01 ± 0.15 M for GQ Boo, and 0.22 ± 0.01 M and 0.92 ± 0.06 M for V1367 Tau). The mass-radius relationship is a neglected useful tool to calculate the mass and radius, especially for the detached binaries.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: photometric - binaries: eclipsing - stars: evolution - stars: evolution

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* SS Ari EB* 02 04 18.4070835062 +24 00 02.292158581   11.00 10.15     G0 106 0
2 V* V1367 Tau EB* 05 30 19.0666599725 +23 51 26.568541459   11.90 11.11     ~ 8 0
3 V* FG Hya EB* 08 27 03.9413981176 +03 30 52.329514882   10.62 10.04   9.401 G0 175 0
4 Cl* NGC 2682 SAND 1282 EB* 08 51 37.8473687335 +11 50 57.092630015 13.964 13.89 13.333   12.634 F7V 146 0
5 V* AM Leo EB* 11 02 10.8845725849 +09 53 42.658542812   9.86 9.33   8.417 F8Vn 181 0
6 V* AW UMa WU* 11 30 04.3159101276 +29 57 52.677255375   7.27   6.7   F0 272 1
7 V* RZ Com EB* 12 35 05.0595716847 +23 20 14.030368274   11.09 10.57     G0Vn 181 0
8 V* GQ Boo EB* 14 59 36.6675827660 +25 02 44.879948518     12.82     ~ 22 0
9 V* TZ Boo EB* 15 08 09.1344964536 +39 58 12.864002715   10.60       G2Vn 194 0

    Equat.    Gal    SGal    Ecl

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2021.03.03-11:25:26

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