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@article{1567829,
author = {Bakis, Volkan and Mikulášek, Zdeněk and Janík, Jan and Zejda, Miloslav and Tunc, Efecan and Nitschelm, Christian and Bilir, Selcuk and Liška, Jiří and Bakis, Hicran},
article_location = {DORDRECHT},
article_number = {9},
doi = {http://dx.doi.org/10.1007/s10509-019-3650-9},
keywords = {Stars; individual MQ Cen; Stars; fundamental parameters; Binaries; eclipsing; Techniques; photometry; Techniques; spectroscopy},
language = {eng},
issn = {0004-640X},
journal = {Astrophysics and Space Science},
title = {Study of eclipsing binary and multiple systems in OB associations V: MQ Cen in Crux OB1},
url = {https://link.springer.com/article/10.1007/s10509-019-3650-9},
volume = {364},
year = {2019}
}
TY - JOUR
ID - 1567829
AU - Bakis, Volkan - Mikulášek, Zdeněk - Janík, Jan - Zejda, Miloslav - Tunc, Efecan - Nitschelm, Christian - Bilir, Selcuk - Liška, Jiří - Bakis, Hicran
PY - 2019
TI - Study of eclipsing binary and multiple systems in OB associations V: MQ Cen in Crux OB1
JF - Astrophysics and Space Science
VL - 364
IS - 9
SP - 1-10
EP - 1-10
PB - Springer
SN - 0004640X
KW - Stars
KW - individual MQ Cen
KW - Stars
KW - fundamental parameters
KW - Binaries
KW - eclipsing
KW - Techniques
KW - photometry
KW - Techniques
KW - spectroscopy
UR - https://link.springer.com/article/10.1007/s10509-019-3650-9
L2 - https://link.springer.com/article/10.1007/s10509-019-3650-9
N2 - The early-type massive binary MQ Cen (P-orb = 3.7 d) has been investigated by means of high-resolution (R similar to 48 000) spectral analysis and multi-band (Johnson BVRI and Stromgren vby) light curve modeling. The physical parameters of the components have been found to be M-1 = 4.26 +/- 0.10 M-circle dot, R-1 = 3.72 +/- 0.05 R-circle dot, T-eff1 = 16 600 +/- 520 K, and M-2 = 5.14 +/- 0.09 M-circle dot, R-2 = 7.32 +/- 0.03 R-circle dot, T-eff2 = 15 000 +/- 500 K for the primary and secondary, respectively. The orbital inclination is i = 87.0 +/- 0.2 deg. The distance to MQ Cen has been derived to be d = 2460 +/- 310 pc which locates it in the Crux OB1 association. However, the age of MQ Cen (similar to 70 Myr) is higher than the one reported for the Crux OB1 association (similar to 6 Myr). The derived masses are implying a spectral type of B5 for the primary and B4 for the secondary component. Nevertheless, the secondary component, which is more massive, appears to be cooler than the primary component: It has completed its lifetime on the main-sequence and it is now positioned at the turn-off point of the giant branch, meanwhile the less massive primary component is still staying on the main-sequence.
ER -
BAKIS, Volkan, Zdeněk MIKULÁŠEK, Jan JANÍK, Miloslav ZEJDA, Efecan TUNC, Christian NITSCHELM, Selcuk BILIR, Jiří LIŠKA a Hicran BAKIS. Study of eclipsing binary and multiple systems in OB associations V: MQ Cen in Crux OB1. \textit{Astrophysics and Space Science}. DORDRECHT: Springer, roč.~364, č.~9, s.~1-10. ISSN~0004-640X. doi:10.1007/s10509-019-3650-9. 2019.
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