SIMBAD references

2018AJ....155..168L - Astron. J., 155, 168-168 (2018/April-0)

Photometric solutions of three eclipsing binary stars observed from Dome A, Antarctica.

LIU N., FU J.N., ZONG W., WANG L.Z., UDDIN S.A., ZHANG X.B., ZHANG Y.P., CANG T.Q., LI G., YANG Y., YANG G.C., MOULD J. and MORRELL N.

Abstract (from CDS):

Based on spectroscopic observations for the eclipsing binaries CSTAR 036162 and CSTAR 055495 with the WiFeS/2.3 m telescope at SSO and CSTAR 057775 with the Mage/Magellan I at LCO in 2017, stellar parameters are derived. More than 100 nights of almost-continuous light curves reduced from the time-series photometric observations by CSTAR at Dome A of Antarctic in i in 2008 and in g and r in 2009, respectively, are applied to find photometric solutions for the three binaries with the Wilson-Devinney code. The results show that CSTAR 036162 is a detached configuration with the mass ratio q = 0.354 ± 0.0009, while CSTAR 055495 is a semi-detached binary system with the unusual q = 0.946 ± 0.0006, which indicates that CSTAR 055495 may be a rare binary system with mass ratio close to one and the secondary component filling its Roche Lobe. This implies that a mass-ratio reversal has just occurred and CSTAR 055495 is in a rapid mass-transfer stage. Finally, CSTAR 057775 is believed to be an A-type W UMa binary with q = 0.301 ± 0.0008 and a fill-out factor of f = 0.742(8).

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: eclipsing - stars: individual: (CSTAR 036162, CSTAR 055495, CSTAR 057775)

Simbad objects: 5

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