First photometric solution of a very short period contact binary below the period limit

L. Liu, W. P. Chen, S. B. Qian, R. J. Chuang, L. Q. Jiang, C. S. Lin, H. Y. Hsiao

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The star 1SWASP J022727.03+115641.7 was reported as a contact binary with a period shorter than the empirical limit of such systems. Our study shows the star not to be variable. Instead, it is the nearby star, 2MASS 02272637+1156494, that exhibits variability. The BRI CCD light curves of 2MASS 02272637+1156494 show the system to be a moderate mass ratio (), and shallow contact () W-type contact binary. The masses, radii, and luminosities of the binary components are, respectively, , , , , , and , with an estimated distance pc. These uncertainties mainly come from the errors of the colors used to estimate the temperature of the primary star. A dark spot was introduced on the massive component in the final solution.

Original languageEnglish
Article number111
JournalAstronomical Journal
Volume149
Issue number3
DOIs
StatePublished - 1 Mar 2015

Fingerprint

Dive into the research topics of 'First photometric solution of a very short period contact binary below the period limit'. Together they form a unique fingerprint.

Cite this