SIMBAD references

2015AJ....149..111L - Astron. J., 149, 111 (2015/March-0)

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

LIU L., CHEN W.P., QIAN S.B., CHUANG R.J., JIANG L.Q., LIN C.S. and HSIAO H.Y.

Abstract (from CDS):

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 (2.154–0.074+0.008), and shallow contact (10.4–1.9+1.4%) W-type contact binary. The masses, radii, and luminosities of the binary components are, respectively, M1 = 0.25–0.01+0.05M, M2 = 0.54–0.04+0.11M, R1 = 0.45–0.01+0.02R, R2 = 0.63–0.02+0.04, L1 = 0.038–0.005+0.018L, and L2 = 0.071–0.010+0.037L, with an estimated distance 326–46+127 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.

Abstract Copyright:

Journal keyword(s): binaries: close - binaries: eclipsing - stars: evolution - stars: individual: 2MASS J02272637+1156494

VizieR on-line data: <Available at CDS (J/AJ/149/111): table1.dat>

Simbad objects: 9

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2021.01.20-03:07:06

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