SIMBAD references

2011MNRAS.415.1509L - Mon. Not. R. Astron. Soc., 415, 1509-1522 (2011/August-1)

Two extreme contact binary systems in the nearest globular cluster M4.


Abstract (from CDS):

We present the results of photometric solutions for two contact binaries in the nearby globular cluster M4. We estimate their physical parameters using the light-curve program of the Wilson-Devinney code. These systems have quite different mass ratios, which indicates that they did not form at the same time. V47 is an extreme mass-ratio system (q= 0.123 ± 0.002) being dissimilar to the same kind of field contact binaries. V53 is a high mass-ratio (q= 1.230±0.004), deep-contact (f= 79.7 ±1.9 per cent) system. It is also a blue straggler.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): binaries: eclipsing - blue stragglers - stars: evolution - stars: individual: V47 - stars: individual: V53

Simbad objects: 16

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