SIMBAD references

2002AJ....124.1060Q - Astron. J., 124, 1060-1063 (2002/August-0)

YY Geminorum: a very late type close binary with possible magnetic stellar wind.


Abstract (from CDS):

The O-C curve of the very late type close binary (dM1e+dM1e) YY Geminorum is formed and analyzed based on all available times of minimum light. It is found that the orbital period shows a secular decrease with rate dP/dt=-1.08x10–8 days.yr–1. There is weak evidence indicating that a small-amplitude period oscillation is superposed on the period decrease. YY Gem is a well-detached eclipsing binary containing two very active components. The secular period decrease may suggest that the system is undergoing secular mass and angular momentum loss via a magnetic stellar wind. If the small-amplitude oscillation is real, it can be explained either by magnetic activity cycles or by the presence of a giant planet or brown dwarf.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Close - Stars: Individual: Constellation Name: YY Geminorum - Stars: Mass Loss

Status at CDS:  

Simbad objects: 7

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