Sentences with phrase «background eclipsing binaries»
The reason is simple statistics: It's extremely unlikely to encounter two background eclipsing binaries (or one background binary and one genuine planet) at the same location.
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Next they ruled out a false positive, usually caused by an eclipsing binary - star system in the background, with two relatively small telescopes on the ground, which offer better spatial resolution than COROT does.
An eclipse within the background binary would mimic a small brightness dip in Kepler - 20.
But other observations need to confirm the true planetary nature of these candidate events, because the observed dips may also be due to an eclipsing binary star in the background whose light blends with the foreground star studied by Kepler.
This goal requires knowledge of the incidence of false positives such as eclipsing binaries in the background of the targets, or physically bound to them, which can mimic the photometric signal of a transiting planet.
A blend may consist of a background or foreground eclipsing binary (or star - planet pair) whose eclipses are attenuated by the light of the candidate and possibly other stars within the photometric aperture.