The second-brightest star in Coma Berenices is the 4.3-magnitude, bluish Alpha Comae Berenices ( 42 Comae Berenices ), with the orbital plane is near the Earth's line of sight, it was long suspected of being an eclipsing binary star.
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? Lib is approximately 300 light years from the Earth and belongs to the spectral class B9.5V . It is an eclipsing binary star, with a period of 2.3272 days . Its apparent magnitude varies from 4.43 m to 5.81 m.
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It is classified as a RS Canum Venaticorum variable, a type of close eclipsing binary star, and varies from an apparent visual magnitude of 9.83 at minimum brightness to a magnitude of 8.97 at maximum brightness, with a period of 0.6289216 days.
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As with the discovery of Kepler-9d, the Kepler team ran the information through numerous models to see if Kepler-11g's light curve could fit the profile of some other object, including an eclipsing binary star in the background that may have contaminated the data.
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In keeping with the pattern of the naming the " Algol "-class ships after bright stars, " Algol " was named after the bright eclipsing binary star Algol, known colloquially as the Demon Star, which is a bright star in the constellation Perseus.
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"' WR 22 "', also known as V429 Carinae or HR 4188, is an eclipsing binary star system in the constellation most luminous stars known, and is also a bright x-ray source due to colliding winds with a less massive O class companion.
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There are several dimmer variable stars in Hercules . 30 Herculis, also called g Herculis, is a Beta Lyrae-type eclipsing binary star . 865 light-years from Earth, it has a period of 2 days; its minimum magnitude is 5.4 and its maximum magnitude is 4.7.
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It was recognized as a potential planet after a study into the system confirmed Kepler-9b and Kepler-9c, but follow-up studies had to be completed to verify that it was indeed a planet, and that the apparent transit event was not due to a background eclipsing binary star in the aperture of Kepler's photometer.
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An animation of the eclipsing binary star "'Algol "', assembled from 55 images of the H-band, sorted according to orbital phase; because some phases are poorly covered, Algol B appears to jump at some points along its path around Algol A . A third star in the system is outside the frame.
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:: : : : Since eclipsing binary stars cause a dimming of the overall brightness of the system when one star passes in front of the other, I'd say that the opacity of fire and plasma are enough as to cause a " shadow " in the way that it blocks some of the light from the other light source . ~ U ) 23 : 34, 13 February 2010 ( UTC)
