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File:Algol AB movie imaged with the CHARA interferometer.gif

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Algol_AB_movie_imaged_with_the_CHARA_interferometer.gif (340 × 340 pixels, file size: 405 KB, MIME type: image/gif, looped, 55 frames, 3.0 s)

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English: Algol (β Persei) is a triple-star system (Algol A, B, and C) in the constellation Perseus, in which the large and bright primary Algol A is regularly eclipsed by the dimmer Algol B every 2.87 days. The eclipsing binary pair is separated by only 0.062 astronomical units (AU) from each other, so close in fact that Algol A is slowly consuming the less massive Algol B by continually stripping off Algol B's outer layers. This animation was assembled from 55 images of the CHARA interferometer in the near-infrared H-band, sorted according to orbital phase. Because some phases are poorly covered, B jumps at some points along its path. The images vary in quality, but the best have a resolution of 0.5 milliarcseconds, or approximately 200 times better than the Hubble Space Telescope. (A milliarcsecond is about the size of a quarter atop the Eiffel Tower as seen from New York City.) Tidal distortions of Algol B giving it an elongated appearance are readily apparent. Tidal distortions also result in "gravity darkening" effects, whereby in a significant number of images of Algol B, the edge or "limb" of the image is actually brighter than the center. (Baron et al., 2012)
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Source http://www.oculum.de/newsletter/astro/100/60/2/2-02_algol_movie.gif, http://www.oculum.de/newsletter/astro/100/60/2/162.fa1cn.asp
Author Dr Fabien Baron, Dept. of Astronomy, University of Michigan, Ann Arbor, MI 48109-1090
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Media of the day This file was selected as the media of the day for 12 March 2014. It was captioned as follows:
English: Algol (β Persei) is a triple-star system (Algol A, B, and C) in the constellation Perseus, in which the large and bright primary Algol A is regularly eclipsed by the dimmer Algol B every 2.87 days. The eclipsing binary pair is separated by only 0.062 astronomical units (AU) from each other, so close in fact that Algol A is slowly consuming the less massive Algol B by continually stripping off Algol B's outer layers. This animation was assembled from 55 images of the CHARA interferometer in the near-infrared H-band, sorted according to orbital phase.
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English: Algol (β Persei) is a triple-star system (Algol A, B, and C) in the constellation Perseus, in which the large and bright primary Algol A is regularly eclipsed by the dimmer Algol B every 2.87 days. The eclipsing binary pair is separated by only 0.062 astronomical units (AU) from each other, so close in fact that Algol A is slowly consuming the less massive Algol B by continually stripping off Algol B's outer layers. This animation was assembled from 55 images of the CHARA interferometer in the near-infrared H-band, sorted according to orbital phase.
中文（简体）：大陵五是英仙座的一个三星系统

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Date/TimeThumbnailDimensionsUserComment
current08:45, 4 October 2012Thumbnail for version as of 08:45, 4 October 2012340 × 340 (405 KB)Stigmatella aurantiaca (talk | contribs)Decreased file size
08:24, 4 October 2012Thumbnail for version as of 08:24, 4 October 2012340 × 340 (2.37 MB)Stigmatella aurantiaca (talk | contribs){{Information |Description ={{en|1=Algol B orbits Algol A. This animation was assembled from 55 images of the CHARA interferometer in the near-infrared H-band, sorted according to orbital phase. Because some phases are poorly covered, B jumps at som...

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