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File:AB7 Excitation Nebula.jpg

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English: This unique image shows AB7, one of the highest excitation nebulae in the Magellanic Clouds (MCs), two satellite galaxies of our own Milky Way.AB7 is a binary star, consisting of one WR-star - highly evolved massive star - and a mid-age massive companion of spectral type O.

These exceptional stars have very strong stellar winds: they continuously eject energetic particles - like the "solar wind" from the Sun - but some 10 to 1000 million times more intensely than our star! These powerful winds exert an enormous pressure on the surrounding interstellar material and forcefully shape those clouds into "bubbles", well visible in the photos by their blue colour.

AB7 is particularly remarkable: the associated huge nebula and HeII region indicate that this star is one of the, if not THE, hottest WR-star known so far, with a surface temperature in excess of 120,000 degrees!

Just outside this nebula, a small network of green filaments is visible - they are the remains of another supernova explosion.
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Source https://www.eso.org/public/images/eso0310a/
Author ESO
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Date/TimeThumbnailDimensionsUserComment
current20:17, 6 July 2010Thumbnail for version as of 20:17, 6 July 20104,961 × 4,956 (12.23 MB)SupportstormCorrected Levels
07:53, 27 April 2010Thumbnail for version as of 07:53, 27 April 20104,961 × 4,956 (3.46 MB)TryphonOriginal size, from http://www.eso.org/public/images/eso0310a/ (http://www.eso.org/public/archives/images/large/eso0310a.jpg).
15:17, 15 September 2008Thumbnail for version as of 15:17, 15 September 2008800 × 799 (99 KB)Lars Lindberg Christensen{{Information |Description={{en|1=This unique image shows AB7, one of the highest excitation nebulae in the Magellanic Clouds (MCs), two satellite galaxies of our own Milky Way.AB7 is a binary star, consisting of one WR-star - highly evolved massive star

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