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AB7 Excitation Nebula
 

 

 

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Source page: http://commons.wikimedia.org/wiki/File:AB7_Excitation_Nebula.jpg

Summary

Description
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.
Date 2003(2003)
Source http://www.eso.org/gallery/v/ESOPIA/Stars/phot-09a-03.tif.html
Author ESO
Permission
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EXIF data:
File name ab7_excitation_nebula.jpg
Size, bytes 12827227
Mime type image/jpeg
Orientation of image 1
Image resolution in width direction 72/1
Image resolution in height direction 72/1
Unit of X and Y resolution 2
Color space information 1
Exif image width 4961
Exif image length 4956
Software used Adobe Photoshop 7.0
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