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Really Hot Stars

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 1,000 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.

Credit:

ESO

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About the Image

Id:eso0310a
Language:en-ie
Type:Observation
Release date:9 April 2003
Related releases:eso0310
Size:4961 x 4956 px

About the Object

Name:LHA 115-N 76A
Type:• Local Universe : Star : Grouping : Binary
• Local Universe : Nebula
• X - Nebulae
Distance:180000 light years
Constellation:Tucana

Image Formats

Large JPEG
3.5 MB
Screensize JPEG
360.6 KB

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Wallpapers

1024x768
295.1 KB
1280x1024
473.5 KB
1600x1200
593.7 KB
1920x1200
606.9 KB
2048x1536
771.8 KB

Coordinates

Position (RA):1 3 48.92
Position (Dec):-72° 3' 51.42"
Field of view:6.57 x 6.57 arcminutes
Orientation:North is 0.1° left of vertical
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Colours & filters

BandTelescope
Optical
HeIII
Very Large Telescope
FORS1
Optical
OIII
Very Large Telescope
FORS1
Optical
H-I
Very Large Telescope
FORS1

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