AB7
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Tucana IAU.svg
Författare/Upphovsman: IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg), Licens: CC BY 3.0
IAU Tucana chart
Författare/Upphovsman: IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg), Licens: CC BY 3.0
IAU Tucana chart
LHA 115 - N 76A - Eso0310a.jpg
Författare/Upphovsman: ESO, Licens: CC BY 4.0
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.
Författare/Upphovsman: ESO, Licens: CC BY 4.0
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
About the Object
Name: LHA 115-N 76A Type: • Local Universe : Star : Grouping : Binary • Local Universe : Nebula • Nebulae Distance: 180000 light years
Colours & filters
Band Telescope Optical HeIII Very Large Telescope FORS1 Optical OIII Very Large Telescope FORS1 Optical H-I Very Large Telescope FORS1.
Supernovae as initial mass-metallicity.svg
Författare/Upphovsman: Fulvio314, Licens: CC BY-SA 3.0
Supernovae types as a function of initial mass and initial content of elements heavier than helium (metallicity)
Författare/Upphovsman: Fulvio314, Licens: CC BY-SA 3.0
Supernovae types as a function of initial mass and initial content of elements heavier than helium (metallicity)