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Sh2-2 (Emission Nebula)


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Sh2-2
Emission Nebula (散光星雲)
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別名 (Other names)

Sharpless 2, Sh 2-2, Gum 57

星座 (Constellation)
さそり座 (Sco) (Scorpius)

座標 (Coordinates)
(347.7°, 1.9°)

距離 (Distance)

Sh2-2 is an emission nebula in the constellation Scorpius.

Sh2-2 (Emission Nebula) : Picture

Sh2-2 (Emission Nebula)
Sh2-2 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
Sh 2-2, also known as Sharpless 2, is an emission nebula in the constellation of Scorpius. It appears as a mid-range brightness making it difficult to view. It is believed to currently host a X-ray binary star that originated and was ejected from the Scorpius OB1 association.

The nebulous area is fairly large with an irregular shape appearing as a H II region. The remnant has an apparent diameter that covers approximately 60'.

(From Wikipedia, the free encyclopedia)

Sh2-2 (Emission Nebula)
Sh2-2 (Emission Nebula)
(C) http://galaxymap.org/
This HII region surrounds the O6.5 Ia supergiant and X-ray eclipsing binary HD 153919. It is seen behind the closer star cluster NGC 6281.

HD 153919 is a runaway star ejected from the Sco OB1 star association in a supernova explosion about 2 million years ago.

Sh2-2 (Emission Nebula)
Sh2-2 (Emission Nebula)
(C) Image by Dean Salman - http://www.sharplesscatalog.com
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