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Sh2-101
Sharpless 101 (Sh2-101) is a H II region〔http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Sh2-101&submit=SIMBAD+search〕 emission nebula located in the constellation Cygnus. It is sometimes also called the ''Tulip Nebula'' because it appears to resemble the outline of a tulip when imaged photographically. It was catalogued by astronomer Stewart Sharpless in his 1959 catalog of nebulae. It lies at a distance of about from Earth. Sh2-101, at least in the field seen from earth, is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. Cygnus X-1 is the brighter of the two stars (lower star) in close vertical proximity just to the right of Sh2-101 in the image presented here.〔(【引用サイトリンク】url=http://www.astrofoto.ca/john/sh2-101-106.htm )〕 ==See also==
*Sharpless catalogue
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Sh2-101」の詳細全文を読む
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