NGC 7793

NGC 7793
NGC 7793
	NGC 7793是史匹哲太空望遠鏡的史匹哲紅外鄰近星系巡天觀測的目標之一。藍色是來自恆星的3.6微米輻射；綠色和紅色是來自多環芳烴和可能是塵埃的5.8和8.0微米輻射。
观测资料（J2000 曆元）
星座	玉夫座
赤经	23h 57m 49.8s
赤纬	-32° 35′ 28″
紅移	227 ± 2 km/s
距离	12.7 ± 1.3 百万光年 (3.9 ± 0.4 百万秒差距)
视星等 (V)	10.0
特征
类型	SA(s)d
角直徑 (V)	9′.3 × 6′.3
其他名称
	PGC 73049
	參見：星系、星系列表

NGC 7793是在玉夫座的一個螺旋星系，距離大約1270萬光年，是James Dunlop在1826年發現的^[5]。

星系群的資料

NGC 7793是玉夫座星系群，與玉夫座有相同名稱的星系群，中最明亮的星系之一。這個集團本身是瘦長且鬆散的，以玉夫座星系（NGC 253）為中心，和鄰近的星系形成一個緊密綁定的星系群核心^[2]。

超新星2008bk

在2008年3月25日，在NGC 7793發現SN 2008bk^[6]，視星等12.5等，是2008年第二亮的超新星^[7]。

在外側旋臂的黑洞

在這個星系外側的旋臂有一個如同太陽般大小的黑洞，有著壯觀的噴流^[8]。

參考資料

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 NASA/IPAC Extragalactic Database. Results for NGC 7793. [2006-11-21]. （原始内容存档于2019-10-18）.
^ ^2.0 ^2.1 I. D. Karachentsev, E. K. Grebel, M. E. Sharina, A. E. Dolphin, D. Geisler, P. Guhathakrta, P. W. Hodge, V. E. Karachentseva, A. Sarajedini, P. Seitzer. Distances to nearby galaxies in Sculptor. Astronomy and Astrophysics. 2003, 404 (1): 93–111. Bibcode:2003A&A...404...93K. arXiv:astro-ph/0302045  . doi:10.1051/0004-6361:20030170.
^ I. D. Karachentsev, V. E. Karachentseva, W. K. Hutchmeier, D. I. Makarov. A Catalog of Neighboring Galaxies. Astronomical Journal. 2004, 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.
^ Karachentsev, I. D.; Kashibadze, O. G. Masses of the local group and of the M81 group estimated from distortions in the local velocity field. Astrophysics. 2006, 49 (1): 3–18. Bibcode:2006Ap.....49....3K. doi:10.1007/s10511-006-0002-6.
^ Dunlop James. A Catalogue of Nebulae and Clusters of Stars in the Southern Hemisphere observed in New South Wales. Philosophical Transactions of the Royal Society. 1828, 118: 113–151. Bibcode:1828RSPT..118..113D. JSTOR 107841. doi:10.1098/rstl.1828.0010.
^ David Bishop. Supernova 2008bk in NGC 7793. supernovae.net (International Supernovae Network). [2010-06-07]. （原始内容存档于2011-09-27）.
^ David Bishop. Bright Supernovae - 2008. supernovae.net (International Supernovae Network). [2010-06-07]. （原始内容存档于2011-09-27）.
^ Black hole emitting a giant gas bubble 1000 light-years wide. [2014-03-18]. （原始内容存档于2014-02-26）.

外部連結

SST: NGC 7793

[ned-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 NASA/IPAC Extragalactic Database. Results for NGC 7793. [2006-11-21]. （原始内容存档于2019-10-18）.

[karachentsevetal2003-2] 2.0 ^2.1 I. D. Karachentsev, E. K. Grebel, M. E. Sharina, A. E. Dolphin, D. Geisler, P. Guhathakrta, P. W. Hodge, V. E. Karachentseva, A. Sarajedini, P. Seitzer. Distances to nearby galaxies in Sculptor. Astronomy and Astrophysics. 2003, 404 (1): 93–111. Bibcode:2003A&A...404...93K. arXiv:astro-ph/0302045  . doi:10.1051/0004-6361:20030170.

[karachentsevetal2004-3] I. D. Karachentsev, V. E. Karachentseva, W. K. Hutchmeier, D. I. Makarov. A Catalog of Neighboring Galaxies. Astronomical Journal. 2004, 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.

[Karachentsevetal2006-4] Karachentsev, I. D.; Kashibadze, O. G. Masses of the local group and of the M81 group estimated from distortions in the local velocity field. Astrophysics. 2006, 49 (1): 3–18. Bibcode:2006Ap.....49....3K. doi:10.1007/s10511-006-0002-6.

[5] Dunlop James. A Catalogue of Nebulae and Clusters of Stars in the Southern Hemisphere observed in New South Wales. Philosophical Transactions of the Royal Society. 1828, 118: 113–151. Bibcode:1828RSPT..118..113D. JSTOR 107841. doi:10.1098/rstl.1828.0010.

[SN2008bk-6] David Bishop. Supernova 2008bk in NGC 7793. supernovae.net (International Supernovae Network). [2010-06-07]. （原始内容存档于2011-09-27）.

[supernovae2008-7] David Bishop. Bright Supernovae - 2008. supernovae.net (International Supernovae Network). [2010-06-07]. （原始内容存档于2011-09-27）.

[8] Black hole emitting a giant gas bubble 1000 light-years wide. [2014-03-18]. （原始内容存档于2014-02-26）.

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