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NGC 2841

NGC 2841
哈伯太空望远镜拍摄的NGC 2841
观测资料(J2000 历元
星座大熊座
赤经9h 22m 02.6s[1]
赤纬+50° 58′ 35″[1]
红移638 ± 3 km/s[1]
视星等 (V)10.1[1]
特征
类型SA(r)b[1]
角直径 (V)8′.1 × 3′.5[1]
其他名称
UGC 4966, PGC 26512[1]
参见:星系星系列表

NGC 2841 是位于大熊座的一个螺旋星系。最初认为它距离太阳系大约3000万光年远,2001年天文学家通过哈勃太空望远镜对该星系的造父变星进行研究确定它的实际距离为14.1百万秒差距(4600万光年)[2]。从结构上看,NGC 2841的最大特征是含有大量年轻的蓝色恒星,而电离氢区很少[3]

NGC 2841包含一个低电离核发射线区(Low-ionization nuclear emission-line region,LINER),这是弱离子原子发射谱线区域的特征[4]

NGC 2841的原始照片

参见

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参考资料

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  1. ^ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 NASA/IPAC Extragalactic Database. Results for NGC 2841. [2006-10-04]. (原始内容存档于2011-05-14). 
  2. ^ Macri, L. M.; Stetson, P. B.; Bothun, G. D.; Freedman, W. L.; Garnavich, P. M.; Jha, S.; Madore, B. F.; Richmond, M. W. The Discovery of Cepheids and a New Distance to NGC 2841 Using the Hubble Space Telescope. Astrophysical Journal (University of Chicago Press). September 2001, 559 (1): 243–259. Bibcode:2001ApJ...559..243M. ISSN 0004-637X. doi:10.1086/322395. 
  3. ^ Marochnik, Leonid; Suchkov, Anatoly. Milky Way Galaxy 1st. Routledge. 1995-11-01: 267. ISBN 2881249310. 
  4. ^ L. C. Ho, A. V. Filippenko, W. L. W. Sargent. A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies. Astrophysical Journal Supplement. 1997, 112: 315–390 [2010-08-19]. doi:10.1086/313041. (原始内容存档于2007-03-22). 
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NGC 2841
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