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狮子座三胞胎

狮子座三胞胎
狮子座三胞胎:M65(右上),M66(右下)和
NGC 3628(左),北方在左边。影像授权者:Hunter Wilson
观测数据(历元J2000
星座狮子座
赤经11h 17m[1][2]
赤纬+13° 25′[1][2]
最亮的成员M66[1][2]
星系的数量3-5[3][1][2]
其它名称
M66星系群,Arp 317,[4] LGG 231,[1]
NOGG P1 533,[2] NOGG P2 543[2]
参见:星系群星系团星系团列表

狮子座三胞胎 (英语:Leo Triplet)又称狮子座三重星系M66星系群,是离地球约三千五百万光年远的小星系群。该星系群包括螺旋星系M65M66NGC 3628

成员

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下表是在邻近的星系目录中一向被确认的小组成员[3],狮子座星系团(LGG)目录[1],和表中所列的星系是Giuricin等人建立的邻近光学星系样品[2]

狮子座三胞胎的成员
名称 类型[5] R.A. (J2000)[5] Dec. (J2000)[5] 红移 (km/s)[5] 视星等[5]
M65 SAB(rs)a 11h 18m 56.0s +13° 05′ 32″ 807 ± 3 9.3
M66 SAB(s)b 11h 20m 15.0s +12° 59′ 30″ 727 ± 3 8.9
NGC 3628 SAb pec 11h 20m 17.0s +13° 35′ 23″ 843 ± 1 9.5

另外,有些参考资料会将其他邻近的一两个星系也列入小组成员中,NGC 3593经常会被列入,但它并不是集团中的成员。

邻近的集团

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M96星系群在实质上是邻近狮子座三胞胎的集团,但这两个星系群实际上是更大许多的集团中分开的两个部分[6],并且有些团体认为就逻辑上讲狮子座三胞胎是M95星系群的成员[2][7]

相关条目

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外部链接

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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 Garcia, A. M. General study of group membership. II - Determination of nearby groups. Astronomy and Astrophysics Supplement Series. 1993-07-01, 100: 47–90 [2020-09-14]. ISSN 0365-0138. (原始内容存档于2019-12-13). 
  2. ^ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando. Nearby Optical Galaxies: Selection of the Sample and Identification of Groups. The Astrophysical Journal. 2000-11, 543 (1): 178–194 [2021-09-19]. ISSN 0004-637X. doi:10.1086/317070. (原始内容存档于2021-11-05) (英语). 
  3. ^ 3.0 3.1 R. B. Tully. Nearby Galaxies Catalog. Cambridge: Cambridge University Press. 1988. ISBN 0-521-35299-1. 
  4. ^ Arp, Halton. Atlas of Peculiar Galaxies. The Astrophysical Journal Supplement Series. 1966-11, 14: 1 [2021-09-19]. ISSN 0067-0049. doi:10.1086/190147. (原始内容存档于2019-10-01) (英语). 
  5. ^ 5.0 5.1 5.2 5.3 5.4 NASA/IPAC Extragalactic Database. Results for various galaxies. [2006-10-24]. (原始内容存档于2013-06-07). 
  6. ^ Ferrarese,, Laura; Ford, Holland C.; Huchra, John; Kennicutt, Jr., Robert C.; Mould, Jeremy R.; Sakai, Shoko; Freedman, Wendy L.; Stetson, Peter B.; Madore, Barry F. A Database of Cepheid Distance Moduli and Tip of the Red Giant Branch, Globular Cluster Luminosity Function, Planetary Nebula Luminosity Function, and Surface Brightness Fluctuation Data Useful for Distance Determinations. The Astrophysical Journal Supplement Series. 2000-06, 128 (2): 431–459 [2021-09-19]. ISSN 0067-0049. doi:10.1086/313391. (原始内容存档于2021-10-26) (英语). 
  7. ^ Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members. Astronomy and Astrophysics Supplement Series. 1992-05-01, 93: 211–233 [2021-09-19]. ISSN 0365-0138. (原始内容存档于2019-12-13). 
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狮子座三胞胎
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