NGC 4065星系群
NGC 4065星系群是一个位于后发座的星系群[1][2][15],距离地球3.3亿光年[3][10],最亮的星系是NGC 4065[4][15][16],属于后髮座超星系團[7][15][17]。星系群内椭圆星系居多[10][17],百分之15到31的星系是螺旋星系[4][15]。
NGC 4065星系群 | |
---|---|
SDSS拍摄的NGC 4065星系群 | |
觀測數據(曆元J2000) | |
星座 | 后发座 |
赤经 | 12h 04m 09.5s[1][2] |
赤纬 | 20° 13′ 18″[1][2] |
最亮的成員 | NGC 4065 |
星系的數量 | 74[3][4][5] |
離散速度 | 416 ± 35 km/s[3][4][5] |
紅移 | 0.023500 (7045 km/s)[1] |
同移距离 | 100 Mpc(326.2 Mly)[1][3] |
X射線光度 | ×1042.64 0.05erg/s[4][6] |
其它名稱 | |
GH 98,[2][3][4][7][8] N79-299a, N79-299b,[1][2][7][8][9] WBL 374,[8][10] ZW 1202.0+2028,[8][9] USGC U451,[4][11][12] NRGb 177,[5][13] RASSCALS NRGb 177[3][4][14] | |
參見:星系群、星系团、星系團列表 | |
结构
NGC 4065星系群由UZC-CG 156和UZC-CG 157两个子群组成,它们的速度十分接近,无法区分[3][4]。但是,怀特等人认为星系群由三个子群组成[8][10]。星系群的中央是椭圆星系NGC 4061和NGC 4065[4]。
参考
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- Gregory, S. A.; Thompson, L. A. . The Astrophysical Journal. June 1978, 222: 784 [2022-06-29]. Bibcode:1978ApJ...222..784G. ISSN 0004-637X. doi:10.1086/156198. (原始内容存档于2017-09-23) (英语).
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