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NGC 4065星系群

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NGC 4065星系群
SDSS拍攝的NGC 4065星系群
觀測數據(曆元J2000
星座后髮座
赤經12h 04m 09.5s[1][2]
赤緯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]
同移距離100 Mpc(326.2 Mly[1][3]
X射線光度0.05×1042.64 erg/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:星系群星系團星系團列表

NGC 4065星系群是一個位於后髮座星系群[1][2][15],距離地球3.3億光年[3][10],最亮的星系是NGC 4065[4][15][16],屬於后髮座超星系團[7][15][17]。星系群內橢圓星系居多[10][17],百分之15到31的星系是螺旋星系[4][15]

結構

NGC 4065星系群由UZC-CG 156和UZC-CG 157兩個子群組成,它們的速度十分接近,無法區分[3][4]。但是,懷特等人認為星系群由三個子群組成[8][10]。星系群的中央是橢圓星系NGC 4061NGC 4065[4]

附近星系群

NGC 4065星系群位於獅子座星系團附近[3][15],一部分位於獅子座星系團后髮座星系團之間[15][16][18]

另見

參考

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  7. ^ 7.0 7.1 7.2 Burns, Jack O.; Hanisch, Robert J.; White, Richard A.; Nelson, Eric R.; Morrisette, Kim A.; Moody, J. Ward. A VLA 20 CM survey of poor groups of galaxies. The Astronomical Journal. 1987-09-01, 94: 587–617. Bibcode:1987AJ.....94..587B. ISSN 0004-6256. doi:10.1086/114494. 
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外部連結