NGC 3384是赫歇爾在1784年發現,位於獅子座的一個橢圓星系。經由顏色的分析,位於星系中心的恆星是年齡最高的。他們中的80%屬於第二星族星,年齡都已在10億歲以上[4]

NGC 3384
NGC 3384
NGC 3384位於左上 (2MASS的近-紅外線影像)
观测资料(J2000 曆元
星座獅子座[1]
赤经10h 48m 16.9s[2]
赤纬+12° 37′ 46″[2]
紅移704 ± 2 km/s[2]
距离35.1 ± 2.3 Mly (10.8 ± 0.7 Mpc)[3]
视星等 (V)10.9[2]
特征
类型E7[2]
角直徑 (V)5′.5 × 2′.5[2]
其他名称
NGC 3371,[2] UGC 5911,[2] PGC 32292[2]
參見:星系星系列表

星系團的資訊

NGC 3384是M96星系團的一員。,這個星系團位於獅子座,有時也被稱為獅子座 I[4]。這個集團包含的梅西爾天體M95M96M105。所有的這些天體在天空中彼此都非常接近[5][6][7][8]

外部連結

參考資料

  1. ^ R. W. Sinnott, editor. The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press. 1988. ISBN 0-933-34651-4. 
  2. ^ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 NASA/IPAC Extragalactic Database. Results for NGC 3384. [2006-10-12]. (原始内容存档于2011-05-14). 
  3. ^ Jensen, Joseph B.; Tonry, John L.; Barris, Brian J.; Thompson, Rodger I.; Liu, Michael C.; Rieke, Marcia J.; Ajhar, Edward A.; Blakeslee, John P. Measuring Distances and Probing the Unresolved Stellar Populations of Galaxies Using Infrared Surface Brightness Fluctuations. Astrophysical Journal. February 2003, 583 (2): 712–726. Bibcode:2003ApJ...583..712J. arXiv:astro-ph/0210129 . doi:10.1086/345430. 
  4. ^ 4.0 4.1 Attia, Abdel-Fattah; Ismail, H. A.; Selim, I. M.; Osman, A. M.; Isaa, I. A.; Marie, M. A.; Shaker, A. A. Stellar Population Analysis of Galaxies based on Genetic Algorithms. Chinese Journal of Astronomy and Astrophysics. August 2005, 5 (4): 347–355. Bibcode:2005ChJAA...5..347A. doi:10.1088/1009-9271/5/4/002. 
  5. ^ R. B. Tully. Nearby Galaxies Catalog. Cambridge: Cambridge University Press. 1988. ISBN 0-521-35299-1. 
  6. ^ P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel. Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members. Astronomy and Astrophysics Supplement. 1992, 93: 211–233. Bibcode:1992A&AS...93..211F. 
  7. ^ A. Garcia. General study of group membership. II - Determination of nearby groups. Astronomy and Astrophysics Supplement. 1993, 100: 47–90. Bibcode:1993A&AS..100...47G. 
  8. ^ G. Giuricin, C. Marinoni, L. Ceriani, A. Pisani. Nearby Optical Galaxies: Selection of the Sample and Identification of Groups. Astrophysical Journal. 2000, 543 (1): 178–194. Bibcode:2000ApJ...543..178G. arXiv:astro-ph/0001140 . doi:10.1086/317070.