NGC 3384
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 | |
|---|---|
 | |
| 觀測資料（J2000 曆元） | |
| 星座 | 獅子座[1] |
| 赤經 | 10h 48m 16.9s[2] |
| 赤緯 | +12° 37′ 46″[2] |
| 紅移 | 704 ± 2 km/s[2] |
| 距離 | 35.1 ± 2.3 Mly (10.8 ± 0.7 Mpc)[3] |
| 視星等 (V) | 10.9[2] |
| 特徵 | |
| 類型 | E7[2] |
| 角直徑 (V) | 5′.5 × 2′.5[2] |
| 其他名稱 | |
| NGC 3371,[2] UGC 5911,[2] PGC 32292[2] | |
星系團的資訊
編輯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有M95、M96和M105。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
編輯參考資料
編輯- ^ 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.
- ^ 2.0 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]. （原始內容存檔於2011-05-14）.
- ^ 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.
- ^ 4.0 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.
- ^ R. B. Tully. Nearby Galaxies Catalog. Cambridge: Cambridge University Press. 1988. ISBN 0-521-35299-1.
- ^ 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.
- ^ 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.
- ^ 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.
