NGC 669 is an edge-on spiral galaxy[2] with an active galactic nucleus[3] located 200 million light-years away[2] in the constellation Triangulum. NGC 669 was discovered by astronomer Édouard Stephan on November 28, 1883[4] and is a member of Abell 262.[5][6][7][8]

See also

References

  1. ^ a b c d e f g h i j "NASA/IPAC Extragalactic Database". Results for NGC 669. Retrieved 2018-11-16.
  2. ^ a b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-11-17.
  3. ^ "NGC 0669". Retrieved 2018-11-17.
  4. ^ "New General Catalog Objects: NGC 650 - 699". cseligman.com. Retrieved 2018-11-14.
  5. ^ P., Fouque; E., Gourgoulhon; P., Chamaraux; G., Paturel (May 1992). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211. Bibcode:1992A&AS...93..211F. ISSN 0365-0138.
  6. ^ M., Garcia, A. (July 1993). "General study of group membership. II - Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G. ISSN 0365-0138.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  7. ^ Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando (November 2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". The Astrophysical Journal. 543 (1): 178–194. arXiv:astro-ph/0001140. Bibcode:2000ApJ...543..178G. doi:10.1086/317070. ISSN 0004-637X. S2CID 9618325.
  8. ^ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2018-11-17.
Allikas: https://en.wikipedia.org/wiki/NGC_669
No tags for this post.