NGC 2841

From Wikipedia, the free encyclopedia

Coordinates: 9h 22m 02.6s, +50° 58′ 35″

NGC 2841

Infrared image derived from data taken by the Spitzer Space Telescope.
Observation data (J2000 epoch)
Constellation Ursa Major
Right ascension 9h 22m 02.6s[1]
Declination +50° 58′ 35″[1]
Redshift 638 ± 3 km/s[1]
Type SA(r)b[1]
Apparent dimensions (V) 8′.1 × 3′.5[1]
Apparent magnitude (V) 10.1[1]
Other designations
UGC 4966, PGC 26512[1]
See also: Galaxy, List of galaxies

NGC 2841 is an inclined unbarred spiral galaxy in the constellation Ursa Major. Initially thought to be about 30 million light years distant, a 2001 Hubble Space Telescope survey of the galaxy's Cepheid variables determined that it was approximately 14.1 megaparsecs or 46 million light years distant.[2]

Structure

Structurally, NGC 2841 is a giant spiral galaxy with properties similar to those of the Andromeda Galaxy.[2] It is a prototypical flocculent spiral galaxy, a type of spiral galaxy whose arms are patchy and discontinuous.[3]

NGC 2841 is also noted for its large population of young blue stars, and few H II regions.[4]

  • Amateur Image of NGC 2841.

  • Hubble image of NGC 2841.

LINER emission

NGC 2841 contains a low-ionization nuclear emission-line region (LINER), a type of region that is characterized by spectral line emission from weakly ionized atoms.[5]


See also

Wikimedia Commons has media related to NGC 2841.


References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "NASA/IPAC Extragalactic Database". Results for NGC 2841. Retrieved 2006-10-04. 
  2. ↑ 2.0 2.1 Macri, L. M.; Stetson, P. B.; Bothun, G. D.; Freedman, W. L.; Garnavich, P. M.; Jha, S.; Madore, B. F.; Richmond, M. W. (September 2001). "The Discovery of Cepheids and a New Distance to NGC 2841 Using the Hubble Space Telescope". Astrophysical Journal (University of Chicago Press) 559 (1): 243–259. arXiv:astro-ph/0105491. Bibcode:2001ApJ...559..243M. doi:10.1086/322395. ISSN 0004-637X. 
  3. ↑ "A Near-Infrared Atlas of Spiral Galaxies", Debra Meloy Elmegreen, "CH3. Discussion" (accessed 23 April 2010)
  4. ↑ Marochnik, Leonid; Suchkov, Anatoly (1995-11-01). Milky Way Galaxy (1st ed.). Routledge. p. 267. ISBN 2-88124-931-0. 
  5. ↑ L. C. Ho, A. V. Filippenko, W. L. W. Sargent (1997). "A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies". Astrophysical Journal Supplement 112 (2): 315–390. arXiv:astro-ph/9704107. Bibcode:1997ApJS..112..315H. doi:10.1086/313041. 


This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.