NGC 2841

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

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

NGC 2841
NGC2841 3.6 5.8 8.0 microns spitzer.png
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]
Apparent magnitude (V) 10.1[1]
Type SA(r)b, LINER[1]
Apparent size (V) 8′.1 × 3′.5[1]
Other designations
UGC 4966, PGC 26512[1]
See also: Galaxy, List of galaxies

NGC 2841 is an inclined unbarred spiral galaxy exhibiting a prominent inner ring structure in the constellation Ursa Major, it was discovered on 9 March 1788 by William Herschel.[2] 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.[3]


NGC 2841 is a giant spiral galaxy with properties similar to those of the Andromeda Galaxy.[3] It is a prototypical flocculent spiral galaxy, a type of spiral galaxy whose arms are patchy and discontinuous.[4]

NGC 2841 is home to large population of young blue stars, and few H II regions.[5]

Hubble image of NGC 2841.

LINER emission[edit]

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.[6]

See also[edit]


  1. ^ a b c d e f g "NASA/IPAC Extragalactic Database". Results for NGC 2841. Retrieved 2006-10-04. 
  2. ^ "Celestial Atlas". Cseligman. Retrieved 2016-03-01. 
  3. ^ a b Macri, L. M.; Stetson, P. B.; Bothun, G. D.; Freedman, W. L.; et al. (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/0105491Freely accessible. Bibcode:2001ApJ...559..243M. doi:10.1086/322395. ISSN 0004-637X. 
  4. ^ "A Near-Infrared Atlas of Spiral Galaxies", by Debra Meloy Elmegreen, "CH3. Discussion" (accessed 23 April 2010)
  5. ^ Marochnik, Leonid; Suchkov, Anatoly (1995-11-01). Milky Way Galaxy (1st ed.). Routledge. p. 267. ISBN 2-88124-931-0. 
  6. ^ 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/9704107Freely accessible. Bibcode:1997ApJS..112..315H. doi:10.1086/313041.