NGC 2841

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]
Apparent magnitude (V) 10.1[1]
Characteristics
Type SA(r)b[1]
Apparent size (V) 8′.1 × 3′.5[1]
Other designations
UGC 4966, PGC 26512[1]

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]

Structure

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

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

Wikimedia Commons has media related to NGC 2841.

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 2841. Retrieved 2006-10-04.
  2. "Celestial Atlas". Cseligman. Retrieved 2016-03-01.
  3. 1 2 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.
This article is issued from Wikipedia - version of the 12/2/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.