NGC 4274

NGC 4274
Observation data (J2000 epoch)
Constellation Coma Berenices
Right ascension 12h 19m 50.6s[1]
Declination 29° 36′ 52″[1]
Redshift 930 ± 7 km/s[1]
Distance 45 ± 15 Mly (13.9 ± 4.6 Mpc)[1]
Apparent magnitude (V) 10.4[2]
Characteristics
Type (R)SB(r)ab [1]
Apparent size (V) 6′.8 × 2′.5[1]
Other designations
UGC 7377, MCG +05-29-060, PGC 39724[1]

NGC 4274 is a barred spiral galaxy located in the constellation Coma Berenices. It is located at a distance of circa 45 million light years from Earth, which, given its apparent dimensions, means that NGC 4274 is about 95,000 light years across. It was discovered by William Herschel in 1785.

Characteristics

NGC 4274 is characterised by its overlapping outern arms, forming a ring structure with apparent diametre 2′.8. The inner arms begin near the edge of the bulge and they are bright and dusty, with dust lanes that more prominent at the near side. Outside the near-ring a set of fainter outer arms has been detected.[3] These outer arms also form a ring, with diametre 5′.9. A third rings exists near the nucleus.[4] The nuclear ring has semimajor axis 9", which corresponds to 680 parsec at that distance.[5]

The bar of the galaxy is 5 kpc long.[5] The galaxy features a nuclear bar that is almost perpendicular to the outer bar.[6][7]

Supernova

One supernova has been observed in NGC 4274, SN 1999ev. It was a type II supernova, discovered by Tom Boles on 7 November 1999. It peaked at magnitude 15.2.[8]

Nearby galaxies

NGC 4274 is the foremost member of a galaxy group known as NGC 4274 group. Other members of the group are NGC 4173, NGC 4245, NGC 4251, NGC 4283, IC 3215, NGC 4310, and NGC 4314.[9] It is part of the Coma I Group which is part of the Virgo Supercluster.[10]

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 4274. Retrieved 2016-01-18.
  2. ↑ "NGC 4274". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-06-19.
  3. ↑ Sandage, A.; Bedke, J. (1994). The Carnegie Atlas of Galaxies. Volume I. Carnegie Institution of Washington.
  4. ↑ Comerón, S.; Salo, H.; Laurikainen, E.; Knapen, J. H.; Buta, R. J.; Herrera-Endoqui, M.; Laine, J.; Holwerda, B. W.; Sheth, K.; Regan, M. W.; Hinz, J. L.; Muñoz-Mateos, J. C.; Gil de Paz, A.; Menéndez-Delmestre, K.; Seibert, M.; Mizusawa, T.; Kim, T.; Erroz-Ferrer, S.; Gadotti, D. A.; Athanassoula, E.; Bosma, A.; Ho, L. C. (19 February 2014). "ARRAKIS: atlas of resonance rings as known in the S4G". Astronomy & Astrophysics. 562: A121. arXiv:1312.0866. Bibcode:2014A&A...562A.121C. doi:10.1051/0004-6361/201321633. Retrieved 19 July 2017.
  5. 1 2 Comerón, S.; Knapen, J. H.; Beckman, J. E.; Laurikainen, E.; Salo, H.; Martínez-Valpuesta, I.; Buta, R. J. (March 2010). "AINUR: Atlas of Images of NUclear Rings". Monthly Notices of the Royal Astronomical Society. 402 (4): 2462–2490. arXiv:0908.0272. Bibcode:2010MNRAS.402.2462C. doi:10.1111/j.1365-2966.2009.16057.x.
  6. ↑ Shaw, M.; Axon, D.; Probst, R.; Gatley, I. (15 May 1995). "Nuclear bars and blue nuclei within barred spiral galaxies". Monthly Notices of the Royal Astronomical Society. 274 (2): 369–387. arXiv:astro-ph/9412057. Bibcode:1995MNRAS.274..369S. doi:10.1093/mnras/274.2.369.
  7. ↑ Erwin, Peter (13 February 2004). "Double-barred galaxies". Astronomy & Astrophysics. 415 (3): 941–957. arXiv:astro-ph/0310806. Bibcode:2004A&A...415..941E. doi:10.1051/0004-6361:20034408.
  8. ↑ "Supernova 1999ev in NGC 4274". www.rochesterastronomy.org. Retrieved 19 July 2017.
  9. ↑ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z∼ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv:1011.6277. Bibcode:2011MNRAS.412.2498M. doi:10.1111/j.1365-2966.2010.18071.x.
  10. ↑ Gregory, Stephen A.; Thompson, Laird A. (April 1977). "The Coma i Galaxy Cloud". The Astrophysical Journal. 213: 345–350. Bibcode:1977ApJ...213..345G. doi:10.1086/155160. ISSN 0004-637X.
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