NGC 4274

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NGC 4274
Ngc4274-hst-555.png
NGC 4274 imaged by Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Coma Berenices
Right ascension 12h 19m 50.5963s [1]
Declination +29° 36′ 52.912″ [1]
Redshift 0.003102±0.0000230 [1]
Heliocentric radial velocity 930±7 km/s [1]
Distance 45.37 ± 4.66  Mly (13.911 ± 1.429  Mpc) [1]
Group or cluster NGC 4274 group (LGG 279)
Apparent magnitude  (V)10.4 [2]
Characteristics
Type (R)SB(r)ab [1]
Size~99,000  ly (30.35  kpc) (estimated) [1]
Apparent size  (V)6.8′ × 2.5′ [1]
Other designations
IRAS 12173+2953, 2MASX J12195066+2936529, UGC 7377, MCG +05-29-060, PGC 39724, CGCG 158-071 [1]

NGC 4274 is a barred spiral galaxy located in the constellation Coma Berenices. It is located at a distance of about 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 German-British astronomer William Herschel on 13 March 1785. [3]

Contents

Characteristics

NGC 4274 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms. [4] [2]

NGC 4274 is characterised by its overlapping outer arms, forming a ring structure with apparent diameter 2.8′. The inner arms begin near the edge of the bulge and they are bright and dusty, with dust lanes that are more prominent at the near side. Outside the near-ring a set of fainter outer arms has been detected. [5] These outer arms also form a ring, with diameter 5.9′. A third rings exists near the nucleus. [6] The nuclear ring has semimajor axis 9", which corresponds to 680 parsec at that distance. [7]

The bar of the galaxy is 5 kpc long. [7] The galaxy features a nuclear bar that is almost perpendicular to the outer bar. [8] [9]

Supernova

One supernova has been observed in NGC 4274:

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. [12] It is part of the Coma I Group which is part of the Virgo Supercluster. [13]

References

  1. 1 2 3 4 5 6 7 8 9 "NASA/IPAC Extragalactic Database". Results for NGC 4274. Retrieved 2016-01-18.
  2. 1 2 "NGC 4274". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2017-06-19.
  3. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4274". Celestial Atlas. Retrieved 27 December 2025.
  4. ↑ Véron-Cetty, M.-P.; Véron, P. (2006). "A catalogue of quasars and active nuclei: 12th edition". Astronomy and Astrophysics. 455 (2): 773. Bibcode:2006A&A...455..773V. doi:10.1051/0004-6361:20065177.
  5. ↑ Sandage, A.; Bedke, J. (1994). The Carnegie Atlas of Galaxies. Volume I. Carnegie Institution of Washington.
  6. ↑ 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. S2CID   119295831 . Retrieved 19 July 2017.
  7. 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 . S2CID   18376628.
  8. ↑ 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 . S2CID   9588925.
  9. ↑ 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. S2CID   12717503.
  10. ↑ Hurst, G. M.; Boles, T.; Armstrong, M.; Schwartz, M.; Garnavich, P.; Jha, S.; Kirshner, R.; Berlind, P.; Holman, M. (1999). "Supernova 1999ev in NGC 4274". International Astronomical Union Circular (7306): 1. Bibcode:1999IAUC.7306....1H.
  11. ↑ "SN 1999ev". Transient Name Server. IAU . Retrieved 27 December 2025.
  12. ↑ 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 . S2CID   119194025.
  13. ↑ 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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