NGC 4414

NGC 4414 is an unbarred spiral galaxy about 62 million light-years away in the constellation Coma Berenices. It is a flocculent spiral galaxy, with short segments of spiral structure but without the dramatic well-defined spiral arms of a grand design spiral. Four supernovae have been observed in this galaxy: SN 1974G (type I, mag. 13),[3] SN 2013df (type II, mag. 14),[4] SN 2021J (type Ia, mag. 12),[5] and SN 2023hlf (type II, mag. 17.8).[6]

NGC 4414
as observed by the Hubble Space Telescope (HST)
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension12h 26m 27.1s[1]
Declination+31° 13′ 25″[1]
Redshift716 ± 6 km/s[1]
Distance62.3 Mly[2]
Apparent magnitude (V)11.0[1]
Characteristics
TypeSA(rs)c[1]
Apparent size (V)3.6′ × 2.0′[1]
Other designations
UGC 7539,[1] PGC 40692[1]

It was imaged by the Hubble Space Telescope in 1995, as part of the HST's main mission to determine the distance to galaxies, and again in 1999 as part of the Hubble Heritage project. It has been part of an ongoing effort to study its Cepheid variable stars. The outer arms appear blue due to the continuing formation of young stars and include a possible luminous blue variable with an absolute magnitude of −10.[7]

NGC 4414 is also a very isolated galaxy without signs of past interactions with other galaxies[8] and despite not being a starburst galaxy shows a high density and richness of gas – both atomic and molecular, with the former extending far beyond its optical disk.[9]

NGC 4414 is a member of the Coma I Group, a group of galaxies lying physically close to the Virgo Cluster.[10][11]

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 4414. Retrieved 25 November 2006.
  2. Rand, Richard J.; Wallin, John F. (2004). "Pattern Speeds BIMA-SONG Galaxies with Molecule-Dominated ISMs Using the Tremaine-Weinberg Method". Astrophys. J. 614 (1): 142–157. arXiv:astro-ph/0406426. Bibcode:2004ApJ...614..142R. doi:10.1086/423423. S2CID 17095983.
  3. Transient Name Server entry for SN 1974G. Retrieved 5 January 2023.
  4. Transient Name Server entry for SN 2013df. Retrieved 5 January 2023.
  5. Transient Name Server entry for SN 2021J. Retrieved 5 January 2023.
  6. Transient Name Server entry for SN 2023hlf. Retrieved 1 May 2023.
  7. Frattare, L. M.; Zurek, D. R. (1997). "The Discovery of a Possible Luminous Blue Variable in NGC 4414". American Astronomical Society, 194th AAS Meeting, #82.02; Bulletin of the American Astronomical Society. 31: 967. Bibcode:1999AAS...194.8202F.
  8. Braine, J.; Brouillet, N.; Baudry, A. (1997). "The anatomy of an isolated spiral galaxy: NGC 4414". Astronomy & Astrophysics. 318: 19–28. Bibcode:1997A&A...318...19B.
  9. Braine, J.; Combes, F.; van Driel, W. (1993). "NGC 4414: A flocculent galaxy with a high gas surface density". Astronomy and Astrophysics. 280 (2): 451–467. Bibcode:1993A&A...280..451B.
  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.
  11. "NGC 4414, a dusty spiral galaxy in Coma Berenices". Anne's Astronomy News (in Dutch). 12 November 2012. Retrieved 2 May 2018.
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