Universe Galaxies

NGC 4414

NGC_4414_(NASA-med)

NGC 4414

NGC 4414 is an unbarred spiral galaxy about 62 million light-years away in the constellation Coma Berenices. It is a flocculent galaxy, with short segments of spiral structure but without the dramatic well-defined spiral arms of a grand design spiral. In 1974 a supernova, SN 1974G, was observed and is the only supernova in this galaxy to be recorded so far.

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[3]

NGC 4414 is also a very isolated galaxy without signs of past interactions with other galaxies[4] 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-[5]

References

  1. ^ a b c d e f g h “NASA/IPAC Extragalactic Database”. Results for NGC 4414. Retrieved 2006-11-25.
  2. ^ “Pattern Speeds BIMA-SONG Galaxies with Molecule-Dominated ISMs Using the Tremaine-Weinberg Method”. (Turner et al. 1998). arXiv:astro-ph/0406426.
  3. ^ 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.
  4. ^ Braine, J.; Brouillet, N.; Baudry, A. (1997). “The anatomy of an isolated spiral galaxy: NGC 4414.”. Astronomy and Astrophysics 318: 19-28. Bibcode 1997A&A…318…19B.
  5. ^ 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.

External links


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