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  • 21 Aug, 2019

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NGC 7314
NGC 7314 is a spiral galaxy located in the southern constellation of Piscis Austrinus. It was discovered by English astronomer John Herschel on July 29, 1834. This is a nearby Seyfert (active) galaxy, located at a distance of approximately 54.6 megalight-years from the Milky Way. Since it appears to have detached spiral arm segments (either from dust lanes or bright star clusters), it was listed in Halton Arp's Atlas of Peculiar Galaxies.

Walter Scott Houston describes its appearance in small telescopes:

Do not let its photographic magnitude of 11.6 scare you off, for it can be seen in a 6-inch telescope as a curiously fuzzy object. But it is small, appearing only 4' by 2'.

The morphological classification of this galaxy is SAB(rs)bc, indicating a spiral galaxy with a weak central bar (SAB), an incomplete ring structure around the bar (rs), and moderately–wound arms (bc). The plane of the galactic disk is inclined by 64° to the line of sight from the Earth, with the major axis aligned along a position angle of 178°. Within the galaxy's core is an active galactic nucleus tentatively classified as a type I Seyfert. The central supermassive black hole has a relatively low mass, estimated as (0.87±0.45)×10 M☉. The core is a source for X-ray emission that is seen to vary dramatically on time scales as low as hours.

References

  1. ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ de Vaucouleurs, G.; et al. (1991). Third reference catalogue of bright galaxies. 9. New York: Springer-Verlag.
  3. ^ Tully, R. Brent; et al. (2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 21. arXiv:1605.01765. Bibcode:2016AJ....152...50T. doi:10.3847/0004-6256/152/2/50. S2CID 250737862. 50.
  4. ^ "NASA/IPAC Extragalactic Database". Results for NGC 7314. Retrieved 2007-04-21.
  5. ^ Emmanoulopoulos, D.; et al. (August 2016). "Extensive X-ray variability studies of NGC 7314 using long XMM-Newton observations". Monthly Notices of the Royal Astronomical Society. 460 (3): 2413–2431. arXiv:1605.03193. Bibcode:2016MNRAS.460.2413E. doi:10.1093/mnras/stw1128.
  6. ^ Paturel, G.; et al. (December 2003). "HYPERLEDA. I. Identification and designation of galaxies". Astronomy and Astrophysics. 412: 45–55. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411.
  7. ^ "NGC 7314". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-20.
  8. ^ Arp, Halton (1966). Atlas of Peculiar Galaxies. Pasadena, California: California Institute of Technology. Retrieved 5 Jan 2010. (webpage includes PDF link)
  9. ^ Seligman, Courtney. "NGC Objects: NGC 7300 - 7349". Retrieved 2020-10-20.
  10. ^ Houston, Walter Scott (2005). Deep-Sky Wonders. Sky Publishing Corporation. ISBN 978-1-931559-23-2.
  11. ^ García-Gómez, C.; et al. (July 2002). "Analysis of the distribution of HII regions in external galaxies. IV. The new galaxy sample. Position and inclination angles". Astronomy and Astrophysics. 389: 68–83. arXiv:astro-ph/0204231. Bibcode:2002A&A...389...68G. doi:10.1051/0004-6361:20020460. S2CID 13942721.


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