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NGC 7320

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Galaxy in the constellation Pegasus
NGC 7320
NGC 7320 imaged by the Hubble Space Telescope
Observation data (J2000.0 epoch)
Constellation Pegasus
Right ascension 22h 36m 03.4s[1]
Declination +33° 56′ 53″[1]
Redshift 786 ± 20 km/s [1]
Distance 39 million ly (12 Mpc)[2]
Apparent magnitude (V)+13.2[1]
Characteristics
Type SA(s)d[1]
Apparent size (V)2.2′ ×ばつ 1.2′[1]
Notable featuresForeground projection on Stephan's Quintet
Other designations
UGC 12101, PGC 69270, Arp 319, HCG 092A[1]

NGC 7320 is a spiral galaxy in the constellation Pegasus. It was discovered on 27 September 1873 by French astronomer Édouard Stephan.[3]

NGC 7320 is a member of Stephan's Quintet, however, it is not an actual member of the galaxy group, but a much closer line-of-sight galaxy at a distance of about 40 million light years, the same as the nearby NGC 7331. Other galaxies of Stephan's Quintet are some 300 million light-years distant.

NGC 7320 has extensive H II regions, identified as red blobs, where active star formation is occurring.

The galaxy was imaged by the James Webb Space Telescope as part of Stephan's Quintet; the picture was released on 12 July 2022.

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See also

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References

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  1. ^ a b c d e f g "NASA/IPAC Extragalactic Database". Results for NGC 7320. Retrieved 2006年10月21日.
  2. ^ Moles, M.; Marquez, I.; Sulentic, J. W. (1998). "The observational status of Stephan's Quintet". Astronomy and Astrophysics. 334: 473–481. arXiv:astro-ph/9802328 . Bibcode:1998A&A...334..473M.
  3. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 7320". Celestial Atlas. Retrieved 28 August 2024.
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