NGC 474

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Coordinates: Sky map 01h 20m 06.7s, +03° 24′ 58″

NGC 474
NGC 474 Hubble WikiSky.jpg
A Hubble Space Telescope image of NGC 474. (NASA, STScI, Sky-map.org)
Observation data (J2000[1] epoch)
ConstellationPisces[2]
Right ascension01h 20m 06.7s[1]
Declination+03° 24′ 58″[1]
Redshift0.007755[1]
Helio radial velocity2325 km/s ±7 km/s[1]
Galactocentric velocity2398 km/s ±7 km/s[1]
Distance~100 Mly (~31 Mpc)[2]
Characteristics
TypeS0[3]
Size250,000 ly (diameter)[4]
Other designations
Arp 227, MCG 0-4-85, PGC 4801, UGC 864, ZWG 385.71[3]

NGC 474 is an elliptical galaxy about 100 million light years distant in the constellation Pisces. This large galaxy is known to possess tidal tails, although their origins remain unknown.[2] One possible explanation is that NGC 474 interacted with a galaxy several billion years ago.[5]

NGC 474 is known to have tidal tails, but their origins remain somewhat unknown. In 2020, a possible explanation was published. The authors of the study argued that the tidal tails were formed because of a collision with a galaxy 2 billion years ago.[5] The same study also states that NGC 474 is absorbing gas from its neighbor, NGC 470, since the ancient collision. [5]

In July 2017 a Type Ia supernova designated SN 2017fgc was discovered in NGC 474.[6] It was located at a considerable distance from the galactic nucleus.[7]

Gallery[]

  • NGC 474 (2MASS)

  • SDSS image of NGC 474.

  • Elliptical galaxy NGC 474 — excerpt from the Dark Energy Survey


Further reading[]

References[]

  1. ^ a b c d e f "NED results for object NGC 0474*". NASA/IPAC Extragalactic Database. Retrieved 2011-02-26.
  2. ^ a b c Schirmer, Mischa. "NGC 474". Archived from the original on 2011-06-29. Retrieved 2011-02-26.
  3. ^ a b "Revised NGC Data for NGC 474". The Interactive NGC Catalog Online. Retrieved 2011-02-26.
  4. ^ "Galaxy NGC 474". NASA Astronomy Picture of the Day. Retrieved 2018-02-07.
  5. ^ a b c Alabi, A.B.; Anna, F-M.; Forbes, D.A.; Romanowsky, A.J.; Brodie, J.P. (September 2020). "NGC 474 as viewed with KCWI: diagnosing a shell galaxy" (PDF). Monthly Notices of the Royal Astronomical Society. 497 (1): 626–631. Retrieved 28 June 2021.
  6. ^ "SN 2017 fgc". Transient Name Server. Retrieved 9 February 2018.
  7. ^ King, Bob (2017-07-26). "Sky Surprises: New Comet ASASSN1, Nova in Scutum, and Supernova in Pisces!". Sky & Telescope.

External links[]


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