UGC 8335

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UGC 8335
Hubble Interacting Galaxy UGC 8335 (2008-04-24).jpg
An image of UGC 8335 taken in 2002 by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Ursa Major
Right ascension 13h 15m 32.8s [1]
Declination +62° 07′ 37″ [1]
Redshift 0.030831 ± 0.000097 [2]
Heliocentric radial velocity 9243 ± 29 km/s [2]
Galactocentric velocity9364 ± 29 km/s [2]
Distance 128.3 ± 9.0  Mpc (418 ± 29  Mly) h−1
0.73 [1]
Apparent magnitude  (V)14.4 ± 0.4 [2]
Absolute magnitude  (V)-21.19 ± 0.64 [2]
Characteristics
Size65.05  kpc × 26.67 kpc (212.2  kly × 87.0 kly) [1]
Apparent size  (V)1.70′ × 0.70′ [3]
Other designations
KPG 369, Arp 238, PGC 46133, VV 250

UGC 8335 (Arp 238) is a pair of strongly interacting spiral galaxies. They have been distorted by extreme tidal forces, creating prominent tidal tails and a bridge of gas and stars between the galaxies. [4] [5]

Contents

UGC 8335 is about 400 million light-years from Earth, in the constellation Ursa Major. It is the 238th object in Halton Arp's Atlas of Peculiar Galaxies. [4]

Supernova

On 25 April 2012, Doug Rich discovered supernova SN 2012by in UGC 8335. [6] [7] At the time of discovery, the supernova had a magnitude of 17.6. [8] A peak magnitude measurement of 17.3 was recorded two days later, on April 27. [6] SN 2012by was classified as a Type II supernova by Tomasella et al. at the Astronomical Observatory of Padova. The research group also found that its spectrum was similar to that of SN 1996as. [8]

References

  1. 1 2 3 4 "UGC 8335". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2015-12-10.
  2. 1 2 3 4 5 "NASA/IPAC Extragalactic Database". Results for UGC 8335. Retrieved 2015-12-10.
  3. ↑ Nilson, P. (1973), Uppsala General Catalogue of Galaxies, Acta Universitatis Upsalienis, Nova Regiae Societatis Upsaliensis, Series V: A Vol. 1
  4. 1 2 "HubbleSite - NewsCenter - Cosmic Collisions Galore!". hubblesite.org. 2008-04-24. Retrieved 2015-12-10.
  5. ↑ "Astronomy Picture of the Day: 4/19/13 - UGC 8335". Futurism. Retrieved 2015-12-10.
  6. 1 2 "Bright Supernovae - 2012". www.rochesterastronomy.org. Retrieved 2015-12-10.
  7. ↑ "List of Supernovae". www.cbat.eps.harvard.edu. Retrieved 2015-12-10.
  8. 1 2 Green, Daniel (2012-04-29). "[IAUC] CBET 3095: 20120429 : SUPERNOVA 2012by IN UGC 8335 = PSN J13152890+6207478". Electronic Telegram No. 3095. Central Bureau for Astronomical Telegrams. Archived from the original on 2015-12-24. Retrieved 2015-12-10.
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