Astronomy:UGC 8335
| UGC 8335 | |
|---|---|
.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] |
| Helio radial velocity | 9243 ± 29 km/s [2] |
| Galactocentric velocity | 9364 ± 29 km/s [2] |
| Distance | 128.3 ± 9.0 Mpc (418 ± 29 Mly) h−10.73[1] |
| Apparent magnitude (V) | 14.4 ± 0.4 [2] |
| Absolute magnitude (V) | -21.19 ± 0.64 [2] |
| Characteristics | |
| Size | 65.05 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 | |
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]
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
- ↑ 1.0 1.1 1.2 1.3 "UGC 8335". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=UGC+8335.
- ↑ 2.0 2.1 2.2 2.3 2.4 "NASA/IPAC Extragalactic Database". Results for UGC 8335. https://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=ugc+8335&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES. Retrieved 2015-12-10.
- ↑ Nilson, P. (1973), Uppsala General Catalogue of Galaxies, Acta Universitatis Upsalienis, Nova Regiae Societatis Upsaliensis, Series V: A Vol. 1
- ↑ 4.0 4.1 "HubbleSite - NewsCenter - Cosmic Collisions Galore!". 2008-04-24. http://hubblesite.org/newscenter/archive/releases/2008/16/image/ah/. Retrieved 2015-12-10.
- ↑ "Astronomy Picture of the Day: 4/19/13 - UGC 8335" (in en-US). http://futurism.com/astronomy-picture-of-the-day-41913-ugc-8335/. Retrieved 2015-12-10.
- ↑ 6.0 6.1 "Bright Supernovae - 2012.". http://www.rochesterastronomy.org/sn2012/index.html#2012by. Retrieved 2015-12-10.
- ↑ "List of Supernovae". http://www.cbat.eps.harvard.edu/lists/Supernovae.html. Retrieved 2015-12-10.
- ↑ 8.0 8.1 Green, Daniel (2012-04-29). "[IAUC CBET 3095: 20120429 : SUPERNOVA 2012by IN UGC 8335 = PSN J13152890+6207478"]. Central Bureau for Astronomical Telegrams. Archived from the original on 2015-12-24. https://web.archive.org/web/20151224001438/https://www.fcaglp.unlp.edu.ar/pipermail/iauc/2012-April/002731.html. Retrieved 2015-12-10.
External links
- SIMBAD Astronomical Database
- NASA/IPAC Extragalactic Database
- Full Arp Atlas
- Arp Atlas image of Arp 238[yes|permanent dead link|dead link}}]
- List of supernovae for 2012
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