Astronomy:NGC 2857

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NGC 2857
File:250px
SDSS image of NGC 2857
Observation data (J2000 epoch)
ConstellationUrsa Major[1]
Right ascension 09h 24m 37.698s [2]
Declination+49° 21′ 25.69″ [2]
Redshift0.016301 ± 0.000023 [3]
Helio radial velocity4887 ± 7 km/s [3]
Galactocentric velocity4917 ± 7 km/s [3]
Distance69.050 ± 00 kpc (225.21 ± 0.00 kly)h−10.73 [3]
Apparent magnitude (V)12.27 [2]
Apparent magnitude (B)12.90 [2]
Absolute magnitude (V)-21.92 ± 0.22 [3]
Characteristics
TypeSA(s)c [3]
Size125,000 [1]
Apparent size (V)1.70′ × 1.43′ [3]
Other designations
NGC 2857, Arp 1, APG 1, PGC 26666, UGC 5000

NGC 2857 (also known as Arp 1 and PGC 26666) is a spiral galaxy in the constellation Ursa Major. It was discovered on January 9, 1856, by R. J. Mitchell.[1]

NGC 2857 is the first object in Halton Arp's Atlas of Peculiar Galaxies, and one of six Arp objects in the 'Low Surface Brightness Galaxies' section. The other five low surface brightness galaxies are Arp 2 (UGC 10310), Arp 3, Arp 4, Arp 5 (NGC 3664), and Arp 6 (NGC 2537).[4]

Supernova

One supernova has been observed in NGC 2857:

  • SN 2012fg (Type II-P, mag. 14.5) was discovered by the MASTER-Kislovodsk auto-detection system on October 7, 2012.[5][6][7][8] Its absolute magnitude was calculated to be -19.8.[9] The spectrum of SN 2012fg was recorded and analyzed by multiple teams of scientists as it changed rapidly in the days following its detection.[10][11]

References

  1. ↑ 1.0 1.1 1.2 Seligman, Courtney. "New General Catalog Objects: NGC 2850 - 2899". http://cseligman.com/text/atlas/ngc28a.htm#2857. 
  2. ↑ 2.0 2.1 2.2 2.3 "SIMBAD Astronomical Database". Results for NGC 2857. http://simbad.u-strasbg.fr/simbad/. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "NASA/IPAC Extragalactic Database". Results for NGC 2857. http://www.ned.ipac.caltech.edu/. 
  4. ↑ Arp, Halton (1966). "Atlas of Peculiar Galaxies". https://ned.ipac.caltech.edu/level5/Arp/Arp_figure1.html. 
  5. ↑ Lipunov, V.; Shumkov, V.; Denisenko, D.; Gorbovskoy, E.; Elenin, L.; Molotov, I.; Camilleri, P.; Marion, G. H. et al. (2012). "Supernova 2012fg in NGC 2857 = PSN J09243795+4921320". Central Bureau Electronic Telegrams (3253): 1. Bibcode: 2012CBET.3253....1L. 
  6. ↑ "SN 2012fg". IAU. https://www.wis-tns.org/object/2012fg. 
  7. ↑ Pruzginskaya, M. et al. (2012). "Folow up [sic B,V,R,I photometry bright SN 2012fg in NGC 2857 discovered by MASTER"]. The Astronomer's Telegram 4489: 1. Bibcode: 2012ATel.4489....1P. http://www.astronomerstelegram.org/?read=4489. 
  8. ↑ Shumkov, V. et al. (2012). "Bright PSN in NGC2857". The Astronomer's Telegram 4459: 1. Bibcode: 2012ATel.4459....1S. http://www.astronomerstelegram.org/?read=4459. 
  9. ↑ Cellier-Holzem, F. et al. (2012). "Spectroscopic Observation of the Bright PSN in NGC2857 by the Nearby Supernova Factory II". The Astronomer's Telegram 4466: 1. Bibcode: 2012ATel.4466....1C. http://www.astronomerstelegram.org/?read=4466. 
  10. ↑ Fabrika, S.; Valeev, A.; Fatkhullin, T.; Sholukhova, O.; Vinokurov, A. (2012). "Spectrum of bright SN 2012fg in NGC 2857". The Astronomer's Telegram 4496: 1. Bibcode: 2012ATel.4496....1F. http://www.astronomerstelegram.org/?read=4496. 
  11. ↑ Fabrika, S.; Fatkhullin, T.; Valeev, A.; Moskvitin, A.; Vinokurov, A.; Sholukhova, O. (2012). "Spectrum change of bright SN 2012fg in NGC 2857". The Astronomer's Telegram 4520: 1. Bibcode: 2012ATel.4520....1F. http://www.astronomerstelegram.org/?read=4520. 

Coordinates: Sky map 09h 24m 37.698s, +49° 21′ 25.69″

Template:NGC objects:2001-3000



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