Astronomy:NGC 3239

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NGC 3239
Image of NGC 3239 (top center) as taken by the Mount Lemmon Sky Center, the bright spot inside the irregular galaxy is SN 2012A
Observation data (J2000 epoch)
ConstellationLeo
Right ascension 10h 25m 06.24s[1]
Declination+17° 09′ 37.8″[1]
Distance86 Mly (26.4 Mpc)h−10.73
Apparent magnitude (B)13.5[1]
Characteristics
TypeIB(s)mpec[1]
Other designations
Arp 263, UGC 5637, MCG+03-27-025, PGC 30560[1]

NGC 3239 is an irregular galaxy in the constellation of Leo.[2] The galaxy was discovered in 1784 by William Herschel[3] and is part of the New General Catalogue. It harbors a large and relatively bright H II region in its southeastern section that was first cataloged by Russian astronomer Boris Vorontsov-Velyaminov as VV95b.[4] It's believed that NGC 3239 is the result of a galactic merger with a low-mass galaxy.[5]

Supernova

One supernova has been observed in NGC 3239. SN 2012A (type II-P, mag. 14.6) was discovered by Bob Moore, Jack Newton, and Tim Puckett on 7 January 2012.[6][7] It reached a peak visual magnitude of +13.6.[8][9] Later analysis concluded that the progenitor was a red supergiant with 10 to 15 times the mass of the sun.[10]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 "NGC 3239". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3239. 
  2. ↑ Ford, Dominic. "The galaxy NGC 3239 - In-The-Sky.org" (in en). https://in-the-sky.org/data/object.php?id=NGC3239. 
  3. ↑ "New General Catalog Objects: NGC 3200 - 3249". https://cseligman.com/text/atlas/ngc32.htm#3239. 
  4. ↑ "The Atlas and Catalogue of Interacting Galaxies". https://ned.ipac.caltech.edu/level5/VV_Cat/frames.html. 
  5. ↑ Zasov, Anatoly V.; Saburova, Anna S.; Egorov, Oleg V.; Lander, Vsevolod Yu; Afanasiev, Victor L.; Uklein, Roman I. (2024-02-01). "Long-slit spectral study of the unusual post-interacting galaxy Arp 263". Monthly Notices of the Royal Astronomical Society 528 (1): 294–303. doi:10.1093/mnras/stad3982. ISSN 0035-8711. Bibcode: 2024MNRAS.528..294Z. 
  6. ↑ Moore, B.; Newton, J.; Puckett, T. (2012). "Supernova 2012A in NGC 3239 = PSN J10250739+1709146". Central Bureau Electronic Telegrams (2974): 1. Bibcode: 2012CBET.2974....1M. http://www.cbat.eps.harvard.edu/iau/cbet/002900/CBET002974.txt. 
  7. ↑ "SN 2012A". IAU. https://www.wis-tns.org/object/2012A. 
  8. ↑ Bishop, David. "Bright Supernovae - 2012". https://www.rochesterastronomy.org/sn2012/index.html. 
  9. ↑ "APOD: 2012 January 27 - NGC 3239 and SN 2012A". https://apod.nasa.gov/apod/ap120127.html. 
  10. ↑ Tomasella, L.; Cappellaro, E.; Fraser, M.; Pumo, M. L.; Pastorello, A.; Pignata, G.; Benetti, S.; Bufano, F. et al. (2013). "Comparison of progenitor mass estimates for the Type IIP SN 2012A". Monthly Notices of the Royal Astronomical Society 434 (2): 1636–1657. doi:10.1093/mnras/stt1130. 

Template:NGC objects:3000-3499

Coordinates: Sky map 10h 25m 06.28s, 17° 09′ 37.8″



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