NGC 3239

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 ascension10h 25m 06.24s
Declination+17° 09′ 37.8″
Distance86 Mly (26.4 Mpc)h−1
0.73
Apparent magnitude (B)13.5
Characteristics
TypeIB(s)mpec
Other designations
Arp 263, UGC 5637, MCG +03-27-025, PGC 30560

NGC 3239 is an irregular galaxy in the constellation of Leo. The galaxy was discovered in 1784 by William Herschel 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. It's believed that NGC 3239 is the result of a galactic merger with a low-mass galaxy.

NGC 3239 is located in the low density environment near the Lynx-Cancer Void, along with many other galaxies such as NGC 2543, NGC 3041, NGC 3344, NGC 3198, NGC 3319 and NGC 3365. Galaxies within the Lynx-Cancer Void are NGC 2500, NGC 2537, NGC 2541, NGC 2552, NGC 2337 and IC 2450.

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. It reached a peak visual magnitude of +13.6. Later analysis concluded that the progenitor was a red supergiant with 10 to 15 times the mass of the sun.

References

  1. 1 2 3 4 5 "NGC 3239". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 March 2019.
  2. ↑ Ford, Dominic. "The galaxy NGC 3239 - In-The-Sky.org". in-the-sky.org. Retrieved 2019-03-09.
  3. ↑ "New General Catalog Objects: NGC 3200 - 3249". cseligman.com. Retrieved 2019-03-12.
  4. ↑ "The Atlas and Catalogue of Interacting Galaxies". ned.ipac.caltech.edu. Retrieved 2025-02-16.
  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. Bibcode:2024MNRAS.528..294Z. doi:10.1093/mnras/stad3982. ISSN 0035-8711.
  6. ↑ Pustilnik, S. A.; Tepliakova, A. L. (2011). "Study of galaxies in the Lynx–Cancer void – I. Sample description". Monthly Notices of the Royal Astronomical Society. 415 (2): 1188–1201. arXiv:1105.3034. Bibcode:2011MNRAS.415.1188P. doi:10.1111/j.1365-2966.2011.18733.x.
  7. ↑ 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.
  8. ↑ "SN 2012A". Transient Name Server. IAU. Retrieved 29 April 2025.
  9. ↑ Bishop, David. "Bright Supernovae - 2012". Rochester Astronomy. Retrieved 29 April 2025.
  10. ↑ "APOD: 2012 January 27 - NGC 3239 and SN 2012A". apod.nasa.gov. Retrieved 2019-03-09.
  11. ↑ Tomasella, L.; Cappellaro, E.; Fraser, M.; Pumo, M. L.; Pastorello, A.; Pignata, G.; Benetti, S.; Bufano, F.; Dennefeld, M.; Harutyunyan, A.; Iijima, T.; Jerkstrand, A.; Kankare, E.; Kotak, R.; Magill, L.; Nascimbeni, V.; Ochner, P.; Siviero, A.; Smartt, S.; Sollerman, J.; Stanishev, V.; Taddia, F.; Taubenberger, S.; Turatto, M.; Valenti, S.; Wright, D. E.; Zampieri, L. (2013). "Comparison of progenitor mass estimates for the Type IIP SN 2012A". Monthly Notices of the Royal Astronomical Society. 434 (2): 1636–1657. arXiv:1305.5789. doi:10.1093/mnras/stt1130.