NGC 3239
(Redirected from SN 2012A)
| 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) | |
| Constellation | Leo |
| Right ascension | 10h 25m 06.24s[1] |
| Declination | +17° 09′ 37.8″[1] |
| Distance | 86 Mly (26.4 Mpc)h−1 0.73 |
| Apparent magnitude (B) | 13.5[1] |
| Characteristics | |
| Type | IB(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
[edit]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
[edit]- ^ a b c d e "NGC 3239". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 10 March 2019.
- ^ Ford, Dominic. "The galaxy NGC 3239 - In-The-Sky.org". in-the-sky.org. Retrieved 2019-03-09.
- ^ "New General Catalog Objects: NGC 3200 - 3249". cseligman.com. Retrieved 2019-03-12.
- ^ "The Atlas and Catalogue of Interacting Galaxies". ned.ipac.caltech.edu. Retrieved 2025-02-16.
- ^ 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.
- ^ 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.
- ^ "SN 2012A". Transient Name Server. IAU. Retrieved 29 April 2025.
- ^ Bishop, David. "Bright Supernovae - 2012". Rochester Astronomy. Retrieved 29 April 2025.
- ^ "APOD: 2012 January 27 - NGC 3239 and SN 2012A". apod.nasa.gov. Retrieved 2019-03-09.
- ^ 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.
External links
[edit]
Media related to NGC 3239 at Wikimedia Commons
