NGC 3239 explained

NGC 3239
Epoch:J2000
Constellation Name:Leo
Ra:[1]
Type:IB(s)mpec
Appmag B:13.5

NGC 3239 is an irregular galaxy in the constellation of Leo.[2] It is the host of SN 2012A, the first supernova of 2012.[3] The galaxy, which was discovered in 1784 by William Herschel,[4] is part of the New Galactic Catalogue, and with an apparent magnitude of 13.5, is not visible to the naked eye. It has been shown to have many HII regions, while also having some star formation regions. These signs are common in galactic mergers, which is why it is believed that NGC 3239 is the result of a galactic merger.[5] The supernova SN 2012A was discovered in this galaxy and has been classified as a type II-P supernova, with a shorter plateau and non-constant luminosity.[6]

Notes and References

  1. NGC 3239. 10 March 2019.
  2. Web site: The galaxy NGC 3239 - In-The-Sky.org. Ford. Dominic. in-the-sky.org. en. 2019-03-09.
  3. Web site: APOD: 2012 January 27 - NGC 3239 and SN 2012A. apod.nasa.gov. 2019-03-09.
  4. Web site: New General Catalog Objects: NGC 3200 - 3249. cseligman.com. 2019-03-12.
  5. Web site: 1990PASP..102...41K Page 41. adsbit.harvard.edu. 2019-03-09.
  6. Comparison of progenitor mass estimates for the type IIP SN 2012A. Monthly Notices of the Royal Astronomical Society. 2013. 434. 1636–1657. 10.1093/mnras/stt1130. 1305.5789. 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.. 2. free. 2013MNRAS.434.1636T.

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