Supernova 2014N in ESO 246-G22 = Psn J02305891-4425223
Abstract
Stuart Parker, Canterbury, New Zealand, reports the discovery of an apparent supernova (red mag 18.5) on a 30-s unfiltered CCD image (limiting mag 19) taken by himself on Jan. 27.468 UT with a 30-cm Astro-Tech AT12RC Ritchey-Chretien astrograph (+ ST10 camera) at his Parkdale Observatory in the course of the Backyard Observatory Supernova Search. The new object is located at R.A. = 2h30m58s.91, Decl. = -44d25'22".3 (equinox 2000.0; reference stars from USNO-B and UCAC4 catalogues), which is 13" west and 13" north of the nucleus of the galaxy ESO 246-G22. Nothing is visible at this position on Digitized Sky Survey red and infrared images (limiting red magnitude > 19). The new object is also easily visible on a previous image taken on Jan. 4.490 with the same telescope (but was missed at the time). The variable was designated PSN J02305891-4425223 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2014N based on the spectroscopic confirmation reported below. M. R. Drout and D. Milisavljevic, Harvard-Smithsonian Center for Astrophysics, report than an optical spectrogram (range 425-944 nm; resolution 0.4 nm) of PSN J02305891-4425223 = SN 2014N, obtained on Feb. 2.0 UT with the 6.5-m Magellan Baade telescope (+ IMACS), shows it to be a type-II supernova. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows matches with normal type-IIP events approximately 30-40 days after maximum light. The best matches are with SN 2004et, SN 2004dj, and SN 2005es at a redshift consistent with the host galaxy, ESO 246-G22 (z = 0.017; de Vaucouleurs et al. 1991, via NED).
- Publication:
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Central Bureau Electronic Telegrams
- Pub Date:
- February 2014
- Bibcode:
- 2014CBET.3798....1P