Supernova 2014Y = Psn J07233339+5426302
Abstract
Tianmeng Zhang, National Astronomical Observatories of China (NAOC); and Xiaofeng Wang and Jun Mo, Tsinghua University (THU), report the discovery of an apparent supernova (mag 18.3) on unfiltered CCD images taken on Mar. 2.59 UT using the 0.6-m NAOC Schmidt telescope in the course of the THU-NAOC Transient Survey (TNTS). The new object is located at R.A. = 7h23m33s.39, Decl. = +54d26'30".2 (equinox 2000.0), which is 1".7 west and 3".2 north of the center of the presumed host galaxy. Nothing is visible at this position on a Digitized Sky Survey image. The TNTS images are posted at website URL http://www.thca.tsinghua.edu.cn/~wangxf/TNTS/PSNJ07233339+5426202.png. The variable was designated PSN J07233339+5426302 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2014Y based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2014Y: Feb. 21, [20.0 (TNTS); Mar. 4.369, 17.7 (Joseph Brimacombe, Cairns, Australia; remotely using a 43-cm CDK telescope + STL-6303 camera at the New Mexico Skies observatory near Mayhill, NM, USA; position end figures 33s.46, 19".3; image posted at http://www.flickr.com/photos/43846774@N02/12978850675/); 7.778, 17.9 (Gianluca Masi, Francesca Nocentini, and Patrick Schmeer; remotely using the a 43-cm telescope near Ceccano, Italy; position end figures 33s.41, 19".6). J.-J. Zhang, Yunnan Astronimical Observatory (YNAO); and X.-F. Wang, Tsinghua University, report on an optical spectrogram (range 340-880 nm) of PSN J07233339+5426302 = SN 2014Y that was obtained on Mar. 7.67 UT with the 2.4-m telescope (+ YFOSC) at the LiJiang Gaomeigu Station of YNAO. The spectrum is consistent with a type-IIn supernova at a few weeks after maximum light. Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that 2014Y matches with SN 1996L at +58 days. The host galaxy seems to have a redshift of about 0.039 from the narrow emission line.
- Publication:
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Central Bureau Electronic Telegrams
- Pub Date:
- March 2014
- Bibcode:
- 2014CBET.3821....1Z