Supernova 2013R in UGC 5055 = Psn J09301230+5551135
Abstract
The variable was designated PSN J09301230+5551135 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2014R based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2014R: Feb. 7.02 UT, [19.0 (Giancarlo Cortini, Predappio, Italy; 35-cm f/5.5 Schmidt-Cassegrain reflector + SXVR H-9 camera); 9.90, 17.5 (Cortini; limiting mag 18.5); 12.406, 17.7 (Joseph Brimacombe, Cairns, Australia; remotely with a 43-cm CDK telescope + STL-6303 camera at the New Mexico Skies observatory near Mayhill, New Mexico, USA; position end figures 12s.31, 13".4; image posted at URL http://www.flickr.com/photos/43846774@N02/12508891745/); 12.972, 16.9 (Gianluca Masi, Francesca Nocentini, and Patrick Schmeer; remotely using a 43-cm telescope near Ceccano, Italy; position end figures 12s.28, 13".3). J.-J. Zhang, Yunnan Astronomical Observatory (YNAO); and X.-F. Wang, Tsinghua University, report on an optical spectrogram (range 340-890 nm) of PSN 09301230+5551135 = SN 2014R that was obtained on Feb. 13.62 UT with the 2.4-m telescope (+ YFOSC) at the LiJiang Gaomeigu Station of the YNAO. The spectrum is consistent with a 1991T-like type-Ia supernova at about one week before 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 2014R matches with SN 1997br at -7 days. The spectrum is very blue with prominent absorptions of Fe III and Fe II lines. Adopting a recession of 7550 km/s for the host galaxy, UGC 5055 (Springob 2005, Ap.J. Suppl. 160, 149), they measure a velocity of the Si II 635.5-nm absorption feature to be about 12300 km/s.
- Publication:
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Central Bureau Electronic Telegrams
- Pub Date:
- February 2014
- Bibcode:
- 2014CBET.3808....2Z