Supernova 2013fv in UGC 2789 = Psn J03361605+6734157
Abstract
Further to CBET 3672, H. Kim, C. Casper, W. Zheng, W. Li, and A. V. Filippenko, University of California at Berkeley; and S. B. Cenko, Goddard Space Flight Center, reported the LOSS discovery of a possible supernova in UGC 2789 on unfiltered KAIT images: SN 2013 UT R.A. (2000.0) Decl. Mag. Offset 2013fv Oct. 11.43 3 36 16.05 +67 34 15.7 18.2 14".3 E, 23".1 N A finding chart was posted by the discoverers at the following website URL: http://astro.berkeley.edu/~zwk/findingchart/PSN_J03361605+67341567.jpg. The variable was designated PSN J03361605+6734157 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2013fv based on the spectroscopic confirmation reported below. Additional approximate CCD magnitudes for 2013fv: Oct. 9.3 UT, [18.8 (KAIT); 12.3, 18.1 (KAIT); 12.868, 18.2 (G. Masi, F. Nocentini, and P. Schmeer; remotely using a 43-cm telescope at Ceccano, Italy; position end figures 16s.07, 15".6); 12.885, 17.7 (Denis Buczynski, Portmahomack, U.K.; Celestron C14 telescope + ST9XE camera; position end figures 16s.14, 16".0); 12.905, R = 17.5 (J. Nicolas, Vallauris, France; 0.28-m reflector; position end figures 16s.10, 15".8; image posted at http://www.astrosurf.com/snaude/im_2013/2013_3/PSN-UGC2789NI_C201310122154.jpg); 13.4, 18.0 (KAIT); 17.308, 19.0 (Joseph Brimacombe, Cairns, Australia; remotely using a 51-cm RCOS telescope + STXL-6303 camera located at the New Mexico Skies observatory near Mayhill, NM, U.S.A.; position end figures 16s.10, 15".8; image posted at URL http://www.flickr.com/photos/43846774@N02/10339465894/). E. Kankare, S. Mattila, and S. Korhonen, University of Turku; J. Ala-Konni, A. Viitanen, and T. Willamo, University of Helsinki; and T. Kangas, Nordic Optical Telescope, report that they obtained a low-resolution spectrogram of PSN J03361605+6734157 = SN 2013fv on Oct. 16.1 UT with the Nordic Optical Telescope (+ ALFOSC; range 320-910 nm). Cross-correlation with a library of supernova spectra using the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) suggests that 2013fv is a young type-II supernova. The continuum shape of the spectrum suggests a relatively high line-of-sight reddening, consistent with the Galactic extinction (A_V) of about 2.2 mag (Schlafly and Finkbeiner 2011, Ap.J. 737, 103).
- Publication:
-
Central Bureau Electronic Telegrams
- Pub Date:
- October 2013
- Bibcode:
- 2013CBET.3678....1K