Supernova 2014de = Psn J03083174+1425303
Abstract
V. Lipunov reports the discovery by V. Shumkov of an apparent supernova (mag 17.2) on unfiltered survey images (180-s exposures, limiting mag 19.9) obtained with the MASTER-Kislovodsk robotic 0.40-m reflector on Aug. 28.00 UT. The new object is located at R.A. = 3h08m31s.74, Decl. = +14o25'30".3 (equinox 2000.0), which is 1" east and 7" south of the center of the galaxy PGC 1457807. D. Denisenko and E. Gorbovskoy report that nothing but galaxy background is present at this position on the images taken with the same telescope on 2011 Jan. 11.682 UT (limiting mag 22.1). The discovery and reference images are available at URL http://master.sai.msu.ru/static/OT/030831.74142530.3.png. The variable was designated PSN J03083174+1425303 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2014de based on the spectroscopic confirmation reported below. J. Brimacombe, Cairns, Australia, reports mag 18.2 and position end figures 31s.97, 30".1 for 2014de from images obtained remotely on Sept. 2.704 using a 43-cm CDK telescope at the Savahhah Skies Observatory in northern Queensland, Australia (images posted at website URL https://www.flickr.com/photos/43846774@N02/15015072080/). S. T. Hodgkin, A. Hall, M. Fraser, and H. Campbell, University of Cambridge; L. Wyrzykowski and Z. Kostrzewa-Rutkowska, Warsaw Observatory; and N. Pietro, Isaac Newton Group, Warwick University, report that a spectrogram (range 350-800 nm; resolution about 0.6 nm) of PSN J03083174+1425303 = SN 2014de was obtained with the 2.5-m Isaac Newton Telescope (+ Intermediate Dispersion Spectrograph + R300V grating) at La Palma on Sept. 4.25 UT. The spectrum was compared to a set of templates using SNID (Blondin and Tonry 2007, Ap.J. 666, 1024), and a good match was found to a type-Ia supernova around ten days after maximum light, at a redshift of z = 0.05.
- Publication:
-
Central Bureau Electronic Telegrams
- Pub Date:
- September 2014
- Bibcode:
- 2014CBET.3976....1L