[IAUC] CBET 3611: 20130801 : SUPERNOVA 2013el IN NGC 1285 = PSN J03175245-0718021

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 3611
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau en eps.harvard.edu (alternate cbat en iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2013el IN NGC 1285 = PSN J03175245-0718021
     Stuart Parker, Canterbury, New Zealand, reports the discovery of an
apparent supernova (red mag 15.5) on a 30-s unfiltered CCD image (limiting
mag 18.0) taken by himself on July 11.790 UT with a 35-cm Celestron C14
reflector (+ ST10 camera) at the Parkdale Observatory in the course of the
Backyard Observatory Supernova Search.  The new object is located at R.A. =
3h17m52s.45, Decl. = -7d18'02".1 (equinox 2000.0; reference stars from USNO-B
and UCAC4 catalogues), which is 14" west and 10" south of the nucleus of the
galaxy NGC 1285.  Nothing is visible at this position on Digitized Sky Survey
red and infrared images (limiting red magnitude > 19).  Parker has posted an
image of the variable at website URL http://tinyurl.com/ozssjwr.  The variable
was designated PSN J03175245-0718021 when it was posted at the Central
Bureau's TOCP webpage and is here designated SN 2013el based on the
spectroscopic confirmation reported below.  Joseph Brimacombe, Cairns,
Australia, reports that he observed 2013el at mag 16.1 with position end
figures 52s.51, 01".8 on eighteen 30-s CCD images taken remotely on July
14.442 with a 51-cm RCOS telescope (+ luminance filter) located at the New
Mexico Skies observatory near Mayhill, NM, U.S.A.; he has posted images at
website URL http://www.flickr.com/photos/43846774@N02/9282165723/.

     S. Valenti, M. L. Graham, and D. A. Howell, Las Cumbres Observatory
Global Telescope (LCOGT) and University of California at Santa Barbara; D.
Sand, Texas Tech University; and J. T. Parrent, LCOGT and Dartmouth College,
report that a spectrogram (range 320-1000 nm) of PSN J03175245-0718021 = SN
2013el, obtained robotically on July 13.72 UT with the FLOYDS spectrograph at
the "Faulkes Telescope South" at Siding Spring, shows a blue continuum with
He I features having a P-Cyg profile.  No hydrogen lines are visible.
Comparisons with a library of supernova spectra using the "GELATO" code
(Harutyunyan et al. 2008, A.Ap. 488, 383) yields the best match with the
peculiar type-Ib supernova 2001gh (Elias-Rosa et al. 2009, AIP Conf. Proc.
1111, 625).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2013 CBAT
2013 August 1                    (CBET 3611)              Daniel W. E. Green