Electronic Telegram No. 3863
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@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2014ao IN NGC 2615
     J. Vinko, University of Szeged and University of Texas at Austin; J. M.
Silverman, J. C. Wheeler, and G. H. Marion, University of Texas at Austin; and
R. Quimby, Kavli Institute for the Physics and Mathematics of the Universe,
University of Tokyo, report on an optical spectrogram (wavelength range
350-1000 nm, resolution about 1.8 nm) of SN 2014ao (cf. CBET 3855) that was
obtained with the Robert Stobie Spectrograph mounted on the Southern African
Large Telescope on Apr. 17.8 UT.  The spectrum shows prominent P-Cyg features
of Si II, S II, Fe II, and Ca II, superimposed on a reddened continuum,
confirming the classification as a type-Ia supernova by Ochner et al. on CBET
3855.  The photospheric velocity estimated from the Si II 635.5-nm feature is
about 12400 km/s.  High-velocity features (HVFs) of Si II (at about 18700
km/s) and the Ca II near-infrared triplet (at about 18300 km/s) are also
identified.  The velocities of the HVFs are somewhat lower than those of SN
2009ig, but they look similar to those of SN 2011fe (Marion et al. 2013, Ap.J.
777, 40).  The SuperNova IDentification (SNID) code finds good matches with
several type-Ia templates at ages between 3 and 6 days before maximum light,
less early than was reported by Ochner et al.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 April 27                    (CBET 3863)              Daniel W. E. Green