[IAUC] CBET 3999: 20141001 : SUPERNOVA 2014dm IN NGC 1524 = PSN J04080713-0849372

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                                                  Electronic Telegram No. 3999
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 2014dm IN NGC 1524 = PSN J04080713-0849372
     N. Blagorodnova, N. Walton, M. Fraser, and H. Campbell, Institute of
Astronomy, University of Cambridge; C. Ashall, Liverpool John Moores
University; R. Scalzo, Australian National University; C. Inserra, S. J.
Smartt, K. W. Smith, and D. Young, Queen's University, Belfast; K. Maguire,
European Southern Observatory (ESO); M. Sullivan, University of Southampton;
S. Valenti, Las Cumbres Observatory Global Telescope Network; and O. Yaron, I.
Manulis, and A. Gal-Yam, Weizmann Institute for Science -- on behalf of the
"Public ESO Spectroscopic Survey for Transient Objects" collaboration (see
(cf. website URL http://www.pessto.org) -- report that an optical spectrogram
of PSN J04080713-0849372 = SN 2014dm (cf. CBET 3996), obtained on Sept. 28 UT
at the 3.6-m New Technology Telescope (+ EFOSC2 Grism 13; range 398.5-931.5
nm; 1.8-nm resolution) at La Silla, shows it to be a type-Ia supernova.
Adopting a recession velocity of 6726 km/s for NGC 1516A = NGC 1524 (Strauss
et al. 1992, Ap.J. Suppl. 83, 29; via NED), the best fit to this spectrum
found by "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J.
666, 1024) is with the spectrum of a type-Ia supernova around maximum.  The
spectrum displays H and Si in a manner consistent with a redshift of 0.03.


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                         (C) Copyright 2014 CBAT
2014 October 1                   (CBET 3999)              Daniel W. E. Green