[IAUC] CBET 3826: 20140310 : SUPERNOVA 2014ab = PSN J13480599+0723164

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 3826
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 2014ab = PSN J13480599+0723164
     S. Howerton, Arkansas City, KS, U.S.A.; A. J. Drake, S. G. Djorgovski, A.
Mahabal, M. J. Graham, and R. Williams, California Institute of Technology;
J. L. Prieto, Princeton University; M. Catelan, Pontificia Universidad
Catolica de Chile; and E. Christensen and S. M. Larson, Lunar and Planetary
Laboratory, University of Arizona, report the Catalina Real-time Transient
Survey discovery of an apparent supernova in public images from the Catalina
Sky Survey:

 SN       2014 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2014ab   Mar. 9.43   13 48 05.99  + 7 23 16.4   16.4      1".5 N

Howerton reports magnitude V = 15.9 for the variable on Mar. 9.587 UT from CCD
images obtained at Siding Spring, nothing that the measurement is contaminated
by background light from the host galaxy.  The variable was designated PSN
J13480599+0723164 when it was posted at the Central Bureau's TOCP webpage and
is here designated SN 2014ab based on the spectroscopic confirmation reported
below.

     E. Y. Hsiao, M. M. Phillips, and N. Morrell, Las Campanas Observatory; C.
Contreras, C. Gall, and M. D. Stritzinger, Aarhus University; G. H. Marion,
University of Texas, Austin; and R. P. Kirshner, Harvard-Smithsonian Center
for Astrophysics, report that near-infrared spectrogram (range 800-2500 nm),
obtained on Mar. 10.25 UT with the FoldedPort Infrared Echellette (FIRE)
spectrograph on the 6.5-m Magellan Baade Telescope at Las Campanas Observatory,
shows that PSN J13480599+0723164 = SN 2014ab is a type-IIn supernova more than
a month past maximum.  The spectrum resembles the FIRE spectrum of SN 2012ca
taken on 2012 Apr. 30.36, with several emission lines of the hydrogen Paschen
series present at an approximate redshift of z = 0.02.


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                         (C) Copyright 2014 CBAT
2014 March 10                    (CBET 3826)              Daniel W. E. Green