[IAUC] CBET 3893: 20140613 : SUPERNOVA 2014bj = PSN J19223915+4353269

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 3893
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 2014bj = PSN J19223915+4353269
     Further to CBET 3855, H. Yuk, W. Zheng, and A. V. Filippenko, University
of California at Berkeley, report the LOSS discovery of a possible supernova
on unfiltered KAIT images:

 SN       2014 UT       R.A. (2000.0) Decl.      Mag.
 2014bj   May 22.49   19 22 39.15  +43 53 26.9   17.5

A finding chart for the new object was posted at the following website URL:
http://astro.berkeley.edu/~zwk/findingchart/PSN_J19223915+43532688.jpg.  The
variable was designated PSN J19223915+4353269 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2014bj based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2014bj:  Apr. 14 UT, [18.5 (KAIT); May 26.909, 16.8 (G. Masi; remotely using
a 43-cm telescope at Ceccano, Italy; position end figures 39s.12, 27".0).

     D. D. Balam, Dominion Astrophysical Observatory, National Research
Council of Canada; M. L. Graham, Las Cumbres Observatory Global Telescope,
University of California at Santa Barbara; and E. Y. Hsiao, Las Campanas
Observatory, report that a spectrogram (range 369-700 nm, resolution 0.3 nm)
of PSN J19223915+4353269 = SN 2014bj, obtained on June 3.38 UT with the 1.82-m
Plaskett Telescope of the National Research Council of Canada, shows it to be
a type-Ia supernova about two weeks after maximum light.  Cross-correlation
with a library of supernova spectra using the "Supernova Identification" code
(Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2014bj is most
similar to the type-Ia supernova 1989B at 12 days post-maximum light.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 June 13                     (CBET 3893)              Daniel W. E. Green