[IAUC] CBET 2543: 20101111 : SUPERNOVA 2010jo IN UGC 595

[quai en eps.harvard.edu]

                                                  Electronic Telegram No. 2543
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 2010jo IN UGC 595
     M. Koishikawa, Sendai Astronomical Observatory, reports the discovery
of an apparent supernova (mag 17.5) on a 180-s R-band exposure (limiting mag
19.0) taken on Nov. 6.580 UT with a 1.3-m f/4.85 reflector.  The new object,
which was found to be at mag 17.3 by Koishikawa on Nov. 6.608, is located at
R.A. = 0h57m35s.60 +/- 0s.03, Decl. = -1d23'33".0 +/- 0".5 (equinox 2000.0);
nothing was visible at this position on his image of UGC 595 taken the
previous night (Nov. 5.518; limiting mag 19.0).  Koishikawa reports V = 17.4
on Nov. 10.562 for 2010jo.  Koishikawa also reports that K. Itagaki obtained
unfiltered confirming CCD images of 2010jo on Nov. 6.608 with a 0.60-m f/5.7
reflector, yielding mag 17.3 and position end figures 35s.58, 33".4 (which
is offset 10" east and 6" south from the center of UGC 595).  Itagaki's image
is posted at website URL http://k-itagaki.jp/images/psn-ugc595.jpg.  After
posting on the Central Bureau's unconfirmed-objects webpage, C. Jacques and
E. Pimentel (Belo Horizonte, Brazil) write that they obtained a 120-s
unfiltered CCD image (limiting mag 17.8) on Nov. 7.02 remotely with a 43-cm
f/6.8 reflector at the Gras Observatory in Nerpio, Spain; from this, they
measured mag 16.8 and position end figures 35s.66, 33".6 -- adding that
nothing is visible at this position on a Digitized Sky Survey image from
1990 Aug. 28 (limiting red mag 19.0).

     G. H. Marion, P. Challis, and S. Meyer Harvard-Smithsonian Center for
Astrophysics (CfA), on behalf of the CfA Supernova Group, report that a
spectrum (range 340-740 nm) of 2010jo was obtained on Nov. 10 UT by P. Berlind
with the F. L. Whipple Observatory 1.5-m telescope (+ FAST).  Cross-correlation
with a library of supernova spectra using the "Supernova Identification" code
(SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) shows that the object is a
type-Ia supernova near maximum light.  The velocity of the Si II 635.5-nm
feature, measured at the absorption minimum, is 14200 km/s.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2010 CBAT
2010 November 11                 (CBET 2543)              Daniel W. E. Green