[IAUC] CBET 2551: 20101117 : SUPERNOVAE 2010jx, 2010jy, 2010jz, 2010ka, 2010kb

Mie Sep 14 16:19:26 ART 2011

                                                  Electronic Telegram No. 2551
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


SUPERNOVAE 2010jx, 2010jy, 2010jz, 2010ka, 2010kb
     A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams,
California Institute of Technology; T. A. Fatkhullin, V. N. Komarova, A. S.
Moskvitin, V. V. Sokolov, and T. N. Sokolova, Special Astrophysical
Observatory (SAO), Russian Academy of Sciences; J. L. Prieto, Carnegie
Observatories; M. Catelan, Pontificia Universidad Catolica de Chile; E. C.
Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of
Arizona; and E. Christensen, Gemini Observatory, report the discovery of
five supernovae in unfiltered Catalina Sky Survey (CSS) images:

 SN       2010 UT        R.A. (2000.0) Decl.      Mag.      Offset
 2010jx   Oct. 28.19    1 19 42.22  +30 24 49.2   19.2    0".9 W, 0".7 N
 2010jy   Oct. 30.15   23 09 43.58  + 5 41 56.2   16.5    6".6 E, 1".6 S
 2010jz   Nov.  2.40    7 17 15.74  +45 23 03.7   18.0    4".5 W, 1".5 N
 2010ka   Nov.  7.35    3 26 01.99  - 0 49 48.0   19.4    0".6 W, 1".6 N
 2010kb   Nov. 10.43    8 20 47.41  +35 53 37.5   18.1    0".9 W, 0".7 N

Further CSS magnitudes of 2010jx:  Oct. 9.30 UT, [20.3; 17.30, 19.0; Nov.
11.27, 19.9.  Further CSS magnitudes of 2010jy:  Sept. 10.37, [19.8; 30.28,
17.2; Nov. 12.24, 16.9.  Further CSS magnitudes of 2010jz:  Oct. 10.41,
[20.1; Nov. 11.36, 17.9.  Further CSS magnitudes of 2010ka:  Oct. 30.40,
[20.2; Nov. 16.30, 19.3.  Further CSS magnitudes of 2010kb:  Oct. 17.46,
[19.2; Oct. 31.50, 18.8.
     The supernovae were spectroscopically confirmed with SAO's BTA 6-m
reflector (+ SCORPIO; range 380-790 nm) on Nov. 9 and 10.  SN 2010kb
exhibits a steep blue continuum and narrow Balmer emission lines
characteristic of a type-IIn supernova at redshift z = 0.075.  Cross-
correlation of the remaining objects with a library of supernova spectra using
the "Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666,
1024) indicates the following best matches:  2010jx is a type-Ia supernova,
similar to SN 1995al at two weeks past maximum with redshift z = 0.11; 2010jy
is a type-IIn supernova, similar to SN 1998S at two weeks past maximum with
redshift z = 0.042; 2010jz is a type-Ia supernova, similar to 1995D just past
maximum at redshift z = 0.066; and 2010ka is a type-Ia supernova, similar to
2003du just past maximum at redshift z = 0.166.


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

                         (C) Copyright 2010 CBAT
2010 November 17                 (CBET 2551)              Daniel W. E. Green