[IAUC] CBET 2059: 20091129 : SUPERNOVAE 2009lz, 2009ma, AND 2009mb

Dom Nov 29 10:59:36 ART 2009

                                                  Electronic Telegram No. 2059
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2009lz, 2009ma, AND 2009mb
     Further to CBET 2048, E. Christensen, Gemini Observatory; A. J. Drake,
S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams, California
Institute of Technology; M. Catelan, Pontificia Universidad Catolica de Chile;
and E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University
of Arizona, report the CRTS discovery of three supernovae in unfiltered
Catalina Sky Survey (CSS) images.  Confirmation spectra were obtained using
the Gemini North and South 8-m telescopes.

    SN        2009  UT       R.A. (2000.0) Decl.       Mag.
    2009lz    Sept. 25.23    0 12 59.46  +14 41 21.3   18.8
    2009ma    Oct.  17.48    8 28 58.20  - 0 35 12.3   18.2
    2009mb    Oct.  18.49    9 11 09.20  +19 59 45.2   19.0

     SN 2009lz was observed on Nov. 9.02 UT; cross-correlation with a
library of supernova spectra using the "Supernova Identification" code
(Blondin and Tonry 2007, Ap.J. 666, 1024) showed 2009lz to be a type-IIp
supernova most similar to SN 2006bp at seven days past maximum light with
redshift z = 0.05.  2009lz has evidence for a faint, uncatalogued host
galaxy in Sloan Digital Sky Survey (SDSS) images.  Additional CSS magnitudes
for 2009lz:  Sept. 10.45, [20.1; Oct. 10.19, 19.0.
     SN 2009ma was observed on Nov. 8.36 and exhibits the strong narrow
Balmer lines of a type-IIn supernova at z = 0.089.  SN 2009ma has no host
galaxy visible in Digitized Sky Survey, Palomar Quest, and SDSS images;
additional CSS magnitudes for 2009ma:  Apr. 20.13, [20.5; Nov. 21.51, 18.7.
     SN 2009mb was observed on Nov. 16.64 and found to exhibit strong
Balmar lines, clearly showing it to be a type-IIn supernova at redshift z
= 0.154.  The host galaxy of 2009mb is seen in SDSS images and has Gunn
magnitudes u = 24.0, g = 22.8, r = 21.7, i = 21.5, z = 21.2; additional
CSS magnitudes for 2009mb:  May 26.17, [20.2; Oct. 24.50, 19.1.


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                         (C) Copyright 2009 CBAT
2009 November 29                 (CBET 2059)              Daniel W. E. Green