[IAUC] CBET 588: 20060726 : SUPERNOVA 2006dz IN NGC 5185

Vie Jun 22 17:06:24 ART 2007

                                                  Electronic Telegram No. 588
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
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SUPERNOVA 2006dz IN NGC 5185
     C. Contreras and G. Folatelli, on behalf of the Carnegie Supernova
Project, report the discovery of an apparent supernova present on Sloan
u', g', r', i', and Johnson-Cousin B and V CCD images obtained between
May 31 and June 12 with the 2.5-m du Pont telescope and the 1-m Swope
telescope, both at Las Campanas Observatory.  The new object is located
at R.A. = 13h30m00s.37, Decl. = +13o24'43".1 (equinox 2000.0), which is
30" west and 15" south of the nucleus of NGC 5185.  This occurred almost
simultaneously with the brighter supernova 2006br in the same host galaxy
(cf. IAUC 8705).  Nothing is visible at the location of 2006dz on images
obtained with the Swope telescope on May 17 (limiting r' magnitude > 21.7
at 3-sigma level).  The available magnitudes (after subtracting SDSS
images of the host galaxy around the supernova) for 2006dz are tabulated
below.  The "e" columns in the table are statistical uncertainties in
magnitudes, as estimated from photon statistics on the images.

2006 UT        g'   e(g')     r'   e(r')    i'   e(i')   Telescope

May  31.14   21.15  0.03    20.04  0.02   19.69  0.02    du Pont
June  4.10   20.02  0.03    19.02  0.02   18.74  0.02    Swope
June  5.15   19.92  0.05    18.97  0.02   18.69  0.02    Swope
June  7.10   19.97  0.02    18.93  0.02   18.61  0.02    du Pont
June  8.09   20.08  0.04    18.94  0.02   18.60  0.02    du Pont
June 11.07   20.27  0.04    19.00  0.02   18.64  0.02    du Pont
June 12.09   20.40  0.05    19.05  0.02   18.70  0.02    du Pont

Discovery images and graphs of the light curves can be seen at
http://csp1.lco.cl/~cspuser1/objX/


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 July 26                     (CBET 588)               Daniel W. E. Green