[IAUC] CBET 2933: 20111204 : SUPERNOVA 2011iq

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Dom Dic 4 01:56:55 ART 2011


                                                  Electronic Telegram No. 2933
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 2011iq
     Vladimir Lipunov reports the discovery of an optical transient (mag 18.3)
on unfiltered CCD images (limiting mag 20.3) taken by the MASTER-net auto-
detection system (see website URL (http://observ.pereplet.ru) at Kislovodsk,
Russia, on Oct. 29.36 UT using two 40-cm telescope tubes (+ Apogee CCD Alta
U16m camera; field-of-view 2 deg x 4 deg).  The new object is located at R.A.
= 2h48m49s.60, Decl. = -8d04'30".0 (equinox 2000.0, presumed).  A galaxy of
magnitude g = 21.3 in the Sloan Digital Sky Survey is very close to this
position.

     L. Tomasella, A. Pastorello, S. Valenti, and S. Benetti, Istituto
Nazionale di Astrofisica, Osservatorio Astronomico di Padova, on behalf of a
larger collaboration, report that a spectrogram of 2011iq, obtained on Nov.
28.01 UT with the Asiago 1.82-m Copernico Telescope (+ AFOSC; range 350-820
nm; resolution 2.4 nm), shows it to be a type-Ia supernova.  Cross-correlation
with a library of supernova spectra via the "Supernova Identification" code
(SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) indicates that 2011iq is a
type-Ia supernova about 20 days after maximum light at a redshift of about
0.015.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 December 4                  (CBET 2933)              Daniel W. E. Green



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