[IAUC] CBET 2658: 20110227 : SUPERNOVA 2011ae IN MCG -03-30-19 = PSN J11544925-1651436

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                                                  Electronic Telegram No. 2658
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)
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Prepared using the Tamkin Foundation Computer Network


SUPERNOVA 2011ae IN MCG -03-30-19 = PSN J11544925-1651436
     S. Howerton, Arkansas City, KS, U.S.A.; A. J. Drake, S. G. Djorgovski,
A. Mahabal, M. J. Graham, and R. Williams, California Institute of Technology;
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 Catalina Real-time Transient Survey's discovery of an apparent
supernova in public images from the Catalina Sky Survey (CSS).

 SN       2011 UT        R.A. (2000.0) Decl.      Mag.      Offset
 2011ae   Feb. 12.43   11 54 49.25  -16 51 43.6   15.5    4".9 W, 8".4 N

Further unfiltered CCD magnitude estimates for 2011ae:  Feb. 5.46 UT, [18.5
(CSS); 13.41, 15.3 (remotely with the LB3 0.35-m telescope at Rodeo, NM,
U.S.A.).  Drake writes that the presumed host galaxy has redshift z = 0.0060.
The object was given the designation PSN J11544925-1651436 when posted by
Drake on the Central Bureau's TOCP webpage, and based on the spectroscopy
below is here assigned the final designation SN 2011ae.

     D. K. Sahu, S. Arora, and P. Anto, Indian Institute of Astrophysics,
Bangalore, report that a low-resolution spectrogram (range 350-930 nm) of
2011ae, obtained on Feb. 21.75 UT with the Indian Astronomical Observatory's
2-m Himalayan Chandra Telescope (+ HFOSC), shows it to be a normal type-Ia
supernova, a few days before maximum light.  Using the SNID code of Blondin
and Tonry (2007, Ap.J. 666, 1024), the spectrum of 2011ae is found to best
match that of SN 1990N at about 5 days before maximum light.  Adopting a
recession velocity of 1813 km/s for the presumed host galaxy (de Vaucouleurs
et al. 1991, Third Reference Catalogue of Bright Galaxies), MCG -03-30-19,
the velocity corresponding to the Si II 635.5-nm absorption line is 12500 km/s.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2011 CBAT
2011 February 27                 (CBET 2658)              Daniel W. E. Green