[IAUC] CBET 1673: 20090126 : SUPERNOVA 2009N IN NGC 4487

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Lun Ene 26 21:49:33 ARST 2009


                                                  Electronic Telegram No. 1673
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVA 2009N IN NGC 4487
   [Editor's note:  this text replaces that on CBET 1671.]
     P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf
of the CfA Supernova Group, reports that a spectrum (range 320-850 nm) of
2009N (cf. CBET 1670), obtained on Jan. 25 UT by P. Berlind with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-II
supernova.  Cross-correlation with a library of supernova spectra using the
"Supernova Identification" code (SNID; Blondin and Tonry 2007, Ap.J. 666,
1024) indicates that the spectrum of 2009N best matches the spectrum of the
type-IIP supernova 2005cs at two days after maximum light.
     W. Wells, Oklahoma City, reports magnitude V = 16.2 +/- 0.1 from an image
taken remotely using a 25.4-cm reflector at Moorook, Australia, on Jan.
25.737 UT; he has posted the image at the following website URL:
http://www.flickr.com/photos/32839122@N02/3226678886/.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 January 26                  (CBET 1673)              Daniel W. E. Green



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