[IAUC] CBET 1745: 20090329 : SUPERNOVA 2009bu IN NGC 7408

IAUC mailing list quai en cfa.harvard.edu
Dom Mar 29 20:29:32 ART 2009


                                                  Electronic Telegram No. 1745
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)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2009bu IN NGC 7408
     N. Morrell and M. Stritzinger, on behalf of the Carnegie Supernova
Project, report a that spectrum (range 380-923 nm) of 2009bu (cf. CBET 1740),
obtained on Mar. 29.4 UT with the Las Campanas 2.5-m du Pont telescope (+
WFCCD), reveals it to be a young type-II supernova.  Comparison with a
library of supernova spectra via the Supernova Identification tool (SNID;
Blondin and Tonry 2007, Ap.J. 666, 1024) gives an excellent match with
several type II-P events within 1 to 5 days past explosion.  Adopting a
host-galaxy recession velocity of 3494 km/s (H I Parkes All-Sky Survey Final
Catalogue, Wong et al. 2006, MNRAS 371, 1855) for the host galaxy, NGC 7408,
the minimum of the H-beta absorption is measured to be blue-shifted by
9500 km/s.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 March 29                    (CBET 1745)              Daniel W. E. Green



Más información sobre la lista de distribución Iauc