[IAUC] CBET 1511: 20080923 : SUPERNOVA 2008dy

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Mar Sep 23 18:09:30 ART 2008


                                                  Electronic Telegram No. 1511
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 2008dy
     N. Morrell and M. Hamuy, on behalf of the Carnegie Supernova Project and
Millenium Center for Supernova Astrophysics collaboration, report that a
spectrogram (range 380-940 nm) of 2008dy (cf. CBET 1428) was obtained on
Sept. 17.14 UT with the 6.5-m Magellan II (Clay) telecope (+ LDSS3) at Las
Campanas Observatory.  The spectrum shows strong P-Cyg features identified
with H_alpha and the Ca II triplet.  Comparison with a library of supernova
spectra, via the "Supernova Identification" code (Blondin and Tonry 2007,
Ap.J. 666, 1024) suggests that 2008dy is a type-II supernova at roughly two
months after explosion.


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                         (C) Copyright 2008 CBAT
2008 September 23                (CBET 1511)              Daniel W. E. Green



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