[IAUC] CBET 1889: 20090730 : SUPERNOVAE 2009hn, 2009ho, AND 2009hp

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                                                  Electronic Telegram No. 1889
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2009hn, 2009ho, AND 2009hp
     T. N. Steele, B. E. Cobb, W. Li, J. M. Silverman, R. Chornock, and A. V.
Filippenko, University of California, Berkeley, report that inspection of
CCD spectra (range 340-1070 nm), obtained on July 28 UT with the 3-m Shane
reflector (+ Kast) at Lick Observatory, shows that 2009ho (CBET 1886) in UGC
1941 is a type-Ia supernova about two weeks after maximum light.  Cross-
correlation with a library of supernova spectra using the SuperNova
IDentification code (SNID; Blondin and Tonry 2007, Ap.J. 666, 1024) finds a
best match with SN 2002cx at 10 days, but the low-S/N ratio of the spectrum
precludes a definitive identification with the 2002cx-like subclass of
supernovae (Li et al. 2003, PASP, 115, 453).  Further observations of 2009ho
are encouraged, and including a redshift determination for the host.  Also,
2009hn (CBETs 1886, 1887) in UGC 2005 is confirmed to be a normal type-Ia
supernova; cross-correlation with a library of supernova spectra using SNID
indicates that 2009hn is about four weeks after maximum light.  SN 2009hp
(CBET 1888) is a normal type-Ia supernova; cross-correlation with a library
of supernova spectra using SNID indicates that 2009hp near maximum light.
     P. Challis, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf
of the CfA Supernova Group, reports that a spectrum (range 360-750 nm) of
2009hp in MCG +01-08-30, obtained on July 29 UT by M. Calkins with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST), shows it to be a type-Ia
supernova.  Cross-correlation with a library of supernova spectra using the
SNID code indicates that 2009hp is a normal-Ia supernova about a week before
maximum brightness.


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                         (C) Copyright 2009 CBAT
2009 July 30                     (CBET 1889)              Daniel W. E. Green