[IAUC] CBET 1606: 20081206 : SUPERNOVAE 2008hj, 2008hn, 2008hq, 2008hr, 2008ht, 2008hu, 2008hx

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                                                  Electronic Telegram No. 1606
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)
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SUPERNOVAE 2008hj, 2008hn, 2008hq, 2008hr, 2008ht, 2008hu, 2008hx
     Further to CBET 1600, S. B. Cenko, W. Li, and A. V. Filippenko,
University of California, report the LOSS discovery of an apparent
supernova on unfiltered KAIT images:

 SN       2008 UT       R.A. (2000.0) Decl.      Mag.      Offset
 2008hx   Dec. 3.53   10 13 00.82  +17 02 09.3   18.7    6".9 W, 6".3 N

Additional KAIT magnitudes for 2008hx in NGC 3154:  a combined image from
Apr. 2 to May 17 UT, [20.1; Dec. 4.50, 18.9.  Li et al. also report
the following KAIT magnitudes for SN 2008hj (cf. CBETs 1579, 1583, 1585):
Oct. 25.22, [19.2; Nov. 17.22, 19.2 (limiting mag 19.8); Dec. 3.19, 17.1.
Their measured position for 2008hj is R.A. = 10h13m00s.82, Decl. =
+17o02'09".3 (equinox 2000.0), which is 6".9 west and 6".3 north of the
center of MCG -02-1-14.
     J. M. Silverman, F. J. D. Serduke, X. Wang, and A. V. Filippenko,
University of California, Berkeley, report that inspection of CCD spectra
(range 330-1000 nm), obtained on Dec. 5 UT with the 3-m Shane reflector (+
Kast) at Lick Observatory, shows that 2008hn (CBET 1586) is a normal
type-Ic supernova.  Cross-correlation with a library of supernovae spectra
using the "SuperNova IDentification" code (SNID; Blondin and Tonry 2007,
Ap.J. 666, 1024) indicates that it is about 10 days past maximum brightness.
SN 2008hq (CBET 1593) is a normal type-Ia supernova.  SNID indicates that
2008hq is about 8 days past maximum and most similar to the normal type-Ia
supernova 1995E at 7 days past maximum; after removal of a recession
velocity of 19600 km/s, determined from narrow emission lines in a
spectrum of the host galaxy (UGC 3963), the absorption minimum of the line
Si II 635.5-nm feature is found to be blueshifted by about 10900 km/s.
SN 2008hr (CBET 1595) is a normal type-Ia supernova; SNID indicates that it
is at maximum, at a recession velocity of about 24000 km/s, and most
similar to the normal type-Ia supernova 1992A at maximum.  SN 2008ht (CBET
1600) is a normal type-Ib supernova; SNID indicates that it is about 10 days
past maximum.  SN 2008hu (CBET 1600) is a normal type-Ia supernova; SNID
indicates that it is at maximum, at a recession velocity of about 12000 km/s,
and most similar to the normal type-Ia supernova 1991M at three days past
maximum.  SN 2008hx (see above) is a type-II supernova.  SNID indicates
that 2008hx is about two months past maximum and most similar to the normal
type-IIP supernova 2006bp at 65 days past maximum; after removal of the
host-galaxy recession velocity of 6300 km/s, determined from narrow
emission lines, the absorption minimum of the H-alpha line is found to be
blueshifted by about 6000 km/s.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2008 CBAT
2008 December 6                  (CBET 1606)              Daniel W. E. Green