[IAUC] CBET 562: 20060627 : SUPERNOVAE 2006de, 2006dg, AND 2006dh

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                                                  Electronic Telegram No. 562
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 2006de, 2006dg, AND 2006dh
     R. J. Foley, D. S. Wong, J. M. Silverman, T. N. Steele, and A. V.
Filippenko, University of California, Berkeley, report that inspection of
CCD spectra (range 330-1040 nm), obtained on June 26 UT with the Lick 3-m
telescope (+ Kast), shows that SN 2006de (cf. IAUC 8725) is of type II;
removing the recession velocity of 11770 km/s found from narrow lines, the
minimum of the H_alpha P-Cyg profile is measured to be blueshifted by 8100
km/s.  A spectrum of SN 2006dg (cf. IAUC 8725) shows it to be of type Ic,
approximately 2 months after maximum light.  A spectrum of SN 2006dh (cf.
IAUC 8725) shows it to be of type Ia, with a spectral-feature age (Riess
et al. 1997, A.J. 114, 722) of -0.6 +/- 2.0 days relative to maximum
light; removing the host-galaxy recession velocity of 18054 km/s (from the
Sloan Digital Sky Survey Data Release 4), the minimum of the Si II 635.5-nm
absorption is found to be blueshifted by 12100 km/s.


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                         (C) Copyright 2006 CBAT
2006 June 27                     (CBET 562)               Daniel W. E. Green