[IAUC] CBET 622: 20060917 : SUPERNOVAE 2006eu AND 2006ev

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                                                  Electronic Telegram No. 622
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 2006eu AND 2006ev
     S. Blondin, M. Modjaz, R. Kirshner, and P. Challis,
Harvard-Smithsonian Center for Astrophysics, report that spectra
(range 350-740 nm) of SN 2006eu (cf. IAUC 8745) and SN 2006ev
(cf. IAUC 8747), obtained on Sept. 16.20 and 16.26 UT by M. Calkins
with the F. L. Whipple Observatory 1.5-m telescope (+ FAST), shows
them to be both type-Ia supernovae.  Cross-correlation with a
library of supernova spectra shows that 2006eu is most similar to
the 1991bg-like supernova 1998bp (cf. IAUC 6891) at +13.4 days from
maximum light, and that 2006ev is most similar to SN 1992A (Kirshner
et al. 1993, Ap.J. 415, 589) at +3.3 days.  Adopting a recession
velocity of 7071 km/s for the host galaxy of SN 2006eu (from Huchra
et al. 1999, Ap.J. Suppl. 121, 287), the maximum absorption in the
Si II line (rest 635.5 nm) is blueshifted by roughly 11000 km/s.
Adopting a recession velocity of 8576 km/s for the host galaxy of
2006ev (from http://tdc-www.harvard.edu/uzc/), the maximum
absorption in the Si II line (rest 635.5 nm) is blueshifted by
roughly 12000 km/s.


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                         (C) Copyright 2006 CBAT
2006 September 17                (CBET 622)               Daniel W. E. Green