[IAUC] CBET 984: 20070623 : SUPERNOVA 2007cq

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                                                  Electronic Telegram No. 984
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 2007cq
     A. V. Filippenko, D. S. Wong, and M. Ganeshalingam, University of
California, Berkeley, report that CCD spectra (range 340-1000 nm),
obtained on June 23 UT with the 3-m Shane telescope at Lick Observatory,
show that 2007cq (IAUC 8851) is a type-Ia supernova -- specifically of
the SN-1999aa variety (Li et al. 2001, Ap.J. 546, 734; Garavini et al.
2004, A.J. 128, 387) -- possibly up to a week before maximum brightness.
The spectrum redward of 520 nm is relatively featureless, with only weak
Si II 635.5-nm and Ca II triplet absorption.  Removing the recession
velocity of 7770 km/s found from the host-galaxy spectrum, the minimum of
the 635.5-nm Si II absorption is blueshifted by about 10400 km/s.


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                         (C) Copyright 2007 CBAT
2007 June 23                     (CBET 984)               Daniel W. E. Green