[IAUC] CBET 748: 20061121 : SUPERNOVA 2006oq

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                                                  Electronic Telegram No. 748
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 2006oq
     E. J. Christensen, Lunar and Planetary Laboratory, reports the
discovery of an apparent supernova (mag V about 15.8) on four unfiltered
Catalina Sky Survey (CSS) images taken during Nov. 17.484-17.502 UT.  The
new object, designated 2006oq, is located at R.A. = 11h44m00s.07, Decl. =
+19o58'38".3 (equinox 2000.0), which is 31" west and 17" north of the
center of a galaxy located at position end figures 02s.29, 20".9 (but there
are numerous nearby cluster galaxies).  Nothing is visible at the position
of 2006oq on a Digitized Sky Survey plate taken 1955 Apr. 24 or in a
combined CSS image of 24 exposures obtained between March 2005 and April
2006 (limiting magnitude of V approximately 21.5).
     S. Blondin, M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 350-740 nm) of
2006oq, obtained on Nov. 21.57 UT by W. Peters with the F. L. Whipple
Observatory 1.5-m telescope (+ FAST), shows it to be a type-Ia supernova
around two weeks past maximum light.  Cross-correlation with a library of
supernova spectra indicates that 2006oq is most similar to the type-Ia
supernova 1989B at +14 days from maximum light, at an approximate redshift
cz = 6600 +/- 1500 km/s.  Adopting this recession velocity for the
supernova, the maximum absorption in the Si II line (rest 635.5 nm) is
blueshifted by roughly 11000 km/s.


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                         (C) Copyright 2006 CBAT
2006 November 21                 (CBET 748)               Daniel W. E. Green