[IAUC] CBET 1106: 20071023 : SUPERNOVA 2007nq IN UGC 595

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                                                  Electronic Telegram No. 1106
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 2007nq IN UGC 595
     R. Quimby, California Institute of Technology; F. Yuan and C. Akerloff,
University of Michigan; and J. C. Wheeler, University of Texas, report the
discovery of a supernova (mag about 17.6) in unfiltered CCD images taken on
Oct. 21.15 UT using the 0.45-m ROTSE-IIIb telescope at the McDonald
Observatory.  The new object is located at R.A. = 0h57m33s.57, Decl. =
-1o23'19".0 (equinox 2000.0), which is 20".2 west and 8".9 north of the
center of UGC 595; it was found by subtracting a co-addition of images
taken between Aug. 10 and 16 (limiting mag about 19.2).  A spectrum (range
420-890 nm) of 2007nq obtained on Oct. 23.19 with the 9.2-m Hobby-Eberly
Telescope (+ Marcario Low-Resolution Spectrograph) by M. Shetrone, E.
Terrazas, and V. Riley shows it to be a type-Ia supernova, similar to SN
1992A prior to maximum light (Kirshner et al. 1993, Ap.J. 415, 589).
Adopting the host-galaxy redshift of z = 0.045, the expansion velocity,
derived from the minimum of the Si II (rest 635.5 nm) line, is 12500 km/s.


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                         (C) Copyright 2007 CBAT
2007 October 23                  (CBET 1106)              Daniel W. E. Green