[IAUC] CBET 1864: 20090630 : SUPERNOVAE 2009gv-2009gz

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                                                  Electronic Telegram No. 1864
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 2009gv-2009gz
     D. Sand, Harvard-Smithsonian Center for Astrophysics (CfA) and Las
Cumbres Observatory Global Telescope Network; M. L. Graham and C. Bildfell,
University of Victoria; D. W. Just, S. Herbert-Fort, and S. Sivanandam,
Steward Observatory; C. J. Pritchet, University of Victoria; H. Hoekstra,
Leiden University; D. Zaritsky, Steward Observatory; and A. Seth, CfA,
report that five more supernovae (cf. CBET 1796) were discovered on g'- and
r'-band images obtained at the Canada-France-Hawaii Telescope (+ Megacam).
Auxiliary imaging/photometry was obtained with the Steward Observatory 2.3-m
reflector (+ 90Prime imager).  All spectroscopy was obtained with the MMT at
Mount Hopkins using the Blue-Channel Spectrograph on June 15.  The publicly
available Supernova Identification code of Blondin and Tonry (2007, Ap.J.
666, 1024) was utilized for determining spectroscopic types.  SNe 2009gw
(roughly four weeks past maximum) and 2009gy (roughly three weeks past
maximum) are normal type-Ia supernovae; the rest are normal type-IIP
supernovae.  Redshifts:  2009gv, z = 0.065; 2009gw, 0.11; 2009gx, 0.077;
2009gy, 0.11; 2009gz, 0.106.

 SN       2009 UT     R.A. (2000.0) Decl.       g'     r'    Offset
 2009gv   May  22   13 48 38.39  +26 22 20.5   20.9   20.9   2".03 W, 2".04 N
 2009gw   May  22   15 22 13.62  +27 58 01.3   20.7   20.1   0".62 W, 3".36 S
 2009gx   May  23   12 57 23.41  - 4 33 51.1   19.8   19.7   3".6 E, 3".4 S
 2009gy   May  23   22 11 51.33  -12 20 32.2   19.2   19.3   2".32 E, 1".00 N
 2009gz   May  24   22 25 07.38  +17 35 02.6   21.9   22.0   2".80 W, 1".64 N

Additional "90Prime" magnitudes for 2009gv:  May 25, g' = 21.0, r' = 20.9.
The host galaxy for 2009gv has magnitudes g' = 20.6 and r' = 20.2.
Additional Megacam magnitudes for 2009gw:  June 20, g' = 23.2, r' = 21.3.
The host galaxy for 2009gw has magnitudes g' = 19.2 and r' = 18.6.
The host galaxy for 2009gx has magnitudes g' = 23.4 and r' = 25.1.
Additional Megacam magnitudes for 2009gy:  June 17, g' = 21.1, r' = 20.2.
The host galaxy for 2009gy has magnitudes g' = 16.9 and r' = 16.3.
Additional Megacam magnitudes for 2009gz:  June 17, g' = 22.5, r' = 22.0.
The host galaxy for 2009gz has magnitudes g' = 18.0 and r' = 17.5.


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                         (C) Copyright 2009 CBAT
2009 June 30                     (CBET 1864)              Daniel W. E. Green