2009CBET.1864....1S

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.