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2 New Supernova Discoveries/Classifications

ATEL # 2255; Peter Nugent (Lawrence Berkeley National Laboratory), Mark Sullivan (University of Oxford) & D. Andrew Howell (LCOGT/UCSB)
on 23 Oct 2009; 22:44 UT
Distributed as an Instant Email Notice (Supernova)
Password Certification: Peter Nugent (

Subjects: Optical, Ultra-Violet, Nova, Supernova

The Type Ia supernova science working group of the Palomar Transient Factory (ATEL#2174) reports the discovery of two nearby supernova, PTF09fox and PTF09foz. Confirmation spectra were taken with DEIMOS on the Keck II telescope by K. Chiu and with GMOS on the Gemini-South telescope by D.A. Howell on October 21 UT, respectively. Classification of the spectra were carried out using Superfit (Howell et al. 2005). As both supernovae are prior to maximum light, STIS/UV spectroscopic observations on the Hubble Space Telescope were triggered by the ToO program "Verifying the Utility of Type Ia Supernovae as Cosmological Probes: Evolution and Dispersion in the Ultraviolet Spectra " (PI: R. Ellis). We strongly encourage additional follow-up of these sources at all wavelengths.

         Name      RA            Dec         z     phase     disc     mag (R-band)    ----------------------------------------------------------------------------   PTF09fox 23:20:48.009  +32:30:08.60  0.07     -7     Oct 19.6      18.8   PTF09foz 00:42:11.719  -09:52:52.47  0.05     -8     Oct 19.8      18.8   

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