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Phototyping of SN2004cs with the Palomar 60-inch telescope

ATel #320; A. Rajala, D. B. Fox, and A. Gal-Yam (Caltech)
on 12 Aug 2004; 13:52 UT
Credential Certification: Derek W. Fox (derekfox@mit.edu)

Subjects: Optical, Supernovae

We have observed SN2004cs (IAUC 8361 ) in the Johnson BVR and Gunn g bands with the robotic Palomar 60-inch (1.5-m) telescope + CCD imager. Data were obtained on June 24 UT, one night after the discovery report for SN2004cs, and calibrated with images obtained on July 30 UT. The derived magnitudes and uncertainties for SN2004cs on June 24.3 UT are: B=18.16(0.07) mag, V=18.06(0.07) mag, R=17.87(0.08) mag and g=18.23(0.05) mag. This combination of B-g and R-V colors is strongly suggestive of a type Ia identification for this event (see Gal-Yam et al. 2004, PASP, 116, 597; http://wise-obs.tau.ac.il/~dovip/typing, and references therein). For more details, please see the P60 Phototyping Webpage.

P60 Phototyping Webpage