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Discovery and Confirmation of Supernovae from PQ and CRTS

ATEL # 1778; A. Mahabal, A.J. Drake, S.G. Djorgovski (Caltech); M. Catelan (PUC); M. J. Graham, E. Glikman, C. Donalek, R. Williams (Caltech); E.C. Beshore, S.M. Larson (LPL); E. Christensen (Gemini Obs); C. Baltay, D. Rabinowitz, R. Scalzo (Yale) and the PQ team
on 12 Oct 2008; 6:11 UT
Password Certification: Andrew J. Drake (

Subjects: Optical, Request for Observations, Nova, Supernova, Transients
Referred to by ATEL #: 1801

We have discovered supernovae in data from the Catalina Real-time Transient Survey (CRTS) and the Palomar-Quest digital sky survey (PQ). These objects were spectroscopically observed with Palomar 200" and SMARTS 1.5m on Oct 1st and have the following J2000 coordinates.

ID RA Dec Telescope
PQT081001:230004+105741 23:00:04.8 +10:57:41.8 P200
CSS080921:230620+094038 23:06:20.0 +09:40:37.6 P200
CSS080924:040630+145214 04:06:29.5 +14:52:13.9 SMARTS

Analysis of these spectra is on-going. Further to ATel#1734, supernova CSS080922:231617+114248 (SN 2008fz, CBET#1524) appears to be an superluminous event like 2006gy (Benetti et al. CBET#1533). The P200 spectrum from Oct 1st is consistent with a SN II near maximum, and a spectrum of this object taken with SMARTS 1.5m on Sept. 27th exhibits no strong features. CSS080924:040630+145214 has a noisy spectrogram. Supernovae CSS080921:230620+094038 and CSS080922:231617+114248 (SN 2008fz) were independently discovered in the automated real-time transient analysis of both CRTS and PQ experiments. Additional follow-up is requested.

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R. E. Rutledge , Editor
ATEL Mirror v1.0 Updates