11 Supernova Discoveries

ATel #1137; The Nearby Supernova Factory: C. Buton, Y. Copin, E. Gangler, G. Smadja (Institut de Physique Nucleaire de Lyon), P. Antilogus, R. Pain, R. Pereira, C. Wu (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), G. Aldering, C. Aragon, S. Bailey, S. Bongard, M. Childress, S. Loken, P. Nugent, S. Perlmutter, K. Runge, R. C. Thomas, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), C. Baltay, A. Bauer, D. Rabinowitz, R. Scalzo (Yale University, New Haven, CT), G. Rigaudier, E. Pecontal (Centre de Recherche Astronomique de Lyon); and D. Birchall (Institute for Astronomy, University of Hawaii, Hilo, HI); and J. Holtzman (New Mexico State University, Las Cruces, NM)
on 10 Jul 2007; 20:14 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: R. C. Thomas (rcthomas@lbl.gov)

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The Nearby Supernova Factory reports the discovery of 11 supernovae in images obtained Jun 30 through Jul 08 UTC using the QUEST-II camera on the Palomar Oschin 48-inch telescope, operated by the Palomar-QUEST Consortium. Spectra (range 320-1000 nm) obtained with the SuperNova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope were used to classify each. R-band discovery magnitudes and J2000.0 coordinates are derived from comparison with the USNO-B1.0 catalog. The following table summarizes the discovered supernovae (dates are UTC).

  
Target Name          RA          Decl      Disc Date   Disc Mag  Spec Date  Type  Redshift 
  
SNF20070630-003  01:24:10.24   09:00:40.5   Jun 30.5     19.8    Jul 07.5   Ibc   0.05     
  
SNF20070630-009  14:16:19.03   36:13:01.3   Jun 30.2     19.5    Jul 07.3   Ia    0.07     
  
SNF20070630-010  14:25:56.09   46:26:56.9   Jun 30.2     18.7    Jul 07.3   II    0.03     
  
SNF20070703-007  22:16:41.64   21:18:58.9   Jul 03.4     19.2    Jul 04.4   Ia    0.08     
  
SNF20070703-008  14:07:36.67   38:40:49.3   Jul 03.2     18.1    Jul 07.3   II    0.03     
  
SNF20070705-007  15:44:16.87   34:43:13.7   Jul 05.3     19.7    Jul 09.3   Ia    0.12     
  
SNF20070706-003  22:14:25.37  -28:11:53.9   Jul 06.4     18.8    Jul 07.5   Ibc   0.06     
  
SNF20070708-001  01:09:56.61  -03:31:35.6   Jul 08.5     19.5    Jul 09.5   II    0.05     
  
SNF20070708-002  01:11:26.42  -02:41:16.8   Jul 08.5     19.9    Jul 09.5   II    0.06     
  
SNF20070708-003  15:50:35.90   43:46:32.9   Jul 08.3     19.6    Jul 09.3   IIn   0.04     
  
SNF20070708-004  02:29:28.36   31:28:33.0   Jul 08.5     18.0    Jul 09.6   Ibc   0.02     
  

Type Ia SN phases are as follows: SNF20070630-009 is 3-4 weeks after maximum, SNF20070703-007 is about one week after maximum, and SNF20070705-007 is at max. The host galaxy of the Type Ibc SNF20070708-004 is known to be UGC 01963 at z = 0.017 (de Vaucouleurs et al. 1991 RC3). This SN is similar to SN 2000H about 1 month after maximum.