Spectroscopic Classification of 3 Supernovae with WiFeS

ATel #5455; M. Childress, R. Scalzo, F. Yuan, B. Schmidt (Australian National University), B. Tucker (Australian National University and University of California Bekerley)
on 9 Oct 2013; 04:46 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Michael Childress (mjc@mso.anu.edu.au)

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We report spectroscopic classification of three supernovae with the Wide Field Spectrograph (WiFeS - Dopita et al., 2007, ApSS, 310, 255) on the ANU 2.3m telescope at Siding Spring Observatory, NSW Australia, using the B3000/R3000 gratings (3500-9800 A, 1 A resolution). Classification was performed with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024). Best matches to each SN are listed in notes of the table below.

 
 Name                   | RA (J2000)   | Dec (J2000)  | Disc. Date | Disc. Source    | Disc Mag  |   z   |  Type |  Phase       | Notes
 
 PSNJ23194467+1011045   | 23 19 44.67  | +10 11 04.5  |  20131007  | Itagaki         | 16.5      | 0.012 |  IIn? |  very young  | (1) 
 PSNJ23413520+0343305   | 23 41 35.20  | +03 43 30.5  |  20130913  | LOSS            | 18.6      | 0.009 |  IIP  |  +13         | (2) 
 OGLE-2013-SN-070       | 00 45 14.41  | -66 19 50.6  |  20130910  | OGLE            | 16.3      | 0.043 |  Ia   |  +33         | (3) 

(1) Extremely blue, nearly featureless continuum, consistent with very young SN. Shows slightly broadened emission in Halpha and Hbeta at z=0.012, possibly indicating IIn classification.

(2) Best match to SN 2005cs at +13, narrow host emission at z=0.0096. Clear P-Cygni Halpha.

(3) Best match to SN 2004ef at +33 days at z=0.043.