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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)

Subjects: Optical, Supernovae

Referred to by ATel #: 5458, 5527

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.