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PESSTO spectroscopic classification of optical transients

ATel #6091; J. Polshaw (Queen's University Belfast), S. Benitez, S. Taubenberger (MPA Garching), S. Smartt (Queen's University Belfast), M. Fraser (University of Cambridge), J. Anderson (ESO Chile), N. Elias-Rosa, S. Benetti, A. Pastorello, E. Cappellaro (INAF - Padova Astronomical Observatory), C. Inserra, K. Smith, D. Young (Queen's University Belfast), M. Sullivan (University of Southampton), S. Valenti (LCOGT/UCSB), O. Yaron, I. Manulis, A. Gal-Yam (Weizmann Institute for Science), C. Knapic, R. Smareglia, M. Molinaro (INAF - Trieste Astronomical Observatory), C. Baltay, N. Ellman, E. Hadjiyska, R. McKinnon, D. Rabinowitz, E. S. Walker (Yale University), U. Feindt, M. Kowalski (Universitaet Bonn), P. Nugent (LBL Berkeley)
on 23 Apr 2014; 19:10 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Stefan Taubenberger (tauben@mpa-garching.mpg.de)

Subjects: Optical, Supernovae

Referred to by ATel #: 6092

PESSTO, the Public ESO Spectroscopic Survey for Transient Objects (see Valenti et al., ATel #4037; http://www.pessto.org ), reports the following supernova classifications. Targets were supplied by the La Silla-Quest survey (see Baltay et al. 2013, PASP, 125, 683) and the Catalina Real-time Transient Survey (http://crts.caltech.edu/). All observations were performed on the ESO New Technology Telescope at La Silla in the night starting on 2014 April 22 UT, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and GELATO (Harutyunyan et al., 2008, A&A, 488, 383). Classification spectra can be obtained from http://www.pessto.org (via WISeREP).

 
Name                    | RA (J2000)  | Dec (J2000) | Disc. Date | Disc. Source | Disc Mag |   z   | Type | Phase                    | Notes
LSQ14axu | 14 45 11.86 | -19 58 52.6 | 20140409 | LSQ | 19.9 | | | | (1) LSQ14ayl | 12 57 35.20 | -14 36 31.7 | 20140409 | LSQ | 19.5 | 0.06 | Ic | 2 weeks after maximum | (2) LSQ14azl | 14 17 33.44 | -30 10 20.7 | 20140413 | LSQ | 17.9 | | | | (3) LSQ14bdg | 19 52 59.51 | -58 48 42.3 | 20140421 | LSQ | 19.3 | 0.070 | Ia | +1d | (4) LSQ14bdw | 15 24 47.92 | -13 16 02.4 | 20140421 | LSQ | 19.5 | 0.10 | Ia | -3d | (5) SNhunt241 | 14 19 28.91 | -05 37 36.0 | 20140420 | SNhunt | 20.2 | 0.035 | II | 2-3 weeks past explosion | (6) CSS140407:170408+090904 | 17 04 08.38 | +09 09 04.3 | 20140407 | CRTS | 18.1 | | | | (7) CSS140421:142042+031602 | 14 20 41.71 | +03 16 01.5 | 20140421 | CRTS | 18.1 | 0.07 | Ibn | 2 weeks after maximum | (8)

(1) Very noisy spectrum. Blue continuum, with a possible broad emission feature at 8800A.
(2) Good match with SN 2004aw at +12d.
(3) Featureless blue continuum, spectrum too noisy to identify weak lines.
(4) Normal SN Ia. SN 2004ef at +1d gives an excellent match.
(5) SN Ia, probably 91T- or 99aa-like. Good match with SN 1999aa at -3d.
(6) Good match with SN 1999em 16d after explosion.
(7) Not visible in acquision image.
(8) Very similar to spectra of SN 2006jc taken between 2006 October 12 and 18.