PESSTO spectroscopic classification of optical transients
ATel #4880; Nadia Blagorodnova (IoA, Cambridge), Matt Nicholl (Queen's University Belfast), Simon Hodgkin (IoA, Cambridge), Cosimo Inserra, Joe Polshaw, Morgan Fraser (Queen's University Belfast), S. Benetti, A. Pastorello, (INAF - Padova Astronomical Observatory), S. Valenti (LCOGT/UCSB), S. Taubenberger (MPA Garching), S. J. Smartt, K. Smith, D. Young (Queen's University Belfast), M. Sullivan (University of Southampton), A. Gal-Yam, O. Yaron (Weizmann Institute for Science), Lukasz Wyrzykowski (OGLE).
on 12 Mar 2013; 16:53 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Cosimo Inserra (c.inserra@qub.ac.uk)
Subjects: Optical, Supernovae
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
Catalina Real-time Transient Survey
(http://crts.caltech.edu/), and the OGLE-IV Transient Search
(see Wyrzykowski et al., ATEL #4495). All observations were performed on the ESO
New Technology Telescope at La Silla on 2013 March 11, 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
OGLE-2013-SN-018 | 04:39:13.81 | -67:23:36.4 | 20130303 | OGLE | 19.0 | 0.067 | Ia | ~10d | (1)
SSS130311:130508-375705 | 13:05:07.64 | -37:57:04.8 | 20130311 | CRTS | 16.9 | 0.015 | Ia | ~50d | (2)
PSNJ09271379-1931599 | 09:27:13.78 | -19:31:59.9 | 20130309 | TOCP | 17.0 | 0.016 | IIP | ~30d | (3)
(1) Good match with several Type Ia at 10d after maximum light.
It has a very red continuum and hence seems to be strongly extinguished
(2) Good match with several Type Ia at ~50d after maximum light.
(3) Good match with Type IIP SN 2004et at ~1 month after maximum.
