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TRACE spectroscopic classification of optical transients

ATel #10145; C. Inserra, M. Childress, M. Sullivan (Southampton), R. Kotak, K. Maguire, D. Young, K. W. Smith, S. J. Smartt (QUB), P. Mazzali (Liverpool JMU), J. Tonry, K. Chambers, B. Stalder, L. Denneau, A. Heinze, M. Huber, H. Weiland (IfA, Univ. of Hawaii), A. Rest (STScI)
on 6 Mar 2017; 16:39 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Cosimo Inserra (c.inserra@qub.ac.uk)

Subjects: Optical, Supernovae

TRACE, the Transient RApid Classification Experiment (PI: Inserra, ATel #10055), reports the following supernova classifications. The targets were supplied by ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680). All observations were performed on the Liverpool Telescope at Roque de Los Muchachos on 2017 March 05, using SPRAT and Red Grism (4000-8000A, 18A resolution). Classification was done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and GELATO (Harutyunyan et al., 2008, A&A, 488, 383). Classification spectra and additional details can be obtained from the IAU Transient Name Server.

 
Survey Name | IAU Name  | RA (J2000)  | Dec (J2000) | Disc. Date  | Source | Disc Mag |  Spec. Date  |    z    | Type |    Phase   | Notes 
 
ATLAS17biz  | SN2017byc | 15 10 01.42 | +07 46 43.9 | 20170304.66 | ATLAS  |   18.3   | 20170306.15  | 0.04627 |  Ia  | +11 to +20 | (1) 
ATLAS17bje  | SN2017byb | 08 23 58.67 | -06 53 54.2 | 20170304.40 | ATLAS  |   18.6   | 20170305.95  | 0.02175 |  Ia  |    > +20   | (2) 
 

(1) SNID gives best match with several normal Ia roughly two weeks after peak
(2) SNID gives best match with several normal Ia weeks after peak