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ePESSTO spectroscopic classification of optical transients

ATel #12435; S. Piranomonte (INAF-OAR), R. Carini (INAF-OAR), A. Melandri (INAF-OAB), P. D'Avanzo (INAF-OAB), M. T. Botticella (INAF-Capodimonte), E. Brocato (INAF-OAAb, INAF-OAR), T.-W. Chen (MPE), A. Gal-Yam (Weizmann), J. Nordin (HU Berlin), S. Taubenberger (MPA-Garching), L. Galbany (Pitt), C. Inserra (Cardiff), E. Kankare (Turku), K. Maguire (QUB), S. J. Smartt (QUB), O. Yaron (Weizmann), D. R. Young (QUB), I. Manulis (Weizmann), J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), K. W. Smith, O. McBrien (QUB), D. E. Wright (Univ. of Minnesota)
on 27 Jan 2019; 21:41 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Paolo D'Avanzo (paolo.davanzo@brera.inaf.it)

Subjects: Optical, Supernovae

ePESSTO, the extended Public ESO Spectroscopic Survey for Transient Objects (see Smartt et al. 2015, A&A, 579, 40 http://www.pessto.org ), reports the following supernova classification.Targets were supplied by the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and by the Zwicky Transient Facility (https://www.ztf.caltech.edu/; Kulkarni et al. 2018, ATel 11266) data stream processed through the Lasair broker (http://lasair.roe.ac.uk/). Observations were performed on the ESO New Technology Telescope at La Silla on 2019 Jan 25, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). The classification was done with SNID (Blondin & Tonry, 2007, ApJ, 666, 1024) and GELATO (Harutyunyan et al., 2008, A&A, 488, 383). Classification spectrum and additional details can be obtained from http://www.pessto.org (via WISeREP) and the IAU Transient Name Server. Unless otherwise noted the redshift is from SN template matching.

  
Survey Name  | IAU Name   | RA (J2000)  |  Dec (J2000) | Disc. Date | Source  | Disc Mag |   z   |  Type  |   Phase   | Notes  
ATLAS19bub   | SN2019yy   | 02:10:18.81 | +06:30:42.3  |  20190123  |  ATLAS  |  18.8    | 0.088 |   Ia   |  at max   | (1) 
ZTF19aadyijk | SN2019aev  | 12:56:18.11 | +18:47:06.9  |  20190123  |   ZTF   |  18.7    | 0.065 |   Ia   |  at max   | (2) 
ATLAS19bos   | SN2019uq   | 12:18:49.83	| -11:33:03.0  |  20190117  |  ATLAS  |  19.1    |  0.1  |   Ic   |  at max   | (3) 
ATLAS19bsd   | SN2019xg   | 14:09:16.25	| +17:01:22.9  |  20190120  |  ATLAS  |  18.8    |  0.1  |   Ia   |  at max   | (4) 
ZTF19aaejslw | SN2019afa  | 14:57:27.81	| +08:47:09.3  |  20190124  |   ZTF   |  19.4    | 0.078 |   Ia   |  at max   | (5) 

(1) Consistent with Type 91T-like. Redshift from host galaxy lines.
(2) Redshift from host galaxy IC 3907.
(3) ATLAS19bos was observed as part of the GREAT survey (Chen et al. 2018, ApJ, 867L, 31), having a black body temperature of T_BB ~ 9700+/-400K, obtained from photometry taken on January 22, 2019, 05:11:40 UTC, griz=19.44, 19.47, 19.49, 19.63 mag, consistent with ATLAS early lightcurve.
(4) ATLAS19bsd was observed as part of the GREAT survey (Chen et al. 2018, ApJ, 867L, 31), having a black body temperature of T_BB ~ 17700 +/- 5700 K, obtained from photometry taken on January 23, 2019, 08:09:01 UTC, with griz=18.58, 18.74, 19.31, 19.75 mag.
(5) Spectroscopic redshift from SDSS. Consistent with Type 91bg-like.