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ePESSTO spectroscopic classification of optical transients

ATel #12598; C. Barbarino, L. Tartaglia, A. S. Carracedo (Stockholm Univ.), V. Brinnel (HU Berlin), J. Sollerman (Stockholm Univ.), R. Cartier (CTIO), J. Lyman (Warwick), T.-W. Chen (MPE), A. Pastorello, S. Benetti (INAF-OAPd), G. Leloudas (DTU), M. Nicholl (ROE, Edinburgh), M. Gromadzki (Univ. Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), K. Maguire, S. J. Smartt, D. R. Young, K. W. Smith, O. McBrien (QUB), O. Yaron, I. Manulis (Weizmann), J. Tonry, L. Denneau., A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), D. E. Wright (Univ. of Minnesota)
on 19 Mar 2019; 19:00 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Leonardo Tartaglia (leonardo.tartaglia@astro.su.se)

Subjects: Optical, Supernovae, Transient

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 classifications. Targets were supplied by the ATLAS survey, see Tonry et al. (2011, PASP, 123, 58) and Tonry et al. (ATel #8680) and 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/). All observations were performed on the ESO New Technology Telescope at La Silla on 2019-03-18, 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 and additional details can be obtained from http://www.pessto.org (via WISeREP) and the IAU Transient Name Server.

 
Survey Name   | IAU Name  | RA (J2000)  | Dec (J2000)  | Disc. Date | Source   | Disc Mag |  z      | Type      | Phase  | Notes 
ATLAS19dxp    | SN2019bsw | 10 05 06.12 | -16 24 21.13 |  20190313  |  ATLAS   |   19.20  | 0.027   |  II       | +70d   | (1,2) 
ATLAS19dyx    | SN2019but | 13 24 07.06 | +08 55 35.66 |  20190314  |  ATLAS   |   19.16  | 0.150   | Ic-BL     |  -3d   | (3) 
ATLAS19dzg    | SN2019bvu | 15 39 52.16 | -44 35 44.77 |  20190317  |  ATLAS   |   18.01  | 0.011   | Ia-norm   |  +3d   | (4)  
ATLAS19dzi    | SN2019bwb | 10 48 26.37 | -45 41 31.95 |  20190317  |  ATLAS   |   18.29  | 0.020   |  IIn      |   ?    | (5) 
ATLAS19dzj    | AT2019bwc | 12 43 57.88 | -45 35 45.12 |  20190317  |  ATLAS   |   17.82  |   ?     |   ?       |   ?    | (6) 
ZTF19aalbzoh  | SN2019bys | 17 51 09.71 | +21 26 37.90 |  20190315  |   ZTF    |   19.25  | 0.074   | Ia-norm   | +15d   |  
ZTF19aailptb  | SN2019bzq | 14 01 38.38 | +14 24 54.50 |  20190208  |   ZTF    |   19.82  | 0.285   |  IIn      |   ?    | (7) 
ZTF19aalzvnu  | SN2019bzo | 15 55 34.45 | +26 54 54.70 |  20190227  |   ZTF    |   20.83  | 0.065   |  IIb      |   ?    | (8,9) 
ZTF19aamuvak  | SN2019bzp | 14 34 24.18 | +09 58 47.60 |  20190315  |   ZTF    |   20.14  | 0.136   | Ia-norm   |  -2d   | (1) 

(1) Redshift is given by SNID.
(2) Very long and slow rising light curve. Unusually strong Ba II lines (6142A) like SN 1987A. Good match with SN 2004et.
(3) Good match with SN 2006aj.
(4) Red continuum, good match with SN 2003hv.
(5) Blue continuum with narrow features, good match with SNe 1996L and transitional Type IIn/Ibn transients like SNe 2005la and 2011hw.
(6) Very red featureless continuum. Probably a galaxy at z=0.02.
(7) Relatively red (~6500 K) continuum with very narrow Balmer features at z~0.285. Good match with SN 2010jl. M~-21 mag consistent with a luminous Type IIn.
(8) Noisy spectrum with He features.
(9) Redshift measured from the position of Halpha.