AstroNote 2022-183

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DRAFT
2022-08-26 18:31:29
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: C. Gutierrez, T. Kravtsov (UTU), T. Killestein (Warwick), T. Moore (QUB), L. Galbany (ICE), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (Birmingham), R. Bruch, O. Yaron (Weizmann), D. Young (QUB), J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), A. Rest (STScI), K. W. Smith, S. J. Smartt, M. Fulton, J. Gillanders, T. Moore, S. Srivastav (QUB)
Source Group: ePESSTO+
Abstract:
This report include classifications of one Ia, one Ia-91T-like, one type II SNe and one blue continuum.

ePESSTO+, the advanced Public ESO Spectroscopic Survey for Transient Objects (Smartt et al. 2015 2015A&A...579A..40S), reports the following supernova classifications.

Targets were supplied by the ATLAS survey (Smith et al. 2020 2020arXiv200309052S), the Zwicky Transient Facility ZTF (Bellm et al. 2019 2019PASP..131a8002B) - data stream processed through the Lasair broker (Smith, Williams, Young et al. 2019 2019RNAAS...3a..26S) and by the ALeRCE broker (Forster et al. 2020 https://arxiv.org/abs/2008.03303).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2022 August 26, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B).

The classification spectra and additional details can be obtained from http://www.pessto.org (via WISeREP) and the IAU Transient Name Server.

The classified objects are listed in the Related Objects table below.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2022sdb [ATLAS22bbsv]13:03:08.854-41:09:42.13SN Ia-91T-like0.01972MASS J13030965-41100810.0194ATLAS-7 to -4Has a host with known redshift, redshift of the transient is measured from the narrow lines of the observation.13:03:08.854-41:09:42.13SN Ia-91T-like0.0197
TNS2022rqq [ATLAS22banb]00:15:45.486-00:39:09.58SN Ia0.07ATLAS-7 to -4Redshift from spectral match.00:15:45.486-00:39:09.58SN Ia0.07
TNS2022ryp [ATLAS22bbtf]01:43:11.233-04:51:09.00SN II0.0389ATLAS-7 to -4Known host redshift from NED.01:43:11.244-04:51:08.94SN II0.0389
TNS2022rpm [ATLAS22batj]02:01:11.347-05:51:59.37SNATLASFeatureless blue continuum, no visible emission lines.02:01:11.360-05:51:59.51SN
TNS2022rsv [ZTF22abbqnqn]18:40:04.434+26:38:15.59ZTFObservation was attempted, but the results were just background noise.18:40:04.434+26:38:15.59