AstroNote 2022-211

Primary tabs

DRAFT
2022-10-14 12:44:08
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Deckers, L. Harvey , G. Dimitriadis, U. Burgaz, K. Maguire (TCD), T. Killestein (Warwick), L. Galbany (ICE), M. Fulton (QUB), S. Benetti (INAF OAPD), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (Birmingham), E. Zimmerman, 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, J. Gillanders, T. Moore, S. Srivastav (QUB)
Source Group: ePESSTO+
Abstract:
This report includes classifications of 1 Type Ia, 1 Type Ib/c, 1 young Type II/IIb. AT2022xir and ZTF22abgucbp were also observed and they were found to be consistent with a pure galaxy spectrum and an AGN, respectively.

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) and 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 October 13, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B), GELATO (Harutyunyan et al. 2008 2008A&A...488..383H), Superfit (Howell et al. 2005 2005ApJ...634.1190H) and NGSF (Next Generation SuperFit; AstroNote 2022-191, Howell et al. 2005 2005ApJ...634.1190H).

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
TNS2022xir [ZTF22abmleiq]21:59:03.330+11:52:47.62Galaxy0.15SDSS J215903.32+115247.40.148970121:59:03.330+11:52:47.62Galaxy0.15
TNS2022wdq [ZTF22abecedy]01:40:56.672-15:19:33.38SN Ib/c0.11Redshift derived from spectral matching. Light curve slowly rising for 50+ days.01:40:56.672-15:19:33.38SN Ib/c0.11
TNS2022xko [ATLAS22bijr]02:24:13.643-79:55:39.02SN II0.0149Redshift obtained from NED02:24:13.643-79:55:39.02SN II0.0149
TNS2022xkr [ATLAS22bikb]03:47:20.933-46:55:58.50SN Ia0.034–3 to +3Redshift obtained from NED03:47:20.910-46:55:58.66SN Ia0.034
OtherZTF22abgucbp03:49:50.770-07:22:25.40AGN0.38