AstroNote 2022-258

Primary tabs

DRAFT
2022-12-03 16:42:57
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: M. Gromadzki, K. Grzesiak, N. Ihanec (Warsaw), T. Kravtsov (UTU), A. Gkini, P. Pessi, J. Sollerman, S. Yang (Stockholm), S. Benetti (INAF-OAPd), M. Fulton (QUB), R. Bruch (Weizmann), J. Anderson (ESO), T.-W. Chen (TUM/MPA), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (Birmingham), 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, D. Young (QUB)
Source Group: ePESSTO+
Abstract:
This report includes classifications of one Type Ia - peculiar, one Type II and a galactic CV. We encourage followup observations

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 December 02, 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
TNS2022aana [ZTF22abtprtn]22:34:34.803-27:29:11.78SN Ia-pec0.04redshift determined from the host galaxy lines present in the spectrum22:34:34.803-27:29:11.78SN Ia-pec0.04
TNS2022abzd [ATLAS22bnes]09:38:09.837-75:09:48.91CV0blue continum with strong balmer lines09:38:09.837-75:09:48.91CV
TNS2022acgi [ATLAS22bnjy]09:29:44.738+03:04:21.61SN Ia-CSM0.17redshift determined from the balmer lines present in the spectrum09:29:44.737+03:04:21.74SN Ia-CSM0.17