DRAFT
2022-11-02 15:19:48
Type: Object/s-Discovery/Classification
Bibcode: 2022TNSAN.232....1S
ePESSTO+ spectroscopic classification of optical transients
Authors: X. Sheng, E. Ridley, A. Aamer, M. Nicholl, P. Ramsden (Birmingham), T. Pessi (UDP), A. Reguitti (INAF-OAPd), F. Onori (INAF-OAAb), I. Irani (Weizmann), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), O. Yaron (Weizmann), D. Young (QUB), J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, Univ. of Hawaii), B. Stalder (LSST), M. Fulton, J. Gillanders, T. Moore, S. Srivastav (QUB), D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello, C. R. Angus, Z. Ansari, N. Arendse, C. Gall, C. Grillo, S. H. Bruun, C. Hede, J. Hjorth, L. Izzo, H. Korhonen, S. Raimundo, D. Kodi Ramanah, A. Sarangi, R. Wojtak, H. Pfister (DARK, U Copenhagen), K. Auchettl (DARK, UC Santa Cruz, U Melbourne), K. C. Chambers, M. E. Huber, E. A. Magnier, T. J. L. de Boer, J. R. Fairlamb, C. C. Lin, R. J. Wainscoat, T. Lowe, H. Gao, J. Bulger, A. S. B. Schultz (IfA, Hawaii), A. Engel, A. Gagliano, G. Narayan, M. Soraisam (Illinois), Q. Wang (JHU), A. Rest (JHU, STScI), S. J. Smartt, K. W. Smith (Queen's University Belfast), K. Alexander, P. Blanchard, L. DeMarchi, A. Hajela, W. Jacobson-Galan, R. Margutti, D. Matthews, C. Stauffer, M. Stroh, G. Terreran (Northwestern), M. Drout (U Toronto), D. A. Coulter, G. Dimitriadis, R. J. Foley, T. Hung, C. D. Kilpatrick, C. Rojas-Bravo, M. R. Siebert (UC Santa Cruz), E. Ramirez-Ruiz (UC Santa Cruz, DARK)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 3 SNe Ia and 1 SN IIn. We also update the classification of SN2022yrs as a SN Ia-91T.

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 Young Supernova Experiment (Pan-STARRS - see Jones et al. 2021, 2021ApJ...908..143J), 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 Nov 1, 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
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Source Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2022ycn [ATLAS22bjha] 00:09:01.623 -11:17:41.26 SN Ia 0.11 ATLAS At max Redshift from SNID 00:09:01.623 -11:17:41.26 SN Ia 0.11
TNS 2022ymc [PS22kph] 03:13:40.610 -01:16:32.22 SN IIn 0.028 Pan-STARRS Pre-max Redshift from narrow emission lines 03:13:40.618 -01:16:32.17 SN IIn 0.028
TNS 2022you [ATLAS22bkae] 03:54:33.564 -45:45:42.07 SN Ia 0.06 ATLAS +4 to +7 Redshift from SNID 03:54:33.564 -45:45:42.07 SN Ia 0.06
TNS 2022yug [ATLAS22bkem] 03:03:07.626 -02:46:20.50 SN Ia 0.11 ATLAS At max Redshift from SNID 03:03:07.626 -02:46:20.50 SN Ia 0.11
TNS 2022yrs [ZTF22abqfekp] 03:44:34.563 -27:30:33.44 SN Ia-91T-like 0.063 ZTF -7 to -4 Redshift from SNID. This object was previously classified as a type Ia, higher resolution spectrum shows that this is a 91T subtype. 03:44:34.564 -27:30:33.49 SN Ia-91T-like 0.06

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