DRAFT
2022-01-31 14:39:31
Type: Object/s-Discovery/Classification
Bibcode: 2022TNSAN..25....1O
ePESSTO+ spectroscopic classification of optical transients
Authors: D. O’Neill (Warwick), E. Ridley (Birmingham), X. Sheng (Birmingham), M. Nicholl (Birmingham), T. Killestein (Warwick), L. Galbany (Granada), A. Reguitti (UNAB), T. Kravtsov, C. Gutiérrez (Turku), S. Benetti (INAF-OAPd), J. Anderson (ESO), T.-W. Chen (Stockholm), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), O. Yaron, E. Zimmerman (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, O. McBrien, S. Srivastav (QUB)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 5 SNe Ia (including 2 Ia-91T) and 1 SN Ic. 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).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2022 January 30, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID (Blondin & Tonry 2007 2007ApJ...666.1024B) and GELATO (Harutyunyan et al. 2008 2008A&A...488..383H).

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 2022ahb [ATLAS22cnv] 05:58:16.203 -39:31:34.95 SN Ia 0.05 ATLAS At max Redshift from template matching 05:58:16.200 -39:31:34.75 SN Ia 0.05
TNS 2022anj [ATLAS22cxr] 11:30:53.505 -16:44:51.40 SN Ia-91T-like 0.069 ATLAS At max Redshift from host emission lines 11:30:53.480 -16:44:51.32 SN Ia-91T-like 0.069
TNS 2022ans [ATLAS22daa] 11:30:16.885 -11:35:34.70 SN Ia-91T-like 0.0781 0.0781 ATLAS -7 to -4 We confirm a previous classification from the ZTF group. Host redshift from NED. 11:30:16.885 -11:35:34.70 SN Ia-91T-like 0.0781
TNS 2022aqu [ATLAS22dit] 13:51:13.975 +02:26:48.81 SN Ia 0.077 ATLAS At max Reddened: E(B-V) ~0.5. Redshift from host emission lines 13:51:13.976 +02:26:48.71 SN Ia 0.077
TNS 2022ari [ATLAS22dmh] 14:01:28.762 -10:40:41.15 SN Ic 0.038 0.038 ATLAS -7 to -4 Host redshift from NED 14:01:28.785 -10:40:41.27 SN Ic 0.038
TNS 2022mq [ATLAS22blg] 12:14:32.920 -03:37:59.77 SN Ia 0.076 ATLAS +4 to +7 Also gives good SNID matches with SN Ia-91T. Redshift from host emission lines. 12:14:32.920 -03:37:59.77 SN Ia 0.076

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