DRAFT
2023-08-17 15:46:35
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.231....1O
GOTO-FAST spectroscopic classifications of optical transients
Authors: D. O'Neill, B. Warwick, B. Godson, M. Pursiainen, A. Kumar, J. Lyman, H. Kuncarayakti, T. Killestein, D. Coppejans, G. Ramsay, R. Kotak, K. Ackley, M. J. Dyer, K. Ulaczyk, F. Jiminez-Ibarra, D. Steeghs, D. K. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. P. Breton, L. K. Nuttall, E. Pall'e, D. Pollacco on behalf of GOTO
Source Group: GOTO
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of 2 Type Ia's, 1 Type II and 1 Type IIn SNe.

GOTO-FAST (AstroNote 2023-224) reports the classifications of the following optical transients. The observations were obtained on the Isaac Newton Telescope (INT) on the night of 2023 Aug 16 using the IDS spectrograph with R150V grating (3950-7900 Å, R ~600). The transients were classified using SNID (Blondin & Tonry 2007).

Targets were supplied by  the Gravitational-wave Optical Transient Observer GOTO (Steeghs et al. 2022) , ATLAS survey (Smith et al. 2020), the Zwicky Transient Facility ZTF (Bellm et al. 2019) - data stream processed through the Fink broker (Möller et al. 2020)

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

 
Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2023meo [ZTF23aapsuva] 21:40:59.119 +24:00:26.36 SN IIn 0.097 Slow rising (~45d) Type IIn SN at about peak. Redshift based on narrow balmer lines present in the spectrum. 21:40:59.116 +24:00:26.29 SN IIn 0.095
TNS 2023ozl [ATLAS23qpp] 22:44:12.575 +10:36:58.66 SN Ia 0.056 Type Ia SN close to peak brightness. SNID template fitting provides redshift of about 0.060. 22:44:12.562 +10:36:58.78 SN Ia 0.06
TNS 2023pjx [ATLAS23rce] 01:31:25.581 +12:24:31.17 0.07 Type Ia SN close to peak brightness. SNID template fitting provides redshift of about 0.07.. 01:31:25.590 +12:24:31.21 SN Ia 0.07
TNS 2023pnt [GOTO23aaz] 00:01:57.553 +09:53:19.60 SN IIP 0.033603 0.033603 Matches to a normal SN II at redshift of the host. Halpha velocity of ~ 6500km/s suggests it is 40-50d from explosion. Redshift of host from ALFALFA Survey 00:01:57.485 +09:53:19.55 SN IIP 0.033603

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