AstroNote 2023-35

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DRAFT
2023-02-16 15:25:41
Type: Object/s-Discovery/Classification
ePESSTO+ spectroscopic classification of optical transients
Authors: R. Carini, F. Ragosta (INAF-OAR), L. Tartaglia (INAF), S. Benetti (INAF - OAPd), F. Onori (INAF-OAAb), A. Reguitti (UNAB & INAF-OAPd), N. Ihanec (Warsaw), T. Moore, S. Srivastav (QUB), J. Anderson (ESO), T.-W. Chen (TUM/MPA), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (ICE), M. Nicholl (Birmingham), O. Yaron, E. Zimmerman (Weizmann), S. Wyatt (Arizona), D. Sand (Arizona), R. Amaro (Arizona), J. Andrews (Arizona), M. Lundquist (Arizona), S. Valenti (UC Davis), S. Yang (SU), D. E. Reichart, J. B. Haislip, V. Kouprianov (UNC), J. Tonry, L. Denneau, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt (Oxford/QUB), K. W. Smith, D. R. Young, M. Fulton, M. McCollum, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI), C. Stubbs (Harvard)
Source Group: ePESSTO+
Abstract:
This report includes classifications of 2 Type Ia, 1 Ic supernovae and a gap transient.

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 (Smith et al. 2020 2020arXiv200309052S), the Distance Less Than 40 Mpc (DLT40; Tartaglia et al. 2018 2018ApJ...853...62T) surveys and by 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 2019 February 15, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were performed 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
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftSourcePhase (days)RemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2023bfb [ATLAS23bqr]13:56:09.956+05:02:12.29Gap0.00423NGC 53640.00423ATLASFlat continuum with a faint and narrow (FWHM~26 ang) Halpha in emission13:56:09.949+05:02:12.25Gap0.0042
TNS2023bqj [DLT23c]07:38:06.356-55:10:58.42SN Ic0.009ESO163-G0110.009DLT40, ATLAS-11Similar to SN 2007gr assuming a colour excess E(B-V)=0.3 mag07:38:06.310-55:10:58.73SN Ic0.009
TNS2023bsa [ATLAS23cde]10:59:41.834+09:31:44.31SN Ia0.0642MASX J10594203+09313610.064ATLAS-6Similar to SN 2005cf and 2009ig pre maximum10:59:41.828+09:31:44.46SN Ia0.064
TNS2023ber [ZTF23aabkubg]14:23:28.310+24:53:52.05SN Ia0.1SDSS J142328.09+245351.4ZTF1-8Similar to SN 2003du around maximum. Redshift derived from SNID.14:23:28.313+24:53:52.14SN Ia0.1

Comments

2023bfb was discovered by Mirco Villi in SNhunt using CRTS data.