DRAFT
2023-12-09 09:02:04
Type: Object/s-Discovery/Classification
Bibcode: 2023TNSAN.332....1P
AT 2023zcu (ATLAS23wvm, ZTF23absdcgi): a fast and bright supernova candidate in the galaxy NGC 2139
Authors: I. Pérez-Fournon, F. Poidevin (IAC and ULL), H. Akoudad-Ekajouan, C. Araujo-Álvarez, C. Arrizabalaga-Díaz-Caneja, F. Barnes-Sánchez, P. Eguiguren-Arrizabalaga, A. Iglesias-López, G.A. Jaimes-Illanes, P. Jiménez-Sánchez, S. Lamolda-Mir, A. Mang-Román, G. Marrero-Ramallo, P.P. Meni-Gallardo, I. Ruiz-Cejudo (ULL), M. Sánchez-Andújar (ULL and IAC), V. Wienzek (ULL), E. Esparza-Borges, and F. Tinaut-Ruano (IAC and ULL).
Source Group: ULL-ASTRO-MASTER
Keywords: Transient, Time-domain, Supernova, Optical
Abstract:
We report the discovery of a fast and bright supernova candidate (AT 2023zcu, ATLAS23wvm, ZTF23absdcgi) in the galaxy NGC 2139 using public ATLAS and ZTF data.

Tonry et al. (TNS Astronomical Transient Report No. 195382) and Smith et al. (AstroNote 2023-331) have reported the ATLAS detection of the transient AT 2023zcu (ATLAS23wvm), a likely supernova in the galaxy NGC 2139 (27 Mpc, redshift independent from NED), on 2023-12-08 04:16:52 UT at orange-ATLAS = 19.054 +/- 0.082.

Here, we report the ZTF detection of AT 2023zcu (ZTF23absdcgi) on 2023-12-09 07:32:32 UT at r = 16.042 ± 0.024. The rapid evolution of about 3 magnitudes in 1.1 days suggests that AT 2023zcu is a young SN II.

Spectroscopic and photometric follow up is encouraged.


The ZTF light curve available at the LSST-ZTF brokers, e.g. Lasair

Location of AT 2023zcu on the DESI Legacy Imaging Survey

Based on the ZTF public alerts processed by the Lasair broker.

 

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 2023zcu 06:01:06.840 -23:40:29.24 06:01:06.829 -23:40:29.25 SN II 0.006
AstroNote Publication Timestamp Title Authors
2023-331 2023-12-08 17:34:57 ATLAS23wvm (AT2023zcu): discovery of a candidate SN in NGC 2139 (27 Mpc) K. W. Smith, D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, P. Ramsden (QUB), A. Aamer (QUB/Birmingham), L. Shingles (GSI/QUB), S. J. Smartt (Oxford/QUB), S. Srivastav, S. Ramaiya, J. Gillanders, L. Rhodes, A. Andersson, H. Stevance (Oxford), L. Denneau, J. Tonry, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. Sommer (LMU/QUB)

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