DRAFT
2024-10-05 13:17:36
Type: Object/s-Discovery/Classification
Bibcode: 2024TNSAN.285....1T
adH0cc spectroscopic classification of SN 2024wrc
Authors: S. Taubenberger, C. Vogl, W. Hillebrandt (MPA Garching), G. Csoernyei, B. Leibundgut, J. Spyromilio (ESO)
Source Group: adH0cc
Keywords: Transient, Supernova, Spectroscopy, Optical
Abstract:
We have obtained an optical spectrum of SN 2024wrc, showing it to be a reddened Type Ia supernova a few days after maximum light. This is the third Type Ia supernova in the same galaxy within 7 years.

The adH0cc programme for an "accurate determination of H0 with core-collapse supernovae" reports the classification of the optical transient SN 2024wrc. The target was supplied by the Pan-STARRS Survey for Transients (Chambers et al. 2016, 2016arXiv161205560C), the Zwicky Transient Facility ZTF (Kulkarni 2018, 2018ATel11266....1K), and the Gravitational-wave Optical Transient Observer GOTO (see Dyer et al. 2020, SPIE, 11445 2020SPIE11445E..7GD). The observations were performed on the night of 2024 October 4 with the ESO Very Large Telescope UT1, equipped with the FORS2 spectrograph and grism 300V, covering a wavelength range from 3400 to 9600 Å at a resolution of 10 Å.

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Source Phase Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2024wrc [PS24jfm] 01:27:34.387 -12:26:45.27 SN Ia 0.0653 WISEA J012734.77-122640.5 0.0653 +5 days The classification spectrum shows typical features of a Type Ia supernova a few days after maximum light. Si II 6355 is very prominent and blueshifted by about 11400 km/s (adopting the known redshift of the host galaxy z = 0.0653). The relatively red continuum and a narrow Na D line at the redshift of the host suggest non-negligible reddening. GELATO (Harutyunyan et al. 2008, 2008A&A...488..383H) finds an excellent match with a spectrum of SN 2002er at +4.8d. SN 2024wrc is already the third Type Ia supernova in the same galaxy in recent years, after SN 2018hlp and SN 2023woq. This makes the system an interesting test case for SN Ia standardisation procedures and distance estimates. 01:27:34.387 -12:26:45.27 SN Ia 0.0653
AstroNote Publication Timestamp Title Authors
2019-103 2019-10-15 16:51:06 adH0cc spectroscopic classification of SN 2019rsw B. Leibundgut, J. Spyromilio (ESO), C. Vogl, A. Flörs, S. Taubenberger, W. Hillebrandt, S. Suyu (MPA Garching), S. J. Smartt, M. Dobson (QUB), R. Kotak (Turku), R. Bruch, A. Gal-Yam (Weizmann)
2023-290 2023-11-05 14:30:25 ePESSTO+ spectroscopic classification of optical transients P. Ramsden (QUB/Birmingham), A. Aamer, T. Moore (QUB), M. Fulton, K. W. Smith (QUB), S. Srivastav (Oxford/QUB), L. Galbany (IEEC/ICE-CSIC), T. Killestein, T. Nagao (Turku), S. Benetti (INAF-OAPd), J. Anderson (ESO), T. Müller Bravo (ICE), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), M. Nicholl, D. R. Young (QUB), E. Zimmerman, O. Yaron (Weizmann), S. Sim, J. Weston, X. Sheng (QUB), L. Shingles (GSI/QUB), S. J. Smartt (Oxford/QUB), H. Stevance, L. Rhodes, A. Andersson, J. Gillanders, S. Ramaiya (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), C. Stubbs (Harvard)
File Comments
tSN2024wrc_20241004_GRIS_300V_free_lSlit1_0arcsec_1_f.asci Quick-reduction spectrum (ascii format).
SN2024wrc_SN2002er.png GELATO comparison between SN 2024wrc and SN 2002er.

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