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Supernova siblings and their parent galaxies in the Zwicky Transient Facility Bright Transient Survey

Graham, ML, Fremling, C, Perley, DA, Biswas, R, Phillips, CA, Sollerman, J, Nugent, PE, Nance, S, Dhawan, S, Nordin, J, Goobar, A, Miller, A, Neill, JD, Hall, XJ, Hankins, MJ, Duev, DA, Kasliwal, MM, Rigault, M, Bellm, EC, Hale, D , Mroz, P and Kulkarni, SR (2022) Supernova siblings and their parent galaxies in the Zwicky Transient Facility Bright Transient Survey. Monthly Notices of the Royal Astronomical Society, 511 (1). pp. 241-254. ISSN 0035-8711

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Supernova (SN) siblings – two or more SNe in the same parent galaxy – are useful tools for exploring progenitor stellar populations as well as properties of the host galaxies such as distance, star-formation rate, dust extinction, and metallicity. Since the average SN rate for a Milky Way-type galaxy is just one per century, a large imaging survey is required to discover an appreciable sample of SN siblings. From the wide-field Zwicky Transient Facility (ZTF) Bright Transient Survey (which aims for spectroscopic completeness for all transients which peak brighter than r < 18.5 mag) we present 10 SN siblings in five parent galaxies. For each of these families, we analyse the SN’s location within the host and its underlying stellar population, finding agreement with expectations that SNe from more massive progenitors are found nearer to their host core and in regions of more active star formation. We also present an analysis of the relative rates of core collapse and thermonuclear SN siblings, finding a significantly lower ratio than past SN sibling samples due to the unbiased nature of the ZTF.

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2022 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Uncontrolled Keywords: Astronomy & Astrophysics; DATA RELEASE; ENVIRONMENT; HUBBLE DIAGRAM; IA SUPERNOVAE; Physical Sciences; PROGENITOR; REMOTE OUTSKIRTS; RICH GAP TRANSIENTS; Science & Technology; SEYFERT-GALAXIES; SN 2019EHK; STAR-FORMATION; transients: supernovae; Science & Technology; Physical Sciences; Astronomy & Astrophysics; transients: supernovae; RICH GAP TRANSIENTS; IA SUPERNOVAE; DATA RELEASE; REMOTE OUTSKIRTS; SEYFERT-GALAXIES; HUBBLE DIAGRAM; STAR-FORMATION; SN 2019EHK; ENVIRONMENT; PROGENITOR; Astronomy & Astrophysics; 0201 Astronomical and Space Sciences
Subjects: Q Science > QB Astronomy
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
SWORD Depositor: A Symplectic
Date Deposited: 08 Nov 2022 13:37
Last Modified: 08 Nov 2022 13:45
DOI or ID number: 10.1093/mnras/stab3802
URI: https://researchonline.ljmu.ac.uk/id/eprint/18069
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