ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population
The Zwicky Transient Facility SN Ia Data Release 2 (ZTF SN Ia DR2) contains more than 3000 Type Ia supernovae (SNe Ia), providing the largest homogeneous low-redshift sample of SNe Ia. Having at least one spectrum per event, this data collection is ideal for large-scale statistical studies of the photometric, spectroscopic and host-galaxy properties of SNe Ia, particularly of the rarer ‘peculiar’ sub-classes. In this paper we first present the method we developed to spectroscopically classify the SNe in the sample, and the techniques we used to model their multi-band light curves and explore their photometric properties. We then show a method to distinguish between the peculiar sub-types and the normal SNe Ia. We also explore the properties of their host galaxies and estimate their relative rates, focusing on the peculiar sub-types and their connection to the cosmologically useful SNe Ia. Finally, we discuss the implications of our study with respect to the progenitor systems of the peculiar SN Ia events.
Authors
- Reed Riddle (ORCID: https://orcid.org/0000-0002-0387-370X)
- K. Maguire (ORCID: https://orcid.org/0000-0002-9770-3508)
- J. Terwel (ORCID: https://orcid.org/0000-0001-9834-3439)
- A. Alburai
- K. Luan Phan (ORCID: https://orcid.org/0009-0004-8693-6690)
- Alan R. Townsend (ORCID: https://orcid.org/0009-0005-4338-5996)
- M Ginolin (ORCID: https://orcid.org/0009-0004-5311-9301)
- S.R. Kulkarni
- Young-Lo Kim (ORCID: https://orcid.org/0000-0002-1031-0796)
- M. R. Smith (ORCID: https://orcid.org/0000-0002-3321-1432)
- T. E. Müller-Bravo (ORCID: https://orcid.org/0000-0003-3939-7167)
- G. Dimitriadis
- Suhail Dhawan (ORCID: https://orcid.org/0000-0002-2376-6979)
- Adam A. Miller (ORCID: https://orcid.org/0000-0001-9515-478X)
- W. D. Kenworthy (ORCID: https://orcid.org/0000-0002-5153-5983)
- M. Rigault (ORCID: https://orcid.org/0000-0002-8121-2560)
- A. Goobar
- L. Harvey (ORCID: https://orcid.org/0000-0003-3393-9383)
- S.L. Groom
- J. Sollerman
- Chao Liu (ORCID: https://orcid.org/0000-0002-1802-6917)
- L. Galbany
- J. Nordin
- J. Johansson (ORCID: https://orcid.org/0000-0001-5975-290X)
- C. Frohmaier (ORCID: https://orcid.org/0000-0001-9553-4723)
- B. Rusholme (ORCID: https://orcid.org/0000-0001-7648-4142)
- B Popovic (ORCID: https://orcid.org/0000-0002-8012-6978)
- U. Burgaz (ORCID: https://orcid.org/0000-0003-0126-3999)
- M. Deckers (ORCID: https://orcid.org/0000-0001-8857-9843)
- P.E. Nugent
- Pengxu Chen
Institutions
- Université Claude Bernard Lyon 1 (FR)
- Northwestern University (US)
- California Institute of Technology (US)
- Centre National de la Recherche Scientifique (FR)
- Institute of Space Sciences (ES)
- Lawrence Berkeley National Laboratory (US)
- Stockholm University (SE)
- Trinity College Dublin (IE)
- University of Cambridge (GB)
- Humboldt-Universität zu Berlin (DE)
- Institut d'Estudis Espacials de Catalunya (ES)
- Nordic Optical Telescope (ES)
- Institute of Nuclear Physics of Lyon (FR)
- University of Southampton (GB)
- Institut de Physique des 2 Infinis de Lyon (FR)
- Weizmann Institute of Science (IL)
- Lancaster University (GB)
- University of California, Berkeley (US)
Publication Details
- Journal
- Astronomy and Astrophysics
- Published
- 2024-12-24
- DOI
- https://doi.org/10.1051/0004-6361/202451852
- Citations
- 22
- Primary Topic
- Gamma-ray bursts and supernovae
- Type
- article
- Field-Weighted Citation Impact
- 7.29
Funders
- National Science Foundation
- Gordon and Betty Moore Foundation
- California Institute of Technology
- Northwestern University
- University of Washington
- Heising-Simons Foundation
- University of Warwick
- European Commission
- Trinity College Dublin
- Weizmann Institute of Science
- Irish Research Council
- Generalitat de Catalunya
- Knut och Alice Wallenbergs Stiftelse
- Vetenskapsrådet
- Ministerio de Ciencia e Innovación
- Stockholms Universitet
- Horizon 2020 Framework Programme
- Science and Technology Facilities Council
- Deutsches Elektronen-Synchrotron
- Agència de Gestió d'Ajuts Universitaris i de Recerca
- Agencia Estatal de Investigación
- Institut National de Physique Nucléaire et de Physique des Particules
- Lawrence Berkeley National Laboratory
- H2020 European Research Council
- HORIZON EUROPE European Research Council