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ZTF SN Ia DR2: properties of the low-mass host galaxies of Type Ia supernovae in a volume-limited sample

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DOIResolve DOI: https://doi.org/10.1051/0004-6361/202452571
AuthorSearch for: ORCID identifier: https://orcid.org/0000-0003-0126-3999; Search for: ORCID identifier: https://orcid.org/0000-0002-9770-3508; Search for: ORCID identifier: https://orcid.org/0000-0001-9494-179X; Search for: ORCID identifier: https://orcid.org/0000-0002-3321-1432; Search for: ORCID identifier: https://orcid.org/0000-0003-1546-6615; Search for: ORCID identifier: https://orcid.org/0000-0002-1296-6887; Search for: ORCID identifier: https://orcid.org/0000-0002-8121-2560; Search for: ORCID identifier: https://orcid.org/0000-0002-4163-4996; Search for: ORCID identifier: https://orcid.org/0000-0001-5975-290X; Search for: ORCID identifier: https://orcid.org/0000-0002-1031-0796; Search for: ORCID identifier: https://orcid.org/0009-0007-2731-5562; Search for: 1ORCID identifier: https://orcid.org/0009-0006-7454-3579; Search for: ORCID identifier: https://orcid.org/0000-0001-8857-9843; Search for: ORCID identifier: https://orcid.org/0009-0004-5311-9301; Search for: ORCID identifier: https://orcid.org/0000-0003-3393-9383; Search for: ORCID identifier: https://orcid.org/0000-0003-3939-7167; Search for: ORCID identifier: https://orcid.org/0000-0001-8342-6274; Search for: ORCID identifier: https://orcid.org/0000-0001-6383-860X; Search for: ORCID identifier: https://orcid.org/0000-0002-6099-7565; Search for: ORCID identifier: https://orcid.org/0000-0002-3389-0586; Search for: ORCID identifier: https://orcid.org/0000-0001-9834-3439; Search for: ORCID identifier: https://orcid.org/0000-0002-3168-0139; Search for: ; Search for: ORCID identifier: https://orcid.org/0000-0002-5619-4938; Search for: ORCID identifier: https://orcid.org/0000-0003-2451-5482; Search for: ORCID identifier: https://orcid.org/0000-0002-0466-1119; Search for: ORCID identifier: https://orcid.org/0000-0003-1227-3738; Search for: ORCID identifier: https://orcid.org/0000-0001-7648-4142
Affiliation
  1. National Research Council of Canada. Herzberg Astronomy and Astrophysics
FunderSearch for: H2020 European Research Council; Search for: Irish Research Council
FormatText, Article
Subjectsupernovae: general
Abstract
In this study, we explore the characteristics of ‘low-mass’ (log(M⋆/M⊙) ≤ 8) and ‘intermediate-mass’ (8 < log(M⋆/M⊙) ≤ 10) host galaxies of Type Ia supernovae (SNe Ia) from the second data release (DR2) of the Zwicky Transient Facility survey. We investigated their correlations with different sub-types of SNe Ia. We used the photospheric velocities measured from the Si IIλ6355 feature, SALT2 light-curve stretch (x1), and host-galaxy properties of SNe Ia to re-investigate the existing relationship between host galaxy mass and Si IIλ6355 velocities. We also investigated sub-type preferences for host populations. We show that the more energetic and brighter 91T-like SNe Ia tend to reside among the younger host populations, while 91bg-like SNe Ia are found among the older populations. Our findings suggest that high-velocity SNe Ia (HV SNe Ia) do indeed come from older populations, but they can also come from young populations as well. Therefore, while our findings can partly provide support for HV SNe Ia in the context of single degenerate progenitor models, they indicate that HV SNe Ia (rather than comprising a different population) might be a continued distribution with different explosion mechanisms. Lastly, we investigate the specific rate of SNe Ia in the volume-limited SN Ia sample of DR2 and compare our results with other surveys.
Publication date
PublisherEDP Sciences
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  • Astronomy & Astrophysics 694, A13 (14 February 2025).
LanguageEnglish
Peer reviewedYes
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Record identifier6d871521-c913-4e29-80b8-e6eec8f3062c
Record created2025-05-22
Record modified2025-05-22
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