ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population

G. Dimitriadis; U. Burgaz; M. Deckers; K. Maguire; J. Johansson; M. Smith; M. Rigault; C. Frohmaier; J. Sollerman; L. Galbany; Y.-L. Kim; C. Liu; A. A. Miller; P. E. Nugent; A. Alburai; P. Chen; S. Dhawan; M. Ginolin; A. Goobar; S. L. Groom; L. Harvey; W. D. Kenworthy; S. R. Kulkarni; K. Phan; B. Popovic; R. L. Riddle; B. Rusholme; T. E. Müller-Bravo; J. Nordin; J. H. Terwel; A. Townsend

doi:10.1051/0004-6361/202451852

ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population

G. Dimitriadis, U. Burgaz, M. Deckers, K. Maguire, J. Johansson, M. Smith, M. Rigault, C. Frohmaier, J. Sollerman, L. Galbany, Y.-L. Kim, C. Liu, A. A. Miller, P. E. Nugent, A. Alburai, P. Chen, S. Dhawan, M. Ginolin, A. Goobar, S. L. GroomL. Harvey, W. D. Kenworthy, S. R. Kulkarni, K. Phan, B. Popovic, R. L. Riddle, B. Rusholme, T. E. Müller-Bravo, J. Nordin, J. H. Terwel, A. Townsend

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	A10
Number of pages	19
Journal	Astronomy and Astrophysics
Volume	694
DOIs	https://doi.org/10.1051/0004-6361/202451852
Publication status	Published - 14 Feb 2025

Keywords

supernovae: general
UKRI
STFC
ST/V000713/1

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10.1051/0004-6361/202451852

ZTF SN Ia DR2Final published version, 2.66 MBLicence: CC BY

https://arxiv.org/abs/2409.04200

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Dimitriadis, G., Burgaz, U., Deckers, M., Maguire, K., Johansson, J., Smith, M., Rigault, M., Frohmaier, C., Sollerman, J., Galbany, L., Kim, Y.-L., Liu, C., Miller, A. A., Nugent, P. E., Alburai, A., Chen, P., Dhawan, S., Ginolin, M., Goobar, A., ... Townsend, A. (2025). ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population. Astronomy and Astrophysics, 694, Article A10. https://doi.org/10.1051/0004-6361/202451852

@article{ce6e911b65e94adb9936dca19735335b,

title = "ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population",

abstract = "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 {\textquoteleft}peculiar{\textquoteright} 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.",

keywords = "supernovae: general, UKRI, STFC, ST/V000713/1",

author = "G. Dimitriadis and U. Burgaz and M. Deckers and K. Maguire and J. Johansson and M. Smith and M. Rigault and C. Frohmaier and J. Sollerman and L. Galbany and Y.-L. Kim and C. Liu and Miller, \{A. A.\} and Nugent, \{P. E.\} and A. Alburai and P. Chen and S. Dhawan and M. Ginolin and A. Goobar and Groom, \{S. L.\} and L. Harvey and Kenworthy, \{W. D.\} and Kulkarni, \{S. R.\} and K. Phan and B. Popovic and Riddle, \{R. L.\} and B. Rusholme and M{\"u}ller-Bravo, \{T. E.\} and J. Nordin and Terwel, \{J. H.\} and A. Townsend",

year = "2025",

month = feb,

day = "14",

doi = "10.1051/0004-6361/202451852",

language = "English",

volume = "694",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

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Dimitriadis, G, Burgaz, U, Deckers, M, Maguire, K, Johansson, J, Smith, M, Rigault, M, Frohmaier, C, Sollerman, J, Galbany, L, Kim, Y-L, Liu, C, Miller, AA, Nugent, PE, Alburai, A, Chen, P, Dhawan, S, Ginolin, M, Goobar, A, Groom, SL, Harvey, L, Kenworthy, WD, Kulkarni, SR, Phan, K, Popovic, B, Riddle, RL, Rusholme, B, Müller-Bravo, TE, Nordin, J, Terwel, JH & Townsend, A 2025, 'ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population', Astronomy and Astrophysics, vol. 694, A10. https://doi.org/10.1051/0004-6361/202451852

TY - JOUR

T1 - ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population

AU - Dimitriadis, G.

AU - Burgaz, U.

AU - Deckers, M.

AU - Maguire, K.

AU - Johansson, J.

AU - Smith, M.

AU - Rigault, M.

AU - Frohmaier, C.

AU - Sollerman, J.

AU - Galbany, L.

AU - Kim, Y.-L.

AU - Liu, C.

AU - Miller, A. A.

AU - Nugent, P. E.

AU - Alburai, A.

AU - Chen, P.

AU - Dhawan, S.

AU - Ginolin, M.

AU - Goobar, A.

AU - Groom, S. L.

AU - Harvey, L.

AU - Kenworthy, W. D.

AU - Kulkarni, S. R.

AU - Phan, K.

AU - Popovic, B.

AU - Riddle, R. L.

AU - Rusholme, B.

AU - Müller-Bravo, T. E.

AU - Nordin, J.

AU - Terwel, J. H.

AU - Townsend, A.

PY - 2025/2/14

Y1 - 2025/2/14

N2 - 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.

AB - 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.

KW - supernovae: general

KW - UKRI

KW - STFC

KW - ST/V000713/1

UR - https://doi.org/10.1051/0004-6361/202451852

U2 - 10.1051/0004-6361/202451852

DO - 10.1051/0004-6361/202451852

M3 - Article

SN - 0004-6361

VL - 694

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A10

ER -

ZTF SN Ia DR2: The diversity and relative rates of the thermonuclear supernova population

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Keywords

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