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ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments

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ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments. / Aubert, M.; Rosnet, P.; Popovic, B. et al.
In: Astronomy and Astrophysics, Vol. 694, A7, 28.02.2025.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Aubert, M, Rosnet, P, Popovic, B, Ruppin, F, Smith, M, Rigault, M, Dimitriadis, G, Goobar, A, Johansson, J, Barjou-Delayre, C, Burgaz, U, Carreres, B, Feinstein, F, Fouchez, D, Galbany, L, Ginolin, M, Jaeger, TD, Kasliwal, MM, Kim, Y-L, Lacroix, L, Masci, FJ, Müller-Bravo, TE, Racine, B, Ravoux, C, Regnault, N, Riddle, RL, Rosselli, D, Rusholme, B, Smith, R, Sollerman, J, Terwel, JH & Townsend, A 2025, 'ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments', Astronomy and Astrophysics, vol. 694, A7. https://doi.org/10.1051/0004-6361/202450951

APA

Aubert, M., Rosnet, P., Popovic, B., Ruppin, F., Smith, M., Rigault, M., Dimitriadis, G., Goobar, A., Johansson, J., Barjou-Delayre, C., Burgaz, U., Carreres, B., Feinstein, F., Fouchez, D., Galbany, L., Ginolin, M., Jaeger, T. D., Kasliwal, M. M., Kim, Y.-L., ... Townsend, A. (2025). ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments. Astronomy and Astrophysics, 694, Article A7. https://doi.org/10.1051/0004-6361/202450951

Vancouver

Aubert M, Rosnet P, Popovic B, Ruppin F, Smith M, Rigault M et al. ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments. Astronomy and Astrophysics. 2025 Feb 28;694:A7. Epub 2025 Feb 14. doi: 10.1051/0004-6361/202450951

Author

Aubert, M. ; Rosnet, P. ; Popovic, B. et al. / ZTF SN Ia DR2 : Exploring SN Ia properties in the vicinity of under-dense environments. In: Astronomy and Astrophysics. 2025 ; Vol. 694.

Bibtex

@article{795956adcfe64a528ea7ae4dd5058af8,
title = "ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments",
abstract = "Context. The unprecedented statistics of detected Type Ia supernovae (SNe Ia) brought by the Zwicky Transient Facility (ZTF) enable us to probe the impact of the large-scale structure (LSS) on the properties of these objects.Aims. The goal of this paper is to explore the possible impact of the under-dense part of the LSS on the intrinsic SALT2 light-curve properties of SNe Ia and uncover possible biases in SN Ia analyses.Methods. With a volume-limited selection of ZTF-Cosmo-DR2 SNe Ia overlapping with the SDSS-DR7 survey footprint, we investigated the distribution of their properties with regard to voids detected in the SDSS-DR7 galaxy sample. We further used Voronoi volumes as a proxy for local density environments within the LSS.Results. We find a moderate dependency of the stretch on the localisation around the void centre and none when considering colour. The local Voronoi volumes mostly affect the fraction of low- and high-stretch supernovae.Conclusions. With the presently available statistics, we consider that the impact of high- or low-local-density environment can be considered as a proxy for the colour of the host galaxy. Under-dense environments should not cause any biases in analyses of supernova.",
author = "M. Aubert and P. Rosnet and B. Popovic and F. Ruppin and M. Smith and M. Rigault and G. Dimitriadis and A. Goobar and J. Johansson and C. Barjou-Delayre and U. Burgaz and B. Carreres and F. Feinstein and D. Fouchez and L. Galbany and M. Ginolin and T.D. Jaeger and M.M. Kasliwal and Y.-L. Kim and L. Lacroix and F.J. Masci and T.E. M{\"u}ller-Bravo and B. Racine and C. Ravoux and N. Regnault and R.L. Riddle and D. Rosselli and B. Rusholme and R. Smith and J. Sollerman and J.H. Terwel and A. Townsend",
year = "2025",
month = feb,
day = "28",
doi = "10.1051/0004-6361/202450951",
language = "English",
volume = "694",
journal = "Astronomy and Astrophysics",
issn = "1432-0746",
publisher = "EDP Sciences",

}

RIS

TY - JOUR

T1 - ZTF SN Ia DR2

T2 - Exploring SN Ia properties in the vicinity of under-dense environments

AU - Aubert, M.

AU - Rosnet, P.

AU - Popovic, B.

AU - Ruppin, F.

AU - Smith, M.

AU - Rigault, M.

AU - Dimitriadis, G.

AU - Goobar, A.

AU - Johansson, J.

AU - Barjou-Delayre, C.

AU - Burgaz, U.

AU - Carreres, B.

AU - Feinstein, F.

AU - Fouchez, D.

AU - Galbany, L.

AU - Ginolin, M.

AU - Jaeger, T.D.

AU - Kasliwal, M.M.

AU - Kim, Y.-L.

AU - Lacroix, L.

AU - Masci, F.J.

AU - Müller-Bravo, T.E.

AU - Racine, B.

AU - Ravoux, C.

AU - Regnault, N.

AU - Riddle, R.L.

AU - Rosselli, D.

AU - Rusholme, B.

AU - Smith, R.

AU - Sollerman, J.

AU - Terwel, J.H.

AU - Townsend, A.

PY - 2025/2/28

Y1 - 2025/2/28

N2 - Context. The unprecedented statistics of detected Type Ia supernovae (SNe Ia) brought by the Zwicky Transient Facility (ZTF) enable us to probe the impact of the large-scale structure (LSS) on the properties of these objects.Aims. The goal of this paper is to explore the possible impact of the under-dense part of the LSS on the intrinsic SALT2 light-curve properties of SNe Ia and uncover possible biases in SN Ia analyses.Methods. With a volume-limited selection of ZTF-Cosmo-DR2 SNe Ia overlapping with the SDSS-DR7 survey footprint, we investigated the distribution of their properties with regard to voids detected in the SDSS-DR7 galaxy sample. We further used Voronoi volumes as a proxy for local density environments within the LSS.Results. We find a moderate dependency of the stretch on the localisation around the void centre and none when considering colour. The local Voronoi volumes mostly affect the fraction of low- and high-stretch supernovae.Conclusions. With the presently available statistics, we consider that the impact of high- or low-local-density environment can be considered as a proxy for the colour of the host galaxy. Under-dense environments should not cause any biases in analyses of supernova.

AB - Context. The unprecedented statistics of detected Type Ia supernovae (SNe Ia) brought by the Zwicky Transient Facility (ZTF) enable us to probe the impact of the large-scale structure (LSS) on the properties of these objects.Aims. The goal of this paper is to explore the possible impact of the under-dense part of the LSS on the intrinsic SALT2 light-curve properties of SNe Ia and uncover possible biases in SN Ia analyses.Methods. With a volume-limited selection of ZTF-Cosmo-DR2 SNe Ia overlapping with the SDSS-DR7 survey footprint, we investigated the distribution of their properties with regard to voids detected in the SDSS-DR7 galaxy sample. We further used Voronoi volumes as a proxy for local density environments within the LSS.Results. We find a moderate dependency of the stretch on the localisation around the void centre and none when considering colour. The local Voronoi volumes mostly affect the fraction of low- and high-stretch supernovae.Conclusions. With the presently available statistics, we consider that the impact of high- or low-local-density environment can be considered as a proxy for the colour of the host galaxy. Under-dense environments should not cause any biases in analyses of supernova.

U2 - 10.1051/0004-6361/202450951

DO - 10.1051/0004-6361/202450951

M3 - Journal article

VL - 694

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 1432-0746

M1 - A7

ER -