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Concerning colour: The effect of environment on type Ia supernova colour in the dark energy survey

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Concerning colour: The effect of environment on type Ia supernova colour in the dark energy survey. / Dark Energy Survey Collaboration.
In: Monthly Notices of the Royal Astronomical Society, Vol. 519, No. 2, 01.02.2023, p. 3046-3063.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Dark Energy Survey Collaboration 2023, 'Concerning colour: The effect of environment on type Ia supernova colour in the dark energy survey', Monthly Notices of the Royal Astronomical Society, vol. 519, no. 2, pp. 3046-3063. https://doi.org/10.1093/mnras/stac3711

APA

Dark Energy Survey Collaboration (2023). Concerning colour: The effect of environment on type Ia supernova colour in the dark energy survey. Monthly Notices of the Royal Astronomical Society, 519(2), 3046-3063. https://doi.org/10.1093/mnras/stac3711

Vancouver

Dark Energy Survey Collaboration. Concerning colour: The effect of environment on type Ia supernova colour in the dark energy survey. Monthly Notices of the Royal Astronomical Society. 2023 Feb 1;519(2):3046-3063. Epub 2023 Jan 6. doi: 10.1093/mnras/stac3711

Author

Dark Energy Survey Collaboration. / Concerning colour : The effect of environment on type Ia supernova colour in the dark energy survey. In: Monthly Notices of the Royal Astronomical Society. 2023 ; Vol. 519, No. 2. pp. 3046-3063.

Bibtex

@article{163d1bbabc8746ee811ccdcf00e70ad4,
title = "Concerning colour: The effect of environment on type Ia supernova colour in the dark energy survey",
abstract = "Recent analyses have found intriguing correlations between the colour (c) of type Ia supernovae (SNe Ia) and the size of their 'mass-step', the relationship between SN Ia host galaxy stellar mass (Mstellar) and SN Ia Hubble residual, and suggest that the cause of this relationship is dust. Using 675 photometrically classified SNe Ia from the Dark Energy Survey 5-yr sample, we study the differences in Hubble residual for a variety of global host galaxy and local environmental properties for SN Ia subsamples split by their colour. We find a 3σ difference in the mass-step when comparing blue (c < 0) and red (c > 0) SNe. We observe the lowest r.m.s. scatter (~0.14 mag) in the Hubble residual for blue SNe in low mass/blue environments, suggesting that this is the most homogeneous sample for cosmological analyses. By fitting for c-dependent relationships between Hubble residuals and Mstellar, approximating existing dust models, we remove the mass-step from the data and find tentative ~2σ residual steps in rest-frame galaxy U - R colour. This indicates that dust modelling based on Mstellar may not fully explain the remaining dispersion in SN Ia luminosity. Instead, accounting for a c-dependent relationship between Hubble residuals and global U - R, results in ≤1σ residual steps in Mstellar and local U - R, suggesting that U - R provides different information about the environment of SNe Ia compared to Mstellar, and motivating the inclusion of galaxy U - R colour in SN Ia distance bias correction....",
author = "{Dark Energy Survey Collaboration} and L. Kelsey and M. Sullivan and P. Wiseman and P. Armstrong and R. Chen and D. Brout and Davis, {T. M.} and M. Dixon and C. Frohmaier and L. Galbany and O. Graur and R. Kessler and C. Lidman and A. M{\"o}ller and B. Popovic and B. Rose and D. Scolnic and M. Smith and M. Vincenzi and Abbott, {T. M. C.} and M. Aguena and S. Allam and O. Alves and J. Annis and D. Bacon and E. Bertin and S. Bocquet and D. Brooks and Burke, {D. L.} and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and M. Costanzi and {da Costa}, {L. N.} and Pereira, {M. E. S.} and S. Desai and Diehl, {H. T.} and S. Everett and I. Ferrero and J. Frieman and J. Garc{\'i}a-Bellido and D. Gruen and Gruendl, {R. A.} and J. Gschwend and G. Gutierrez and Hinton, {S. R.} and Hollowood, {D. L.} and K. Honscheid and James, {D. J.} and K. Kuehn",
year = "2023",
month = feb,
day = "1",
doi = "10.1093/mnras/stac3711",
language = "English",
volume = "519",
pages = "3046--3063",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "2",

}

RIS

TY - JOUR

T1 - Concerning colour

T2 - The effect of environment on type Ia supernova colour in the dark energy survey

AU - Dark Energy Survey Collaboration

AU - Kelsey, L.

AU - Sullivan, M.

AU - Wiseman, P.

AU - Armstrong, P.

AU - Chen, R.

AU - Brout, D.

AU - Davis, T. M.

AU - Dixon, M.

AU - Frohmaier, C.

AU - Galbany, L.

AU - Graur, O.

AU - Kessler, R.

AU - Lidman, C.

AU - Möller, A.

AU - Popovic, B.

AU - Rose, B.

AU - Scolnic, D.

AU - Smith, M.

AU - Vincenzi, M.

AU - Abbott, T. M. C.

AU - Aguena, M.

AU - Allam, S.

AU - Alves, O.

AU - Annis, J.

AU - Bacon, D.

AU - Bertin, E.

AU - Bocquet, S.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Costanzi, M.

AU - da Costa, L. N.

AU - Pereira, M. E. S.

AU - Desai, S.

AU - Diehl, H. T.

AU - Everett, S.

AU - Ferrero, I.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Hinton, S. R.

AU - Hollowood, D. L.

AU - Honscheid, K.

AU - James, D. J.

AU - Kuehn, K.

PY - 2023/2/1

Y1 - 2023/2/1

N2 - Recent analyses have found intriguing correlations between the colour (c) of type Ia supernovae (SNe Ia) and the size of their 'mass-step', the relationship between SN Ia host galaxy stellar mass (Mstellar) and SN Ia Hubble residual, and suggest that the cause of this relationship is dust. Using 675 photometrically classified SNe Ia from the Dark Energy Survey 5-yr sample, we study the differences in Hubble residual for a variety of global host galaxy and local environmental properties for SN Ia subsamples split by their colour. We find a 3σ difference in the mass-step when comparing blue (c < 0) and red (c > 0) SNe. We observe the lowest r.m.s. scatter (~0.14 mag) in the Hubble residual for blue SNe in low mass/blue environments, suggesting that this is the most homogeneous sample for cosmological analyses. By fitting for c-dependent relationships between Hubble residuals and Mstellar, approximating existing dust models, we remove the mass-step from the data and find tentative ~2σ residual steps in rest-frame galaxy U - R colour. This indicates that dust modelling based on Mstellar may not fully explain the remaining dispersion in SN Ia luminosity. Instead, accounting for a c-dependent relationship between Hubble residuals and global U - R, results in ≤1σ residual steps in Mstellar and local U - R, suggesting that U - R provides different information about the environment of SNe Ia compared to Mstellar, and motivating the inclusion of galaxy U - R colour in SN Ia distance bias correction....

AB - Recent analyses have found intriguing correlations between the colour (c) of type Ia supernovae (SNe Ia) and the size of their 'mass-step', the relationship between SN Ia host galaxy stellar mass (Mstellar) and SN Ia Hubble residual, and suggest that the cause of this relationship is dust. Using 675 photometrically classified SNe Ia from the Dark Energy Survey 5-yr sample, we study the differences in Hubble residual for a variety of global host galaxy and local environmental properties for SN Ia subsamples split by their colour. We find a 3σ difference in the mass-step when comparing blue (c < 0) and red (c > 0) SNe. We observe the lowest r.m.s. scatter (~0.14 mag) in the Hubble residual for blue SNe in low mass/blue environments, suggesting that this is the most homogeneous sample for cosmological analyses. By fitting for c-dependent relationships between Hubble residuals and Mstellar, approximating existing dust models, we remove the mass-step from the data and find tentative ~2σ residual steps in rest-frame galaxy U - R colour. This indicates that dust modelling based on Mstellar may not fully explain the remaining dispersion in SN Ia luminosity. Instead, accounting for a c-dependent relationship between Hubble residuals and global U - R, results in ≤1σ residual steps in Mstellar and local U - R, suggesting that U - R provides different information about the environment of SNe Ia compared to Mstellar, and motivating the inclusion of galaxy U - R colour in SN Ia distance bias correction....

U2 - 10.1093/mnras/stac3711

DO - 10.1093/mnras/stac3711

M3 - Journal article

VL - 519

SP - 3046

EP - 3063

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -