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

L. Kelsey; M. Sullivan; P. Wiseman; P. Armstrong; R. Chen; D. Brout; T. M. Davis; M. Dixon; C. Frohmaier; L. Galbany; O. Graur; R. Kessler; C. Lidman; A. Möller; B. Popovic; B. Rose; D. Scolnic; M. Smith; M. Vincenzi; T. M. C. Abbott; M. Aguena; S. Allam; O. Alves; J. Annis; D. Bacon; E. Bertin; S. Bocquet; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; M. Costanzi; L. N. da Costa; M. E. S. Pereira; S. Desai; H. T. Diehl; S. Everett; I. Ferrero; J. Frieman; J. García-Bellido; D. Gruen; R. A. Gruendl; J. Gschwend; G. Gutierrez; S. R. Hinton; D. L. Hollowood; K. Honscheid; D. J. James; K. Kuehn; N. Kuropatkin; G. F. Lewis; J. Mena-Fernández; R. Miquel; A. Palmese; F. Paz-Chinchón; A. Pieres; A. A. Plazas Malagón; M. Raveri; M. Rodriguez-Monroy; A. K. Romer; E. Sanchez; V. Scarpine; M. Schubnell; I. Sevilla-Noarbe; E. Suchyta; M. E. C. Swanson; G. Tarle; D. L. Tucker; N. Weaverdyck; (DES Collaboration)

doi:10.1093/mnras/stac3711

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

L. Kelsey^*, M. Sullivan, P. Wiseman, P. Armstrong, R. Chen, D. Brout, T. M. Davis, M. Dixon, C. Frohmaier, L. Galbany, O. Graur, R. Kessler, C. Lidman, A. Möller, B. Popovic, B. Rose, D. Scolnic, M. Smith, M. Vincenzi, T. M. C. AbbottM. Aguena, S. Allam, O. Alves, J. Annis, D. Bacon, E. Bertin, S. Bocquet, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, M. E. S. Pereira, S. Desai, H. T. Diehl, S. Everett, I. Ferrero, J. Frieman, J. García-Bellido, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, G. F. Lewis, J. Mena-Fernández, R. Miquel, A. Palmese, F. Paz-Chinchón, A. Pieres, A. A. Plazas Malagón, M. Raveri, M. Rodriguez-Monroy, A. K. Romer, E. Sanchez, V. Scarpine, M. Schubnell, I. Sevilla-Noarbe, E. Suchyta, M. E. C. Swanson, G. Tarle, D. L. Tucker, N. Weaverdyck, (DES Collaboration)

^*Corresponding author for this work

Australian Astronomical Optics

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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 (M_stellar) 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 M_stellar, 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 M_stellar 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 M_stellar and local U − R, suggesting that U − R provides different information about the environment of SNe Ia compared to M_stellar, and motivating the inclusion of galaxy U − R colour in SN Ia distance bias correction.

Original language	English
Pages (from-to)	3046-3063
Number of pages	18
Journal	Monthly Notices of the Royal Astronomical Society
Volume	519
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stac3711
Publication status	Published - Feb 2023

Bibliographical note

Copyright the Author(s) 2022. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

surveys
supernovae: general
distance scale
cosmology: observations

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10.1093/mnras/stac3711Licence: CC BY

Publisher version (open access)Final published version, 17.6 MBLicence: CC BY

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Kelsey, L., Sullivan, M., Wiseman, P., Armstrong, P., Chen, R., Brout, D., Davis, T. M., Dixon, M., Frohmaier, C., Galbany, L., Graur, O., Kessler, R., Lidman, C., Möller, A., Popovic, B., Rose, B., Scolnic, D., Smith, M., Vincenzi, M., ... (DES 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

@article{da0d5d58609946adb68cb4fe8d60de68,

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 {\textquoteleft}mass-step{\textquoteright}, 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.",

keywords = "surveys, supernovae: general, distance scale, cosmology: observations",

author = "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 Rosell, {A. Carnero} and Kind, {M. Carrasco} 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 and N. Kuropatkin and Lewis, {G. F.} and J. Mena-Fern{\'a}ndez and R. Miquel and A. Palmese and F. Paz-Chinch{\'o}n and A. Pieres and {Plazas Malag{\'o}n}, {A. A.} and M. Raveri and M. Rodriguez-Monroy and Romer, {A. K.} and E. Sanchez and V. Scarpine and M. Schubnell and I. Sevilla-Noarbe and E. Suchyta and Swanson, {M. E. C.} and G. Tarle and Tucker, {D. L.} and N. Weaverdyck and {(DES Collaboration)}",

note = "Copyright the Author(s) 2022. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2023",

month = feb,

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 University Press",

number = "2",

}

Kelsey, L, Sullivan, M, Wiseman, P, Armstrong, P, Chen, R, Brout, D, Davis, TM, Dixon, M, Frohmaier, C, Galbany, L, Graur, O, Kessler, R, Lidman, C, Möller, A, Popovic, B, Rose, B, Scolnic, D, Smith, M, Vincenzi, M, Abbott, TMC, Aguena, M, Allam, S, Alves, O, Annis, J, Bacon, D, Bertin, E, Bocquet, S, Brooks, D, Burke, DL, Rosell, AC, Kind, MC, Carretero, J, Costanzi, M, da Costa, LN, Pereira, MES, Desai, S, Diehl, HT, Everett, S, Ferrero, I, Frieman, J, García-Bellido, J, Gruen, D, Gruendl, RA, Gschwend, J, Gutierrez, G, Hinton, SR, Hollowood, DL, Honscheid, K, James, DJ, Kuehn, K, Kuropatkin, N, Lewis, GF, Mena-Fernández, J, Miquel, R, Palmese, A, Paz-Chinchón, F, Pieres, A, Plazas Malagón, AA, Raveri, M, Rodriguez-Monroy, M, Romer, AK, Sanchez, E, Scarpine, V, Schubnell, M, Sevilla-Noarbe, I, Suchyta, E, Swanson, MEC, Tarle, G, Tucker, DL, Weaverdyck, N & (DES 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

TY - JOUR

T1 - Concerning colour

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

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 - Rosell, A. Carnero

AU - Kind, M. Carrasco

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.

AU - Kuropatkin, N.

AU - Lewis, G. F.

AU - Mena-Fernández, J.

AU - Miquel, R.

AU - Palmese, A.

AU - Paz-Chinchón, F.

AU - Pieres, A.

AU - Plazas Malagón, A. A.

AU - Raveri, M.

AU - Rodriguez-Monroy, M.

AU - Romer, A. K.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Schubnell, M.

AU - Sevilla-Noarbe, I.

AU - Suchyta, E.

AU - Swanson, M. E. C.

AU - Tarle, G.

AU - Tucker, D. L.

AU - Weaverdyck, N.

AU - (DES Collaboration)

N1 - Copyright the Author(s) 2022. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2023/2

Y1 - 2023/2

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.

KW - surveys

KW - supernovae: general

KW - distance scale

KW - cosmology: observations

UR - http://www.scopus.com/inward/record.url?scp=85148748765&partnerID=8YFLogxK

U2 - 10.1093/mnras/stac3711

DO - 10.1093/mnras/stac3711

M3 - Article

AN - SCOPUS:85148748765

SN - 0035-8711

VL - 519

SP - 3046

EP - 3063

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

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

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Keywords

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