Help Privacy Policy Disclaimer
  Advanced SearchBrowse


  The effect of environment on Type Ia supernovae in the Dark Energy Survey three-year cosmological sample

Kelsey, L., Sullivan, M., Smith, M., Wiseman, P., Brout, D., Davis, T. M., et al. (2021). The effect of environment on Type Ia supernovae in the Dark Energy Survey three-year cosmological sample. Monthly Notices of the Royal Astronomical Society, 501(4), 4861-4876. doi:10.1093/mnras/staa3924.

Item is


show Files
hide Files
The effect of environment on Type Ia supernovae in the Dark Energy Survey three-year cosmological sample.pdf (Any fulltext), 5MB
File Permalink:
The effect of environment on Type Ia supernovae in the Dark Energy Survey three-year cosmological sample.pdf
MIME-Type / Checksum:
Technical Metadata:
Copyright Date:
Copyright Info:




Kelsey, L., Author
Sullivan, M., Author
Smith, M., Author
Wiseman, P., Author
Brout, D., Author
Davis, T. M., Author
Frohmaier, C., Author
Galbany, L., Author
Grayling, M., Author
Gutiérrez, C. P., Author
Hinton, S. R., Author
Kessler, R., Author
Lidman, C., Author
Möller, A., Author
Sako, M., Author
Scolnic, D., Author
Uddin, S. A., Author
Vincenzi, M., Author
Abbott, T. M. C., Author
Aguena, M., Author
Allam, S., AuthorAnnis, J., AuthorAvila, S., AuthorBacon, D., AuthorBertin, E., AuthorBrooks, D., AuthorBurke, D. L., AuthorRosell, A. Carnero, AuthorKind, M. Carrasco, AuthorCarretero, J., AuthorCastander, F. J., AuthorCostanzi, M., Authorda Costa, L. N., AuthorDesai, S., AuthorDiehl, H. T., AuthorDoel, P., AuthorEverett, S., AuthorFerrero, I., AuthorFerté, A., AuthorFlaugher, B., AuthorFosalba, P., AuthorGarcía-Bellido, J., AuthorGerdes, D. W., AuthorGruen, D., AuthorGruendl, R. A., AuthorGschwend, J., AuthorGutierrez, G., AuthorHollowood, D. L., AuthorHonscheid, K., AuthorJames, D. J., AuthorKim, A. G., AuthorKuehn, K., AuthorKuropatkin, N., AuthorLahav, O., AuthorLima, M., AuthorMarshall, J. L., AuthorMartini, P., AuthorMenanteau, F., AuthorMiquel, R., AuthorMorgan, R., AuthorOgando, R. L. C., AuthorPalmese, A., AuthorPaz-Chinchón, F., AuthorPlazas, A. A., AuthorRomer, A. K., AuthorSánchez, C., AuthorSanchez, E., AuthorSerrano, S., AuthorSevilla-Noarbe, I., AuthorSuchyta, E., AuthorTarle, G., AuthorThomas, D., AuthorTo, C., AuthorVarga, T. N.1, Author           Walker, A. R., AuthorWilkinson, R. D., Author more..
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              


Free keywords: -
 Abstract: Analyses of Type Ia supernovae (SNe Ia) have found puzzling correlations between their standardized luminosities and host galaxy properties: SNe Ia in high-mass, passive hosts appear brighter than those in lower mass, star-forming hosts. We examine the host galaxies of SNe Ia in the Dark Energy Survey 3-yr spectroscopically confirmed cosmological sample, obtaining photometry in a series of ‘local’ apertures centred on the SN, and for the global host galaxy. We study the differences in these host galaxy properties, such as stellar mass and rest-frame U − R colours, and their correlations with SN Ia parameters including Hubble residuals. We find all Hubble residual steps to be >3σ in significance, both for splitting at the traditional environmental property sample median and for the step of maximum significance. For stellar mass, we find a maximal local step of 0.098 ± 0.018 mag; ∼0.03 mag greater than the largest global stellar mass step in our sample (0.070 ± 0.017 mag). When splitting at the sample median, differences between local and global U − R steps are small, both ∼0.08 mag, but are more significant than the global stellar mass step (0.057 ± 0.017 mag). We split the data into sub-samples based on SN Ia light-curve parameters: stretch (x1) and colour (c), finding that redder objects (c > 0) have larger Hubble residual steps, for both stellar mass and U − R, for both local and global measurements, of ∼0.14 mag. Additionally, the bluer (star-forming) local environments host a more homogeneous SN Ia sample, with local U − R rms scatter as low as 0.084 ± 0.017 mag for blue (c < 0) SNe Ia in locally blue U − R environments.


 Dates: 2020-12-212021
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/staa3924
 Degree: -



Legal Case


Project information


Source 1

Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 501 (4) Sequence Number: - Start / End Page: 4861 - 4876 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150