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Using host galaxy spectroscopy to explore systematics in the standardization of Type Ia supernovae

Publication ,  Journal Article
Dixon, M; Lidman, C; Mould, J; Kelsey, L; Brout, D; Möller, A; Wiseman, P; Sullivan, M; Galbany, L; Davis, TM; Vincenzi, M; Scolnic, D; To, C ...
Published in: Monthly Notices of the Royal Astronomical Society
December 1, 2022

We use stacked spectra of the host galaxies of photometrically identified Type Ia supernovae (SNe Ia) from the Dark Energy Survey (DES) to search for correlations between Hubble diagram residuals and the spectral properties of the host galaxies. Utilizing full spectrum fitting techniques on stacked spectra binned by Hubble residual, we find no evidence for trends between Hubble residuals and properties of the host galaxies that rely on spectral absorption features (<1.3σ), such as stellar population age, metallicity, and mass-to-light ratio. However, we find significant trends between the Hubble residuals and the strengths of [O ii] (4.4σ) and the Balmer emission lines (3σ). These trends are weaker than the well-known trend between Hubble residuals and host galaxy stellar mass (7.2σ) that is derived from broad-band photometry. After light-curve corrections, we see fainter SNe Ia residing in galaxies with larger line strengths. We also find a trend (3σ) between Hubble residual and the Balmer decrement (a measure of reddening by dust) using H β and H γ. The trend, quantified by correlation coefficients, is slightly more significant in the redder SNe Ia, suggesting that the bluer SNe Ia are relatively unaffected by dust in the interstellar medium of the host and that dust contributes to current Hubble diagram scatter impacting the measurement of cosmological parameters.

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Published In

Monthly Notices of the Royal Astronomical Society

DOI

EISSN

1365-2966

ISSN

0035-8711

Publication Date

December 1, 2022

Volume

517

Issue

3

Start / End Page

4291 / 4304

Related Subject Headings

  • Astronomy & Astrophysics
  • 5109 Space sciences
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0201 Astronomical and Space Sciences
 

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Dixon, M., Lidman, C., Mould, J., Kelsey, L., Brout, D., Möller, A., … Varga, T. N. (2022). Using host galaxy spectroscopy to explore systematics in the standardization of Type Ia supernovae. Monthly Notices of the Royal Astronomical Society, 517(3), 4291–4304. https://doi.org/10.1093/mnras/stac2994
Dixon, M., C. Lidman, J. Mould, L. Kelsey, D. Brout, A. Möller, P. Wiseman, et al. “Using host galaxy spectroscopy to explore systematics in the standardization of Type Ia supernovae.” Monthly Notices of the Royal Astronomical Society 517, no. 3 (December 1, 2022): 4291–4304. https://doi.org/10.1093/mnras/stac2994.
Dixon M, Lidman C, Mould J, Kelsey L, Brout D, Möller A, et al. Using host galaxy spectroscopy to explore systematics in the standardization of Type Ia supernovae. Monthly Notices of the Royal Astronomical Society. 2022 Dec 1;517(3):4291–304.
Dixon, M., et al. “Using host galaxy spectroscopy to explore systematics in the standardization of Type Ia supernovae.” Monthly Notices of the Royal Astronomical Society, vol. 517, no. 3, Dec. 2022, pp. 4291–304. Scopus, doi:10.1093/mnras/stac2994.
Dixon M, Lidman C, Mould J, Kelsey L, Brout D, Möller A, Wiseman P, Sullivan M, Galbany L, Davis TM, Vincenzi M, Scolnic D, Lewis GF, Smith M, Kessler R, Duffy A, Taylor EN, Flynn C, Abbott TMC, Aguena M, Allam S, Andrade-Oliveira F, Annis J, Asorey J, Bertin E, Bocquet S, Brooks D, Burke DL, Carnero Rosell A, Carollo D, Carrasco Kind M, Carretero J, Costanzi M, Da Costa LN, Pereira MES, Doel P, Everett S, Ferrero I, Flaugher B, Friedel D, Frieman J, Garcia-Bellido J, Gatti M, Gerdes DW, Glazebrook K, Gruen D, Gschwend J, Gutierrez G, Hinton SR, Hollowood DL, Honscheid K, Huterer D, James DJ, Kuehn K, Kuropatkin N, Malik U, March M, Menanteau F, Miquel R, Morgan R, Nichol B, Ogando RLC, Palmese A, Paz-Chinchón F, Pieres A, Plazas Malagón AA, Rodriguez-Monroy M, Romer AK, Sanchez E, Scarpine V, Sevilla-Noarbe I, Soares-Santos M, Suchyta E, Tarle G, To C, Tucker BE, Tucker DL, Varga TN. Using host galaxy spectroscopy to explore systematics in the standardization of Type Ia supernovae. Monthly Notices of the Royal Astronomical Society. 2022 Dec 1;517(3):4291–4304.
Journal cover image

Published In

Monthly Notices of the Royal Astronomical Society

DOI

EISSN

1365-2966

ISSN

0035-8711

Publication Date

December 1, 2022

Volume

517

Issue

3

Start / End Page

4291 / 4304

Related Subject Headings

  • Astronomy & Astrophysics
  • 5109 Space sciences
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0201 Astronomical and Space Sciences