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  Studying Type II supernovae as cosmological standard candles using the Dark Energy Survey

de Jaeger, T., Galbany, L., González-Gaitán, S., Kessler, R., Filippenko, A. V., Förster, F., et al. (2020). Studying Type II supernovae as cosmological standard candles using the Dark Energy Survey. Monthly Notices of the Royal Astronomical Society, 495(4), 4860-4892. doi:10.1093/mnras/staa1402.

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de Jaeger, T., Author
Galbany, L., Author
González-Gaitán, S., Author
Kessler, R., Author
Filippenko, A. V., Author
Förster, F., Author
Hamuy, M., Author
Brown, P. J., Author
Davis, T. M., Author
Gutiérrez, C. P., Author
Inserra, C., Author
Lewis, G F., Author
Möller, A., Author
Scolnic, D., Author
Smith, M., Author
Brout, D., Author
Carollo, D., Author
Foley, R. J., Author
Glazebrook, K., Author
Hinton, S. R., Author
Macaulay, E., AuthorNichol, B., AuthorSako, M., AuthorSommer, N. E., AuthorTucker, B. E., AuthorAbbott, T. M. C., AuthorAguena, M., AuthorAllam, S., AuthorAnnis, J., AuthorAvila, S., AuthorBertin, E., AuthorBhargava, S., AuthorBrooks, D., AuthorBurke, D. L., AuthorRosell, A. Carnero, AuthorKind, M. Carrasco, AuthorCarretero, J., AuthorCostanzi, M., AuthorCrocce, M., Authorda Costa, L. N., AuthorVicente, J. De, AuthorDesai, S., AuthorDiehl, H. T., AuthorDoel, P., AuthorDrlica-Wagner, A., AuthorEifler, T. F., AuthorEstrada, J., AuthorEverett, S., AuthorFlaugher, B., AuthorFosalba, P., AuthorFrieman, J., AuthorGarcía-Bellido, J., AuthorGaztanaga, E., AuthorGruen, D., AuthorGruendl, R. A., AuthorGschwend, J., AuthorGutierrez, G., AuthorHartley, W. G., AuthorHollowood, D. L., AuthorHonscheid, K., AuthorJames, D. J., AuthorKuehn, K., AuthorKuropatkin, N., AuthorLi, T. S., AuthorLima, M., AuthorMaia, M. A. G., AuthorMenanteau, F., AuthorMiquel, R., AuthorPalmese, A., AuthorPaz-Chinchón, F., AuthorPlazas, A. A., AuthorRomer, A. K., AuthorRoodman, A., AuthorSanchez, E., AuthorScarpine, V., AuthorSchubnell, M., AuthorSerrano, S., AuthorSevilla-Noarbe, I., AuthorSoares-Santos, M., AuthorSuchyta, E., AuthorSwanson, M. E. C., AuthorTarle, G., AuthorThomas, D., AuthorTucker, D. L., AuthorVarga, T. N.1, Author              Walker, A. R., AuthorWeller, J.1, Author              Wilkinson, R., Author more..
Affiliations:
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

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 Abstract: Despite vast improvements in the measurement of the cosmological parameters, the nature of dark energy and an accurate value of the Hubble constant (H0) in the Hubble–Lemaître law remain unknown. To break the current impasse, it is necessary to develop as many independent techniques as possible, such as the use of Type II supernovae (SNe II). The goal of this paper is to demonstrate the utility of SNe II for deriving accurate extragalactic distances, which will be an asset for the next generation of telescopes where more-distant SNe II will be discovered. More specifically, we present a sample from the Dark Energy Survey Supernova Program (DES-SN) consisting of 15 SNe II with photometric and spectroscopic information spanning a redshift range up to 0.35. Combining our DES SNe with publicly available samples, and using the standard candle method (SCM), we construct the largest available Hubble diagram with SNe II in the Hubble flow (70 SNe II) and find an observed dispersion of 0.27 mag. We demonstrate that adding a colour term to the SN II standardization does not reduce the scatter in the Hubble diagram. Although SNe II are viable as distance indicators, this work points out important issues for improving their utility as independent extragalactic beacons: find new correlations, define a more standard subclass of SNe II, construct new SN II templates, and dedicate more observing time to high-redshift SNe II. Finally, for the first time, we perform simulations to estimate the redshift-dependent distance-modulus bias due to selection effects.

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 Dates: 2020-05-22
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/staa1402
Other: LOCALID: 3252177
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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 495 (4) Sequence Number: - Start / End Page: 4860 - 4892 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150