Dark Energy Survey Year 1 Results: A Precise H0 Estimate from DES Y1, BAO, and D/H Data

The Dark Energy Survey and the South Pole Telescope Collaborations

doi:10.1093/MNRAS/STY1939

Dark Energy Survey Year 1 Results: A Precise H₀ Estimate from DES Y1, BAO, and D/H Data

The Dark Energy Survey and the South Pole Telescope Collaborations

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Abstract

We combine Dark Energy Survey Year 1 clustering and weak lensing data with baryon acoustic oscillations and Big Bang nucleosynthesis experiments to constrain the Hubble constant. Assuming a flat ΛCDM model with minimal neutrino mass (Σm_υ = 0.06 eV), we find H₀ = 67.4 _-1.2 ^+1.1 km s^-1 Mpc^-1 (68 per cent CL). This result is completely independent of Hubble constant measurements based on the distance ladder, cosmic microwave background anisotropies (both temperature and polarization), and strong lensing constraints. There are now five data sets that: (a) have no shared observational systematics; and (b) each constrains the Hubble constant with fractional uncertainty at the few-per cent level. We compare these five independent estimates, and find that, as a set, the differences between them are significant at the 2.5σ level (χ²/dof = 24/11, probability to exceed = 1.1 per cent). Having set the threshold for consistency at 3σ, we combine all five data sets to arrive at H₀ = 69.3_-0.6 ^+0.4 km s^-1 Mpc^-1.

Original language	English (US)
Pages (from-to)	3879-3888
Number of pages	10
Journal	Monthly Notices of the Royal Astronomical Society
Volume	480
Issue number	3
DOIs	https://doi.org/10.1093/MNRAS/STY1939
State	Published - 2018

Keywords

Cosmological parameters
Cosmology: observations
Distance scale

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1093/MNRAS/STY1939

Library availability

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Cite this

@article{3bae22c7f3ab4aec961fcde692f41eb4,

title = "Dark Energy Survey Year 1 Results: A Precise H0 Estimate from DES Y1, BAO, and D/H Data",

abstract = "We combine Dark Energy Survey Year 1 clustering and weak lensing data with baryon acoustic oscillations and Big Bang nucleosynthesis experiments to constrain the Hubble constant. Assuming a flat ΛCDM model with minimal neutrino mass (Σmυ = 0.06 eV), we find H0 = 67.4 -1.2 +1.1 km s-1 Mpc-1 (68 per cent CL). This result is completely independent of Hubble constant measurements based on the distance ladder, cosmic microwave background anisotropies (both temperature and polarization), and strong lensing constraints. There are now five data sets that: (a) have no shared observational systematics; and (b) each constrains the Hubble constant with fractional uncertainty at the few-per cent level. We compare these five independent estimates, and find that, as a set, the differences between them are significant at the 2.5σ level (χ2/dof = 24/11, probability to exceed = 1.1 per cent). Having set the threshold for consistency at 3σ, we combine all five data sets to arrive at H0 = 69.3-0.6 +0.4 km s-1 Mpc-1.",

keywords = "Cosmological parameters, Cosmology: observations, Distance scale",

author = "{The Dark Energy Survey and the South Pole Telescope Collaborations} and Abbott, {T. M.C.} and Abdalla, {F. B.} and J. Annis and K. Bechtol and J. Blazek and Benson, {B. A.} and Bernstein, {R. A.} and Bernstein, {G. M.} and E. Bertin and D. Brooks and Burke, {D. L.} and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and Castander, {F. J.} and Chang, {C. L.} and Crawford, {T. M.} and Cunha, {C. E.} and D'Andrea, {C. B.} and {da Costa}, {L. N.} and C. Davis and J. DeRose and S. Desai and Diehl, {H. T.} and Dietrich, {J. P.} and P. Doel and A. Drlica-Wagner and Evrard, {A. E.} and E. Fernandez and B. Flaugher and P. Fosalba and J. Frieman and J. Garc{\'i}a-Bellido and E. Gaztanaga and Gerdes, {D. W.} and T. Giannantonio and D. Gruen and Gruendl, {R. A.} and J. Gschwend and G. Gutierrez and Hartley, {W. G.} and Henning, {J. W.} and K. Honscheid and B. Hoyle and D. Huterer and B. Jain and James, {D. J.} and M. Jarvis and T. Jeltema and Johnson, {M. W.G.}",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s).",

year = "2018",

doi = "10.1093/MNRAS/STY1939",

language = "English (US)",

volume = "480",

pages = "3879--3888",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

TY - JOUR

T1 - Dark Energy Survey Year 1 Results

T2 - A Precise H0 Estimate from DES Y1, BAO, and D/H Data

AU - The Dark Energy Survey and the South Pole Telescope Collaborations

AU - Abbott, T. M.C.

AU - Abdalla, F. B.

AU - Annis, J.

AU - Bechtol, K.

AU - Blazek, J.

AU - Benson, B. A.

AU - Bernstein, R. A.

AU - Bernstein, G. M.

AU - Bertin, E.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Castander, F. J.

AU - Chang, C. L.

AU - Crawford, T. M.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - da Costa, L. N.

AU - Davis, C.

AU - DeRose, J.

AU - Desai, S.

AU - Diehl, H. T.

AU - Dietrich, J. P.

AU - Doel, P.

AU - Drlica-Wagner, A.

AU - Evrard, A. E.

AU - Fernandez, E.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Gerdes, D. W.

AU - Giannantonio, T.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gutierrez, G.

AU - Hartley, W. G.

AU - Henning, J. W.

AU - Honscheid, K.

AU - Hoyle, B.

AU - Huterer, D.

AU - Jain, B.

AU - James, D. J.

AU - Jarvis, M.

AU - Jeltema, T.

AU - Johnson, M. W.G.

PY - 2018

Y1 - 2018

N2 - We combine Dark Energy Survey Year 1 clustering and weak lensing data with baryon acoustic oscillations and Big Bang nucleosynthesis experiments to constrain the Hubble constant. Assuming a flat ΛCDM model with minimal neutrino mass (Σmυ = 0.06 eV), we find H0 = 67.4 -1.2 +1.1 km s-1 Mpc-1 (68 per cent CL). This result is completely independent of Hubble constant measurements based on the distance ladder, cosmic microwave background anisotropies (both temperature and polarization), and strong lensing constraints. There are now five data sets that: (a) have no shared observational systematics; and (b) each constrains the Hubble constant with fractional uncertainty at the few-per cent level. We compare these five independent estimates, and find that, as a set, the differences between them are significant at the 2.5σ level (χ2/dof = 24/11, probability to exceed = 1.1 per cent). Having set the threshold for consistency at 3σ, we combine all five data sets to arrive at H0 = 69.3-0.6 +0.4 km s-1 Mpc-1.

AB - We combine Dark Energy Survey Year 1 clustering and weak lensing data with baryon acoustic oscillations and Big Bang nucleosynthesis experiments to constrain the Hubble constant. Assuming a flat ΛCDM model with minimal neutrino mass (Σmυ = 0.06 eV), we find H0 = 67.4 -1.2 +1.1 km s-1 Mpc-1 (68 per cent CL). This result is completely independent of Hubble constant measurements based on the distance ladder, cosmic microwave background anisotropies (both temperature and polarization), and strong lensing constraints. There are now five data sets that: (a) have no shared observational systematics; and (b) each constrains the Hubble constant with fractional uncertainty at the few-per cent level. We compare these five independent estimates, and find that, as a set, the differences between them are significant at the 2.5σ level (χ2/dof = 24/11, probability to exceed = 1.1 per cent). Having set the threshold for consistency at 3σ, we combine all five data sets to arrive at H0 = 69.3-0.6 +0.4 km s-1 Mpc-1.

KW - Cosmological parameters

KW - Cosmology: observations

KW - Distance scale

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UR - http://www.scopus.com/inward/citedby.url?scp=85055268179&partnerID=8YFLogxK

U2 - 10.1093/MNRAS/STY1939

DO - 10.1093/MNRAS/STY1939

M3 - Article

AN - SCOPUS:85055268179

SN - 0035-8711

VL - 480

SP - 3879

EP - 3888

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -