First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters

T. M.C. Abbott; S. Allam; P. Andersen; C. Angus; J. Asorey; A. Avelino; S. Avila; B. A. Bassett; K. Bechtol; G. M. Bernstein; E. Bertin; D. Brooks; D. Brout; P. Brown; D. L. Burke; J. Calcino; A. Carnero Rosell; D. Carollo; M. Carrasco Kind; J. Carretero; R. Casas; F. J. Castander; R. Cawthon; P. Challis; M. Childress; A. Clocchiatti; C. E. Cunha; C. B. D'Andrea; L. N. Da Costa; C. Davis; T. M. Davis; J. De Vicente; D. L. Depoy; S. Desai; H. T. Diehl; P. Doel; A. Drlica-Wagner; T. F. Eifler; A. E. Evrard; E. Fernandez; A. V. Filippenko; D. A. Finley; B. Flaugher; R. J. Foley; P. Fosalba; J. Frieman; L. Galbany; J. García-Bellido; E. Gaztanaga; T. Giannantonio; K. Glazebrook; D. A. Goldstein; S. González-Gaitán; D. Gruen; R. A. Gruendl; J. Gschwend; R. R. Gupta; G. Gutierrez; W. G. Hartley; S. R. Hinton; D. L. Hollowood; K. Honscheid; J. K. Hoormann; B. Hoyle; D. J. James; T. Jeltema; M. W.G. Johnson; M. D. Johnson; E. Kasai; S. Kent; R. Kessler; A. G. Kim; R. P. Kirshner; E. Kovacs; E. Krause; R. Kron; K. Kuehn; S. Kuhlmann; N. Kuropatkin; O. Lahav; J. Lasker; G. F. Lewis; T. S. Li; C. Lidman; M. Lima; H. Lin; E. Macaulay; M. A.G. Maia; K. S. Mandel; M. March; J. Marriner; J. L. Marshall; P. Martini; F. Menanteau; C. J. Miller; R. Miquel; V. Miranda; J. J. Mohr; E. Morganson; D. Muthukrishna; A. Möller; E. Neilsen; R. C. Nichol; B. Nord; P. Nugent; R. L.C. Ogando; A. Palmese; Y. C. Pan; A. A. Plazas; M. Pursiainen; A. K. Romer; A. Roodman; E. Rozo; E. S. Rykoff; M. Sako; E. Sanchez; V. Scarpine; R. Schindler; M. Schubnell; D. Scolnic; S. Serrano; I. Sevilla-Noarbe; R. Sharp; M. Smith; M. Soares-Santos; F. Sobreira; N. E. Sommer; H. Spinka; E. Suchyta; M. Sullivan; E. Swann; G. Tarle; D. Thomas; R. C. Thomas; M. A. Troxel; B. E. Tucker; S. A. Uddin; A. R. Walker; W. Wester; P. Wiseman; R. C. Wolf; B. Yanny; B. Zhang; Y. Zhang

doi:10.3847/2041-8213/ab04fa

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters

T. M.C. Abbott, S. Allam, P. Andersen, C. Angus, J. Asorey, A. Avelino, S. Avila, B. A. Bassett, K. Bechtol, G. M. Bernstein, E. Bertin, D. Brooks, D. Brout, P. Brown, D. L. Burke, J. Calcino, A. Carnero Rosell, D. Carollo, M. Carrasco Kind, J. CarreteroR. Casas, F. J. Castander, R. Cawthon, P. Challis, M. Childress, A. Clocchiatti, C. E. Cunha, C. B. D'Andrea, L. N. Da Costa, C. Davis, T. M. Davis, J. De Vicente, D. L. Depoy, S. Desai, H. T. Diehl, P. Doel, A. Drlica-Wagner, T. F. Eifler, A. E. Evrard, E. Fernandez, A. V. Filippenko, D. A. Finley, B. Flaugher, R. J. Foley, P. Fosalba, J. Frieman, L. Galbany, J. García-Bellido, E. Gaztanaga, T. Giannantonio, K. Glazebrook, D. A. Goldstein, S. González-Gaitán, D. Gruen, R. A. Gruendl, J. Gschwend, R. R. Gupta, G. Gutierrez, W. G. Hartley, S. R. Hinton, D. L. Hollowood, K. Honscheid, J. K. Hoormann, B. Hoyle, D. J. James, T. Jeltema, M. W.G. Johnson, M. D. Johnson, E. Kasai, S. Kent, R. Kessler, A. G. Kim, R. P. Kirshner, E. Kovacs, E. Krause, R. Kron, K. Kuehn, S. Kuhlmann, N. Kuropatkin, O. Lahav, J. Lasker, G. F. Lewis, T. S. Li, C. Lidman, M. Lima, H. Lin, E. Macaulay, M. A.G. Maia, K. S. Mandel, M. March, J. Marriner, J. L. Marshall, P. Martini, F. Menanteau, C. J. Miller, R. Miquel, V. Miranda, J. J. Mohr, E. Morganson, D. Muthukrishna, A. Möller, E. Neilsen, R. C. Nichol, B. Nord, P. Nugent, R. L.C. Ogando, A. Palmese, Y. C. Pan, A. A. Plazas, M. Pursiainen, A. K. Romer, A. Roodman, E. Rozo, E. S. Rykoff, M. Sako, E. Sanchez, V. Scarpine, R. Schindler, M. Schubnell, D. Scolnic, S. Serrano, I. Sevilla-Noarbe, R. Sharp, M. Smith, M. Soares-Santos, F. Sobreira, N. E. Sommer, H. Spinka, E. Suchyta, M. Sullivan, E. Swann, G. Tarle, D. Thomas, R. C. Thomas, M. A. Troxel, B. E. Tucker, S. A. Uddin, A. R. Walker, W. Wester, P. Wiseman, R. C. Wolf, B. Yanny, B. Zhang, Y. Zhang

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Abstract

We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from the Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample of 207 spectroscopically confirmed SNe Ia from the first three years of DES-SN, combined with a low-redshift sample of 122 SNe from the literature. Our "DES-SN3YR" result from these 329 SNe Ia is based on a series of companion analyses and improvements covering SN Ia discovery, spectroscopic selection, photometry, calibration, distance bias corrections, and evaluation of systematic uncertainties. For a flat ΛCDM model we find a matter density Ω _m = 0.331 ± 0.038. For a flat wCDM model, and combining our SN Ia constraints with those from the cosmic microwave background (CMB), we find a dark energy equation of state w = -0.978 ± 0.059, and ω _m = 0.321 ± 0.018. For a flat w ₀ w _a CDM model, and combining probes from SN Ia, CMB and baryon acoustic oscillations, we find w0 = -0.885 ± 0.114 and w _a = -0.387 ± 0.430. These results are in agreement with a cosmological constant and with previous constraints using SNe Ia (Pantheon, JLA).

Original language	English
Article number	L30
Journal	Astrophysical Journal Letters
Volume	872
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/ab04fa
State	Published - 2019

Funding

Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico and the Ministério da Ciência, Tecnologia e Inovação, the Deutsche Forschungs-gemeinschaft, and the Collaborating Institutions in the Dark Energy Survey. The DES data management system is supported by the National Science Foundation under grant No. AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2015-71825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, 306478, and 615929. We acknowledge support from the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project No. CE110001020, and the Brazilian Instituto Nacional de Ciênciae Tecnologia (INCT) e-Universe (CNPq grant 465376/2014-2). Based in part on observations at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. This manuscript has been authored by Fermi Research Alliance, LLC under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.

Funders	Funder number
Australian Research Council Centre of Excellence for All-sky Astrophysics	CE110001020
Brazilian Instituto Nacional de Ciênciae Tecnologia
Collaborating Institutions in the Dark Energy Survey
Deutsche Forschungs-gemeinschaft
European Union’s Seventh Framework Program
FP7/2007
Fermi Research Alliance, LLC	DE-AC02-07CH11359
INCT
Kavli Institute of Cosmological Physics at the University of Chicago
Ministry of Science and Education of Spain
Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University
National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign
U.S. National Science Foundation
National Science Foundation	AST-1138766, AST-1536171
U.S. Department of Energy
Office of Science
High Energy Physics
Seventh Framework Programme	1138766, 240672, 615929, 306478, 291329
Higher Education Funding Council for England
Center for Cosmology and Astroparticle Physics, Ohio State University
Science and Technology Facilities Council
European Commission
European Research Council
Generalitat de Catalunya
Ministerio de Economía y Competitividad	SEV-2016-0588, SEV-2016-0597, ESP2015-66861, MDM-2015-0509, FPA2015-68048, AYA2015-71825
Ministério da Ciência, Tecnologia e Inovação
Conselho Nacional de Desenvolvimento Científico e Tecnológico	465376/2014-2
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Financiadora de Estudos e Projetos
European Regional Development Fund

Keywords

dark energy
dark matter

Access to Document

10.3847/2041-8213/ab04fa

Cite this

Abbott, T. M. C., Allam, S., Andersen, P., Angus, C., Asorey, J., Avelino, A., Avila, S., Bassett, B. A., Bechtol, K., Bernstein, G. M., Bertin, E., Brooks, D., Brout, D., Brown, P., Burke, D. L., Calcino, J., Rosell, A. C., Carollo, D., Carrasco Kind, M., ... Zhang, Y. (2019). First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters. Astrophysical Journal Letters, 872(2), Article L30. https://doi.org/10.3847/2041-8213/ab04fa

@article{12e8865633c548d380b386110eefaadc,

title = "First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters",

abstract = " We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from the Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample of 207 spectroscopically confirmed SNe Ia from the first three years of DES-SN, combined with a low-redshift sample of 122 SNe from the literature. Our {"}DES-SN3YR{"} result from these 329 SNe Ia is based on a series of companion analyses and improvements covering SN Ia discovery, spectroscopic selection, photometry, calibration, distance bias corrections, and evaluation of systematic uncertainties. For a flat ΛCDM model we find a matter density Ω m = 0.331 ± 0.038. For a flat wCDM model, and combining our SN Ia constraints with those from the cosmic microwave background (CMB), we find a dark energy equation of state w = -0.978 ± 0.059, and ω m = 0.321 ± 0.018. For a flat w 0 w a CDM model, and combining probes from SN Ia, CMB and baryon acoustic oscillations, we find w0 = -0.885 ± 0.114 and w a = -0.387 ± 0.430. These results are in agreement with a cosmological constant and with previous constraints using SNe Ia (Pantheon, JLA).",

keywords = "dark energy, dark matter",

author = "Abbott, {T. M.C.} and S. Allam and P. Andersen and C. Angus and J. Asorey and A. Avelino and S. Avila and Bassett, {B. A.} and K. Bechtol and Bernstein, {G. M.} and E. Bertin and D. Brooks and D. Brout and P. Brown and Burke, {D. L.} and J. Calcino and Rosell, {A. Carnero} and D. Carollo and {Carrasco Kind}, M. and J. Carretero and R. Casas and Castander, {F. J.} and R. Cawthon and P. Challis and M. Childress and A. Clocchiatti and Cunha, {C. E.} and D'Andrea, {C. B.} and {Da Costa}, {L. N.} and C. Davis and Davis, {T. M.} and {De Vicente}, J. and Depoy, {D. L.} and S. Desai and Diehl, {H. T.} and P. Doel and A. Drlica-Wagner and Eifler, {T. F.} and Evrard, {A. E.} and E. Fernandez and Filippenko, {A. V.} and Finley, {D. A.} and B. Flaugher and Foley, {R. J.} and P. Fosalba and J. Frieman and L. Galbany and J. Garc{\'i}a-Bellido and E. Gaztanaga and T. Giannantonio and K. Glazebrook and Goldstein, {D. A.} and S. Gonz{\'a}lez-Gait{\'a}n and D. Gruen and Gruendl, {R. A.} and J. Gschwend and Gupta, {R. R.} and G. Gutierrez and Hartley, {W. G.} and Hinton, {S. R.} and Hollowood, {D. L.} and K. Honscheid and Hoormann, {J. K.} and B. Hoyle and James, {D. J.} and T. Jeltema and Johnson, {M. W.G.} and Johnson, {M. D.} and E. Kasai and S. Kent and R. Kessler and Kim, {A. G.} and Kirshner, {R. P.} and E. Kovacs and E. Krause and R. Kron and K. Kuehn and S. Kuhlmann and N. Kuropatkin and O. Lahav and J. Lasker and Lewis, {G. F.} and Li, {T. S.} and C. Lidman and M. Lima and H. Lin and E. Macaulay and Maia, {M. A.G.} and Mandel, {K. S.} and M. March and J. Marriner and Marshall, {J. L.} and P. Martini and F. Menanteau and Miller, {C. J.} and R. Miquel and V. Miranda and Mohr, {J. J.} and E. Morganson and D. Muthukrishna and A. M{\"o}ller and E. Neilsen and Nichol, {R. C.} and B. Nord and P. Nugent and Ogando, {R. L.C.} and A. Palmese and Pan, {Y. C.} and Plazas, {A. A.} and M. Pursiainen and Romer, {A. K.} and A. Roodman and E. Rozo and Rykoff, {E. S.} and M. Sako and E. Sanchez and V. Scarpine and R. Schindler and M. Schubnell and D. Scolnic and S. Serrano and I. Sevilla-Noarbe and R. Sharp and M. Smith and M. Soares-Santos and F. Sobreira and Sommer, {N. E.} and H. Spinka and E. Suchyta and M. Sullivan and E. Swann and G. Tarle and D. Thomas and Thomas, {R. C.} and Troxel, {M. A.} and Tucker, {B. E.} and Uddin, {S. A.} and Walker, {A. R.} and W. Wester and P. Wiseman and Wolf, {R. C.} and B. Yanny and B. Zhang and Y. Zhang",

year = "2019",

doi = "10.3847/2041-8213/ab04fa",

language = "English",

volume = "872",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "American Astronomical Society",

number = "2",

}

Abbott, TMC, Allam, S, Andersen, P, Angus, C, Asorey, J, Avelino, A, Avila, S, Bassett, BA, Bechtol, K, Bernstein, GM, Bertin, E, Brooks, D, Brout, D, Brown, P, Burke, DL, Calcino, J, Rosell, AC, Carollo, D, Carrasco Kind, M, Carretero, J, Casas, R, Castander, FJ, Cawthon, R, Challis, P, Childress, M, Clocchiatti, A, Cunha, CE, D'Andrea, CB, Da Costa, LN, Davis, C, Davis, TM, De Vicente, J, Depoy, DL, Desai, S, Diehl, HT, Doel, P, Drlica-Wagner, A, Eifler, TF, Evrard, AE, Fernandez, E, Filippenko, AV, Finley, DA, Flaugher, B, Foley, RJ, Fosalba, P, Frieman, J, Galbany, L, García-Bellido, J, Gaztanaga, E, Giannantonio, T, Glazebrook, K, Goldstein, DA, González-Gaitán, S, Gruen, D, Gruendl, RA, Gschwend, J, Gupta, RR, Gutierrez, G, Hartley, WG, Hinton, SR, Hollowood, DL, Honscheid, K, Hoormann, JK, Hoyle, B, James, DJ, Jeltema, T, Johnson, MWG, Johnson, MD, Kasai, E, Kent, S, Kessler, R, Kim, AG, Kirshner, RP, Kovacs, E, Krause, E, Kron, R, Kuehn, K, Kuhlmann, S, Kuropatkin, N, Lahav, O, Lasker, J, Lewis, GF, Li, TS, Lidman, C, Lima, M, Lin, H, Macaulay, E, Maia, MAG, Mandel, KS, March, M, Marriner, J, Marshall, JL, Martini, P, Menanteau, F, Miller, CJ, Miquel, R, Miranda, V, Mohr, JJ, Morganson, E, Muthukrishna, D, Möller, A, Neilsen, E, Nichol, RC, Nord, B, Nugent, P, Ogando, RLC, Palmese, A, Pan, YC, Plazas, AA, Pursiainen, M, Romer, AK, Roodman, A, Rozo, E, Rykoff, ES, Sako, M, Sanchez, E, Scarpine, V, Schindler, R, Schubnell, M, Scolnic, D, Serrano, S, Sevilla-Noarbe, I, Sharp, R, Smith, M, Soares-Santos, M, Sobreira, F, Sommer, NE, Spinka, H, Suchyta, E, Sullivan, M, Swann, E, Tarle, G, Thomas, D, Thomas, RC, Troxel, MA, Tucker, BE, Uddin, SA, Walker, AR, Wester, W, Wiseman, P, Wolf, RC, Yanny, B, Zhang, B & Zhang, Y 2019, 'First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters', Astrophysical Journal Letters, vol. 872, no. 2, L30. https://doi.org/10.3847/2041-8213/ab04fa

TY - JOUR

T1 - First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey

T2 - Constraints on Cosmological Parameters

AU - Abbott, T. M.C.

AU - Allam, S.

AU - Andersen, P.

AU - Angus, C.

AU - Asorey, J.

AU - Avelino, A.

AU - Avila, S.

AU - Bassett, B. A.

AU - Bechtol, K.

AU - Bernstein, G. M.

AU - Bertin, E.

AU - Brooks, D.

AU - Brout, D.

AU - Brown, P.

AU - Burke, D. L.

AU - Calcino, J.

AU - Rosell, A. Carnero

AU - Carollo, D.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Casas, R.

AU - Castander, F. J.

AU - Cawthon, R.

AU - Challis, P.

AU - Childress, M.

AU - Clocchiatti, A.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - Da Costa, L. N.

AU - Davis, C.

AU - Davis, T. M.

AU - De Vicente, J.

AU - Depoy, D. L.

AU - Desai, S.

AU - Diehl, H. T.

AU - Doel, P.

AU - Drlica-Wagner, A.

AU - Eifler, T. F.

AU - Evrard, A. E.

AU - Fernandez, E.

AU - Filippenko, A. V.

AU - Finley, D. A.

AU - Flaugher, B.

AU - Foley, R. J.

AU - Fosalba, P.

AU - Frieman, J.

AU - Galbany, L.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Giannantonio, T.

AU - Glazebrook, K.

AU - Goldstein, D. A.

AU - González-Gaitán, S.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gschwend, J.

AU - Gupta, R. R.

AU - Gutierrez, G.

AU - Hartley, W. G.

AU - Hinton, S. R.

AU - Hollowood, D. L.

AU - Honscheid, K.

AU - Hoormann, J. K.

AU - Hoyle, B.

AU - James, D. J.

AU - Jeltema, T.

AU - Johnson, M. W.G.

AU - Johnson, M. D.

AU - Kasai, E.

AU - Kent, S.

AU - Kessler, R.

AU - Kim, A. G.

AU - Kirshner, R. P.

AU - Kovacs, E.

AU - Krause, E.

AU - Kron, R.

AU - Kuehn, K.

AU - Kuhlmann, S.

AU - Kuropatkin, N.

AU - Lahav, O.

AU - Lasker, J.

AU - Lewis, G. F.

AU - Li, T. S.

AU - Lidman, C.

AU - Lima, M.

AU - Lin, H.

AU - Macaulay, E.

AU - Maia, M. A.G.

AU - Mandel, K. S.

AU - March, M.

AU - Marriner, J.

AU - Marshall, J. L.

AU - Martini, P.

AU - Menanteau, F.

AU - Miller, C. J.

AU - Miquel, R.

AU - Miranda, V.

AU - Mohr, J. J.

AU - Morganson, E.

AU - Muthukrishna, D.

AU - Möller, A.

AU - Neilsen, E.

AU - Nichol, R. C.

AU - Nord, B.

AU - Nugent, P.

AU - Ogando, R. L.C.

AU - Palmese, A.

AU - Pan, Y. C.

AU - Plazas, A. A.

AU - Pursiainen, M.

AU - Romer, A. K.

AU - Roodman, A.

AU - Rozo, E.

AU - Rykoff, E. S.

AU - Sako, M.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Schindler, R.

AU - Schubnell, M.

AU - Scolnic, D.

AU - Serrano, S.

AU - Sevilla-Noarbe, I.

AU - Sharp, R.

AU - Smith, M.

AU - Soares-Santos, M.

AU - Sobreira, F.

AU - Sommer, N. E.

AU - Spinka, H.

AU - Suchyta, E.

AU - Sullivan, M.

AU - Swann, E.

AU - Tarle, G.

AU - Thomas, D.

AU - Thomas, R. C.

AU - Troxel, M. A.

AU - Tucker, B. E.

AU - Uddin, S. A.

AU - Walker, A. R.

AU - Wester, W.

AU - Wiseman, P.

AU - Wolf, R. C.

AU - Yanny, B.

AU - Zhang, B.

AU - Zhang, Y.

PY - 2019

Y1 - 2019

N2 - We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from the Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample of 207 spectroscopically confirmed SNe Ia from the first three years of DES-SN, combined with a low-redshift sample of 122 SNe from the literature. Our "DES-SN3YR" result from these 329 SNe Ia is based on a series of companion analyses and improvements covering SN Ia discovery, spectroscopic selection, photometry, calibration, distance bias corrections, and evaluation of systematic uncertainties. For a flat ΛCDM model we find a matter density Ω m = 0.331 ± 0.038. For a flat wCDM model, and combining our SN Ia constraints with those from the cosmic microwave background (CMB), we find a dark energy equation of state w = -0.978 ± 0.059, and ω m = 0.321 ± 0.018. For a flat w 0 w a CDM model, and combining probes from SN Ia, CMB and baryon acoustic oscillations, we find w0 = -0.885 ± 0.114 and w a = -0.387 ± 0.430. These results are in agreement with a cosmological constant and with previous constraints using SNe Ia (Pantheon, JLA).

AB - We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from the Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample of 207 spectroscopically confirmed SNe Ia from the first three years of DES-SN, combined with a low-redshift sample of 122 SNe from the literature. Our "DES-SN3YR" result from these 329 SNe Ia is based on a series of companion analyses and improvements covering SN Ia discovery, spectroscopic selection, photometry, calibration, distance bias corrections, and evaluation of systematic uncertainties. For a flat ΛCDM model we find a matter density Ω m = 0.331 ± 0.038. For a flat wCDM model, and combining our SN Ia constraints with those from the cosmic microwave background (CMB), we find a dark energy equation of state w = -0.978 ± 0.059, and ω m = 0.321 ± 0.018. For a flat w 0 w a CDM model, and combining probes from SN Ia, CMB and baryon acoustic oscillations, we find w0 = -0.885 ± 0.114 and w a = -0.387 ± 0.430. These results are in agreement with a cosmological constant and with previous constraints using SNe Ia (Pantheon, JLA).

KW - dark energy

KW - dark matter

UR - http://www.scopus.com/inward/record.url?scp=85063541330&partnerID=8YFLogxK

U2 - 10.3847/2041-8213/ab04fa

DO - 10.3847/2041-8213/ab04fa

M3 - Article

AN - SCOPUS:85063541330

SN - 2041-8205

VL - 872

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2

M1 - L30

ER -

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters

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