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, Matias 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, Felipe 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

Research output: Contribution to journalArticle

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 languageEnglish (US)
Article numberL30
JournalAstrophysical Journal Letters
Volume872
Issue number2
DOIs
StatePublished - Jan 1 2019

Fingerprint

cosmology
dark energy
supernovae
energy
microwaves
equation of state
photometry
baryons
coverings
equations of state
acoustics
oscillation
probe
calibration
oscillations
evaluation
probes
parameter
programme
microwave

Keywords

  • dark energy
  • dark matter

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey : Constraints on Cosmological Parameters. / 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. Carnero; Carollo, D.; Kind, Matias Carrasco; Carretero, J.; Casas, R.; Castander, F. J.; Cawthon, R.; Challis, P.; Childress, M.; Clocchiatti, A.; Cunha, C. E.; D'Andrea, C. B.; Da Costa, L. N.; Davis, C.; Davis, T. M.; De Vicente, J.; Depoy, D. L.; Desai, S.; Diehl, H. T.; Doel, P.; Drlica-Wagner, A.; Eifler, T. F.; Evrard, A. E.; Fernandez, E.; Filippenko, A. V.; Finley, D. A.; Flaugher, B.; Foley, R. J.; Fosalba, P.; Frieman, J.; Galbany, L.; García-Bellido, J.; Gaztanaga, E.; Giannantonio, T.; Glazebrook, K.; Goldstein, D. A.; González-Gaitán, S.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gupta, R. R.; Gutierrez, G.; Hartley, W. G.; Hinton, S. R.; Hollowood, D. L.; Honscheid, K.; Hoormann, J. K.; Hoyle, B.; James, D. J.; Jeltema, T.; Johnson, M. W.G.; Johnson, M. D.; Kasai, E.; Kent, S.; Kessler, R.; Kim, A. G.; Kirshner, R. P.; Kovacs, E.; Krause, E.; Kron, R.; Kuehn, K.; Kuhlmann, S.; Kuropatkin, N.; Lahav, O.; Lasker, J.; Lewis, G. F.; Li, T. S.; Lidman, C.; Lima, M.; Lin, H.; Macaulay, E.; Maia, M. A.G.; Mandel, K. S.; March, M.; Marriner, J.; Marshall, J. L.; Martini, P.; Menanteau, Felipe; Miller, C. J.; Miquel, R.; Miranda, V.; Mohr, J. J.; Morganson, E.; Muthukrishna, D.; Möller, A.; Neilsen, E.; Nichol, R. C.; Nord, B.; Nugent, P.; Ogando, R. L.C.; Palmese, A.; Pan, Y. C.; Plazas, A. A.; Pursiainen, M.; Romer, A. K.; Roodman, A.; Rozo, E.; Rykoff, E. S.; 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, N. E.; Spinka, H.; Suchyta, E.; Sullivan, M.; Swann, E.; Tarle, G.; Thomas, D.; Thomas, R. C.; Troxel, M. A.; Tucker, B. E.; Uddin, S. A.; Walker, A. R.; Wester, W.; Wiseman, P.; Wolf, R. C.; Yanny, B.; Zhang, B.; Zhang, Y.

In: Astrophysical Journal Letters, Vol. 872, No. 2, L30, 01.01.2019.

Research output: Contribution to journalArticle

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, Kind, MC, 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
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. Carnero ; Carollo, D. ; Kind, Matias Carrasco ; Carretero, J. ; Casas, R. ; Castander, F. J. ; Cawthon, R. ; Challis, P. ; Childress, M. ; Clocchiatti, A. ; Cunha, C. E. ; D'Andrea, C. B. ; Da Costa, L. N. ; Davis, C. ; Davis, T. M. ; De Vicente, J. ; Depoy, D. L. ; Desai, S. ; Diehl, H. T. ; Doel, P. ; Drlica-Wagner, A. ; Eifler, T. F. ; Evrard, A. E. ; Fernandez, E. ; Filippenko, A. V. ; Finley, D. A. ; Flaugher, B. ; Foley, R. J. ; Fosalba, P. ; Frieman, J. ; Galbany, L. ; García-Bellido, J. ; Gaztanaga, E. ; Giannantonio, T. ; Glazebrook, K. ; Goldstein, D. A. ; González-Gaitán, S. ; Gruen, D. ; Gruendl, R. A. ; Gschwend, J. ; Gupta, R. R. ; Gutierrez, G. ; Hartley, W. G. ; Hinton, S. R. ; Hollowood, D. L. ; Honscheid, K. ; Hoormann, J. K. ; Hoyle, B. ; James, D. J. ; Jeltema, T. ; Johnson, M. W.G. ; Johnson, M. D. ; Kasai, E. ; Kent, S. ; Kessler, R. ; Kim, A. G. ; Kirshner, R. P. ; Kovacs, E. ; Krause, E. ; Kron, R. ; Kuehn, K. ; Kuhlmann, S. ; Kuropatkin, N. ; Lahav, O. ; Lasker, J. ; Lewis, G. F. ; Li, T. S. ; Lidman, C. ; Lima, M. ; Lin, H. ; Macaulay, E. ; Maia, M. A.G. ; Mandel, K. S. ; March, M. ; Marriner, J. ; Marshall, J. L. ; Martini, P. ; Menanteau, Felipe ; Miller, C. J. ; Miquel, R. ; Miranda, V. ; Mohr, J. J. ; Morganson, E. ; Muthukrishna, D. ; Möller, A. ; Neilsen, E. ; Nichol, R. C. ; Nord, B. ; Nugent, P. ; Ogando, R. L.C. ; Palmese, A. ; Pan, Y. C. ; Plazas, A. A. ; Pursiainen, M. ; Romer, A. K. ; Roodman, A. ; Rozo, E. ; Rykoff, E. S. ; 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, N. E. ; Spinka, H. ; Suchyta, E. ; Sullivan, M. ; Swann, E. ; Tarle, G. ; Thomas, D. ; Thomas, R. C. ; Troxel, M. A. ; Tucker, B. E. ; Uddin, S. A. ; Walker, A. R. ; Wester, W. ; Wiseman, P. ; Wolf, R. C. ; Yanny, B. ; Zhang, B. ; Zhang, Y. / First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey : Constraints on Cosmological Parameters. In: Astrophysical Journal Letters. 2019 ; Vol. 872, No. 2.
@article{f320deab1ae04c378193e13f6ee08a83,
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 Kind, {Matias Carrasco} 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 Felipe 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",
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month = "1",
day = "1",
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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 - Kind, Matias Carrasco

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, Felipe

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 - 2019/1/1

Y1 - 2019/1/1

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

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

U2 - 10.3847/2041-8213/ab04fa

DO - 10.3847/2041-8213/ab04fa

M3 - Article

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VL - 872

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

SN - 2041-8205

IS - 2

M1 - L30

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