Dark Energy Survey Year 3 results: Redshift calibration of the weak lensing source galaxies

J. Myles; A. Alarcon; A. Amon; C. Sánchez; S. Everett; J. DeRose; J. McCullough; D. Gruen; G. M. Bernstein; M. A. Troxel; S. Dodelson; A. Campos; N. MacCrann; B. Yin; M. Raveri; A. Amara; M. R. Becker; A. Choi; J. Cordero; K. Eckert; M. Gatti; G. Giannini; J. Gschwend; R. A. Gruendl; I. Harrison; W. G. Hartley; E. M. Huff; N. Kuropatkin; H. Lin; D. Masters; R. Miquel; J. Prat; A. Roodman; E. S. Rykoff; I. Sevilla-Noarbe; E. Sheldon; R. H. Wechsler; B. Yanny; T. M.C. Abbott; M. Aguena; S. Allam; J. Annis; D. Bacon; E. Bertin; S. Bhargava; S. L. Bridle; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; F. J. Castander; C. Conselice; M. Costanzi; M. Crocce; L. N. Da Costa; M. E.S. Pereira; S. Desai; H. T. Diehl; T. F. Eifler; J. Elvin-Poole; A. E. Evrard; I. Ferrero; A. Ferté; B. Flaugher; P. Fosalba; J. Frieman; J. García-Bellido; E. Gaztanaga; T. Giannantonio; S. R. Hinton; D. L. Hollowood; K. Honscheid; B. Hoyle; D. Huterer; D. J. James; E. Krause; K. Kuehn; O. Lahav; M. Lima; M. A.G. Maia; J. L. Marshall; P. Martini; P. Melchior; F. Menanteau; J. J. Mohr; R. Morgan; J. Muir; R. L.C. Ogando; A. Palmese; F. Paz-Chinchón; A. A. Plazas; M. Rodriguez-Monroy; S. Samuroff; E. Sanchez; V. Scarpine; L. F. Secco; S. Serrano; M. Smith; M. Soares-Santos; E. Suchyta; M. E.C. Swanson; G. Tarle; D. Thomas; C. To; T. N. Varga; J. Weller; W. Wester

doi:10.1093/mnras/stab1515

Dark Energy Survey Year 3 results: Redshift calibration of the weak lensing source galaxies

J. Myles, A. Alarcon, A. Amon, C. Sánchez, S. Everett, J. DeRose, J. McCullough, D. Gruen, G. M. Bernstein, M. A. Troxel, S. Dodelson, A. Campos, N. MacCrann, B. Yin, M. Raveri, A. Amara, M. R. Becker, A. Choi, J. Cordero, K. EckertM. Gatti, G. Giannini, J. Gschwend, R. A. Gruendl, I. Harrison, W. G. Hartley, E. M. Huff, N. Kuropatkin, H. Lin, D. Masters, R. Miquel, J. Prat, A. Roodman, E. S. Rykoff, I. Sevilla-Noarbe, E. Sheldon, R. H. Wechsler, B. Yanny, T. M.C. Abbott, M. Aguena, S. Allam, J. Annis, D. Bacon, E. Bertin, S. Bhargava, S. L. Bridle, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, C. Conselice, M. Costanzi, M. Crocce, L. N. Da Costa, M. E.S. Pereira, S. Desai, H. T. Diehl, T. F. Eifler, J. Elvin-Poole, A. E. Evrard, I. Ferrero, A. Ferté, B. Flaugher, P. Fosalba, J. Frieman, J. García-Bellido, E. Gaztanaga, T. Giannantonio, S. R. Hinton, D. L. Hollowood, K. Honscheid, B. Hoyle, D. Huterer, D. J. James, E. Krause, K. Kuehn, O. Lahav, M. Lima, M. A.G. Maia, J. L. Marshall, P. Martini, P. Melchior, F. Menanteau, J. J. Mohr, R. Morgan, J. Muir, R. L.C. Ogando, A. Palmese, F. Paz-Chinchón, A. A. Plazas, M. Rodriguez-Monroy, S. Samuroff, E. Sanchez, V. Scarpine, L. F. Secco, S. Serrano, M. Smith, M. Soares-Santos, E. Suchyta, M. E.C. Swanson, G. Tarle, D. Thomas, C. To, T. N. Varga, J. Weller, W. Wester

Research output: Contribution to journal › Review article › peer-review

105 Scopus citations

Abstract

Determining the distribution of redshifts of galaxies observed by wide-field photometric experiments like the Dark Energy Survey (DES) is an essential component to mapping the matter density field with gravitational lensing. In this work we describe the methods used to assign individual weak lensing source galaxies from the DES Year 3 Weak Lensing Source Catalogue to four tomographic bins and to estimate the redshift distributions in these bins. As the first application of these methods to data, we validate that the assumptions made apply to the DES Y3 weak lensing source galaxies and develop a full treatment of systematic uncertainties. Our method consists of combining information from three independent likelihood functions: self-organizing map p(z) (sompz), a method for constraining redshifts from galaxy photometry; clustering redshifts (WZ), constraints on redshifts from cross-correlations of galaxy density functions; and shear ratios (SRs), which provide constraints on redshifts from the ratios of the galaxy-shear correlation functions at small scales. Finally, we describe how these independent probes are combined to yield an ensemble of redshift distributions encapsulating our full uncertainty. We calibrate redshifts with combined effective uncertainties of σ〈z〉 ∼0.01 on the mean redshift in each tomographic bin.

Original language	English (US)
Pages (from-to)	4249-4277
Number of pages	29
Journal	Monthly Notices of the Royal Astronomical Society
Volume	505
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stab1515
State	Published - Aug 1 2021

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

dark energy
galaxies: distances and redshifts
gravitational lensing: weak

Access to Document

10.1093/mnras/stab1515

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Myles, J., Alarcon, A., Amon, A., Sánchez, C., Everett, S., DeRose, J., McCullough, J., Gruen, D., Bernstein, G. M., Troxel, M. A., Dodelson, S., Campos, A., MacCrann, N., Yin, B., Raveri, M., Amara, A., Becker, M. R., Choi, A., Cordero, J., ... Wester, W. (2021). Dark Energy Survey Year 3 results: Redshift calibration of the weak lensing source galaxies. Monthly Notices of the Royal Astronomical Society, 505(3), 4249-4277. https://doi.org/10.1093/mnras/stab1515

@article{4915cdc43a474c5bb14518011fe012aa,

title = "Dark Energy Survey Year 3 results: Redshift calibration of the weak lensing source galaxies",

abstract = "Determining the distribution of redshifts of galaxies observed by wide-field photometric experiments like the Dark Energy Survey (DES) is an essential component to mapping the matter density field with gravitational lensing. In this work we describe the methods used to assign individual weak lensing source galaxies from the DES Year 3 Weak Lensing Source Catalogue to four tomographic bins and to estimate the redshift distributions in these bins. As the first application of these methods to data, we validate that the assumptions made apply to the DES Y3 weak lensing source galaxies and develop a full treatment of systematic uncertainties. Our method consists of combining information from three independent likelihood functions: self-organizing map p(z) (sompz), a method for constraining redshifts from galaxy photometry; clustering redshifts (WZ), constraints on redshifts from cross-correlations of galaxy density functions; and shear ratios (SRs), which provide constraints on redshifts from the ratios of the galaxy-shear correlation functions at small scales. Finally, we describe how these independent probes are combined to yield an ensemble of redshift distributions encapsulating our full uncertainty. We calibrate redshifts with combined effective uncertainties of σ〈z〉 ∼0.01 on the mean redshift in each tomographic bin.",

keywords = "dark energy, galaxies: distances and redshifts, gravitational lensing: weak",

author = "J. Myles and A. Alarcon and A. Amon and C. S{\'a}nchez and S. Everett and J. DeRose and J. McCullough and D. Gruen and Bernstein, {G. M.} and Troxel, {M. A.} and S. Dodelson and A. Campos and N. MacCrann and B. Yin and M. Raveri and A. Amara and Becker, {M. R.} and A. Choi and J. Cordero and K. Eckert and M. Gatti and G. Giannini and J. Gschwend and Gruendl, {R. A.} and I. Harrison and Hartley, {W. G.} and Huff, {E. M.} and N. Kuropatkin and H. Lin and D. Masters and R. Miquel and J. Prat and A. Roodman and Rykoff, {E. S.} and I. Sevilla-Noarbe and E. Sheldon and Wechsler, {R. H.} and B. Yanny and Abbott, {T. M.C.} and M. Aguena and S. Allam and J. Annis and D. Bacon and E. Bertin and S. Bhargava and Bridle, {S. L.} and D. Brooks and Burke, {D. L.} and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and Castander, {F. J.} and C. Conselice and M. Costanzi and M. Crocce and {Da Costa}, {L. N.} and Pereira, {M. E.S.} and S. Desai and Diehl, {H. T.} and Eifler, {T. F.} and J. Elvin-Poole and Evrard, {A. E.} and I. Ferrero and A. Fert{\'e} and B. Flaugher and P. Fosalba and J. Frieman and J. Garc{\'i}a-Bellido and E. Gaztanaga and T. Giannantonio and Hinton, {S. R.} and Hollowood, {D. L.} and K. Honscheid and B. Hoyle and D. Huterer and James, {D. J.} and E. Krause and K. Kuehn and O. Lahav and M. Lima and Maia, {M. A.G.} and Marshall, {J. L.} and P. Martini and P. Melchior and F. Menanteau and Mohr, {J. J.} and R. Morgan and J. Muir and Ogando, {R. L.C.} and A. Palmese and F. Paz-Chinch{\'o}n and Plazas, {A. A.} and M. Rodriguez-Monroy and S. Samuroff and E. Sanchez and V. Scarpine and Secco, {L. F.} and S. Serrano and M. Smith and M. Soares-Santos and E. Suchyta and Swanson, {M. E.C.} and G. Tarle and D. Thomas and C. To and Varga, {T. N.} and J. Weller and W. Wester",

note = "Publisher Copyright: {\textcopyright} 2021 The Author(s).",

year = "2021",

month = aug,

day = "1",

doi = "10.1093/mnras/stab1515",

language = "English (US)",

volume = "505",

pages = "4249--4277",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

Myles, J, Alarcon, A, Amon, A, Sánchez, C, Everett, S, DeRose, J, McCullough, J, Gruen, D, Bernstein, GM, Troxel, MA, Dodelson, S, Campos, A, MacCrann, N, Yin, B, Raveri, M, Amara, A, Becker, MR, Choi, A, Cordero, J, Eckert, K, Gatti, M, Giannini, G, Gschwend, J, Gruendl, RA, Harrison, I, Hartley, WG, Huff, EM, Kuropatkin, N, Lin, H, Masters, D, Miquel, R, Prat, J, Roodman, A, Rykoff, ES, Sevilla-Noarbe, I, Sheldon, E, Wechsler, RH, Yanny, B, Abbott, TMC, Aguena, M, Allam, S, Annis, J, Bacon, D, Bertin, E, Bhargava, S, Bridle, SL, Brooks, D, Burke, DL, Carnero Rosell, A, Carrasco Kind, M, Carretero, J, Castander, FJ, Conselice, C, Costanzi, M, Crocce, M, Da Costa, LN, Pereira, MES, Desai, S, Diehl, HT, Eifler, TF, Elvin-Poole, J, Evrard, AE, Ferrero, I, Ferté, A, Flaugher, B, Fosalba, P, Frieman, J, García-Bellido, J, Gaztanaga, E, Giannantonio, T, Hinton, SR, Hollowood, DL, Honscheid, K, Hoyle, B, Huterer, D, James, DJ, Krause, E, Kuehn, K, Lahav, O, Lima, M, Maia, MAG, Marshall, JL, Martini, P, Melchior, P, Menanteau, F, Mohr, JJ, Morgan, R, Muir, J, Ogando, RLC, Palmese, A, Paz-Chinchón, F, Plazas, AA, Rodriguez-Monroy, M, Samuroff, S, Sanchez, E, Scarpine, V, Secco, LF, Serrano, S, Smith, M, Soares-Santos, M, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D, To, C, Varga, TN, Weller, J & Wester, W 2021, 'Dark Energy Survey Year 3 results: Redshift calibration of the weak lensing source galaxies', Monthly Notices of the Royal Astronomical Society, vol. 505, no. 3, pp. 4249-4277. https://doi.org/10.1093/mnras/stab1515

TY - JOUR

T1 - Dark Energy Survey Year 3 results

T2 - Redshift calibration of the weak lensing source galaxies

AU - Myles, J.

AU - Alarcon, A.

AU - Amon, A.

AU - Sánchez, C.

AU - Everett, S.

AU - DeRose, J.

AU - McCullough, J.

AU - Gruen, D.

AU - Bernstein, G. M.

AU - Troxel, M. A.

AU - Dodelson, S.

AU - Campos, A.

AU - MacCrann, N.

AU - Yin, B.

AU - Raveri, M.

AU - Amara, A.

AU - Becker, M. R.

AU - Choi, A.

AU - Cordero, J.

AU - Eckert, K.

AU - Gatti, M.

AU - Giannini, G.

AU - Gschwend, J.

AU - Gruendl, R. A.

AU - Harrison, I.

AU - Hartley, W. G.

AU - Huff, E. M.

AU - Kuropatkin, N.

AU - Lin, H.

AU - Masters, D.

AU - Miquel, R.

AU - Prat, J.

AU - Roodman, A.

AU - Rykoff, E. S.

AU - Sevilla-Noarbe, I.

AU - Sheldon, E.

AU - Wechsler, R. H.

AU - Yanny, B.

AU - Abbott, T. M.C.

AU - Aguena, M.

AU - Allam, S.

AU - Annis, J.

AU - Bacon, D.

AU - Bertin, E.

AU - Bhargava, S.

AU - Bridle, S. L.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Castander, F. J.

AU - Conselice, C.

AU - Costanzi, M.

AU - Crocce, M.

AU - Da Costa, L. N.

AU - Pereira, M. E.S.

AU - Desai, S.

AU - Diehl, H. T.

AU - Eifler, T. F.

AU - Elvin-Poole, J.

AU - Evrard, A. E.

AU - Ferrero, I.

AU - Ferté, A.

AU - Flaugher, B.

AU - Fosalba, P.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Gaztanaga, E.

AU - Giannantonio, T.

AU - Hinton, S. R.

AU - Hollowood, D. L.

AU - Honscheid, K.

AU - Hoyle, B.

AU - Huterer, D.

AU - James, D. J.

AU - Krause, E.

AU - Kuehn, K.

AU - Lahav, O.

AU - Lima, M.

AU - Maia, M. A.G.

AU - Marshall, J. L.

AU - Martini, P.

AU - Melchior, P.

AU - Menanteau, F.

AU - Mohr, J. J.

AU - Morgan, R.

AU - Muir, J.

AU - Ogando, R. L.C.

AU - Palmese, A.

AU - Paz-Chinchón, F.

AU - Plazas, A. A.

AU - Rodriguez-Monroy, M.

AU - Samuroff, S.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Secco, L. F.

AU - Serrano, S.

AU - Smith, M.

AU - Soares-Santos, M.

AU - Suchyta, E.

AU - Swanson, M. E.C.

AU - Tarle, G.

AU - Thomas, D.

AU - To, C.

AU - Varga, T. N.

AU - Weller, J.

AU - Wester, W.

PY - 2021/8/1

Y1 - 2021/8/1

N2 - Determining the distribution of redshifts of galaxies observed by wide-field photometric experiments like the Dark Energy Survey (DES) is an essential component to mapping the matter density field with gravitational lensing. In this work we describe the methods used to assign individual weak lensing source galaxies from the DES Year 3 Weak Lensing Source Catalogue to four tomographic bins and to estimate the redshift distributions in these bins. As the first application of these methods to data, we validate that the assumptions made apply to the DES Y3 weak lensing source galaxies and develop a full treatment of systematic uncertainties. Our method consists of combining information from three independent likelihood functions: self-organizing map p(z) (sompz), a method for constraining redshifts from galaxy photometry; clustering redshifts (WZ), constraints on redshifts from cross-correlations of galaxy density functions; and shear ratios (SRs), which provide constraints on redshifts from the ratios of the galaxy-shear correlation functions at small scales. Finally, we describe how these independent probes are combined to yield an ensemble of redshift distributions encapsulating our full uncertainty. We calibrate redshifts with combined effective uncertainties of σ〈z〉 ∼0.01 on the mean redshift in each tomographic bin.

AB - Determining the distribution of redshifts of galaxies observed by wide-field photometric experiments like the Dark Energy Survey (DES) is an essential component to mapping the matter density field with gravitational lensing. In this work we describe the methods used to assign individual weak lensing source galaxies from the DES Year 3 Weak Lensing Source Catalogue to four tomographic bins and to estimate the redshift distributions in these bins. As the first application of these methods to data, we validate that the assumptions made apply to the DES Y3 weak lensing source galaxies and develop a full treatment of systematic uncertainties. Our method consists of combining information from three independent likelihood functions: self-organizing map p(z) (sompz), a method for constraining redshifts from galaxy photometry; clustering redshifts (WZ), constraints on redshifts from cross-correlations of galaxy density functions; and shear ratios (SRs), which provide constraints on redshifts from the ratios of the galaxy-shear correlation functions at small scales. Finally, we describe how these independent probes are combined to yield an ensemble of redshift distributions encapsulating our full uncertainty. We calibrate redshifts with combined effective uncertainties of σ〈z〉 ∼0.01 on the mean redshift in each tomographic bin.

KW - dark energy

KW - galaxies: distances and redshifts

KW - gravitational lensing: weak

UR - http://www.scopus.com/inward/record.url?scp=85111192991&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85111192991&partnerID=8YFLogxK

U2 - 10.1093/mnras/stab1515

DO - 10.1093/mnras/stab1515

M3 - Review article

AN - SCOPUS:85111192991

SN - 0035-8711

VL - 505

SP - 4249

EP - 4277

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Dark Energy Survey Year 3 results: Redshift calibration of the weak lensing source galaxies

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