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Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations

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Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations. / Dark Energy Survey Collaboration ; Thomas, Daniel.

In: Monthly Notices of the Royal Astronomical Society: Letters, Vol. 481, No. 2, sty2424, 01.12.2018, p. 2427-2443.

Research output: Contribution to journalArticle

Harvard

Dark Energy Survey Collaboration & Thomas, D 2018, 'Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations', Monthly Notices of the Royal Astronomical Society: Letters, vol. 481, no. 2, sty2424, pp. 2427-2443. https://doi.org/10.1093/mnras/sty2424

APA

Dark Energy Survey Collaboration, & Thomas, D. (2018). Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations. Monthly Notices of the Royal Astronomical Society: Letters, 481(2), 2427-2443. [sty2424]. https://doi.org/10.1093/mnras/sty2424

Vancouver

Dark Energy Survey Collaboration, Thomas D. Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations. Monthly Notices of the Royal Astronomical Society: Letters. 2018 Dec 1;481(2):2427-2443. sty2424. https://doi.org/10.1093/mnras/sty2424

Author

Dark Energy Survey Collaboration ; Thomas, Daniel. / Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations. In: Monthly Notices of the Royal Astronomical Society: Letters. 2018 ; Vol. 481, No. 2. pp. 2427-2443.

Bibtex

@article{edb9baa026e74d9abf4d9a83cac3dbb4,
title = "Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations",
abstract = "We present calibrations of the redshift distributions of redMaGiC galaxies in the Dark Energy Survey Year 1 (DES Y1) and Sloan Digital Sky Survey (SDSS) DR8 data. These results determine the priors of the redshift distribution of redMaGiC galaxies, which were used for galaxy clustering measurements and as lenses for galaxy–galaxy lensing measurements in DES Y1 cosmological analyses. We empirically determine the bias in redMaGiC photometric redshift estimates using angular cross-correlations with Baryon Oscillation Spectroscopic Survey (BOSS) galaxies. For DES, we calibrate a single-parameter redshift bias in three photometric redshift bins: z ∈ [0.15, 0.3], [0.3,0.45], and [0.45,0.6]. Our best-fit results in each bin give photometric redshift biases of |Δz| < 0.01. To further test the redMaGiC algorithm, we apply our calibration procedure to SDSS redMaGiC galaxies, where the statistical precision of the cross-correlation measurement is much higher due to a greater overlap with BOSS galaxies. For SDSS, we also find best-fit results of |Δz| < 0.01. We compare our results to other analyses of redMaGiC photometric redshifts.",
keywords = "RCUK, STFC, AST-1536171, AST-1138766, uploaded-in-3-months-elsewhere",
author = "{Dark Energy Survey Collaboration} and R. Cawthon and Clare Davis and M. Gatti and P. Vielzeuf and Jack Elvin-Poole and Eduardo Rozo and Frieman, {Joshua A.} and Rykoff, {Eli S.} and A. Alarcon and Bernstein, {Gary M.} and Christopher Bonnett and Rosell, {Aurelio Carnero} and Castander, {Francisco Javier} and C. Chang and Costa, {L. N. da} and Vicente, {Juan de} and {De Rose}, J and Alex Drlica-Wagner and Enrique Gaztanaga and T. Giannantonio and Daniel Gruen and Julia Gschwend and Hartley, {William G.} and B. Hoyle and H. Lin and Maia, {Marcio Antonio Geimba} and Ramon Miquel and Ogando, {Ricardo L. C.} and Rau, {M. M.} and Aaron Roodman and Ross, {A. J.} and Emmanuel Bertin and David Brooks and Burke, {David L.} and {Carrasco Kind}, Matias and Jorge Carretero and Cunha, {Carlos E.} and D'Andrea, {C. B.} and DePoy, {D. L.} and S. Desai and Diehl, {H. Thomas} and Peter Doel and Eifler, {Tim F.} and Evrard, {A. E.} and B. Flaugher and Pablo Fosalba and Juan Garc{\'i}a-Bellido and Gerdes, {David W.} and Gruendl, {Robert A.} and G. Gutierrez and Hollowood, {D. L.} and Klaus Honscheid and Derek James and Jeltema, {Tesla E.} and Elisabeth Krause and Kyler Kuehn and S. Kuhlmann and Nikolay Kuropatkin and Ofer Lahav and M. Lima and Marshall, {J. L.} and Paul Martini and Felipe Menanteau and Miller, {Christopher J.} and Plazas, {Andres A.} and Eusebio Sanchez and Vic Scarpine and Schindler, {Rafe H.} and Michael Schubnell and Malcolm Smith and Smith, {Robert Chris} and Marcelle Soares-Santos and Flavia Sobreira and Eric Suchyta and Swanson, {Molly E. C.} and Gregory Tarle and Daniel Thomas and Tucker, {Douglas L.} and Walker, {Alistair R.}",
year = "2018",
month = dec,
day = "1",
doi = "10.1093/mnras/sty2424",
language = "English",
volume = "481",
pages = "2427--2443",
journal = "Monthly Notices of the Royal Astronomical Society: Letters",
issn = "1745-3925",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - Dark Energy Survey Year 1 Results: calibration of redMaGiC redshift distributions in DES and SDSS from cross-correlations

AU - Dark Energy Survey Collaboration

AU - Cawthon, R.

AU - Davis, Clare

AU - Gatti, M.

AU - Vielzeuf, P.

AU - Elvin-Poole, Jack

AU - Rozo, Eduardo

AU - Frieman, Joshua A.

AU - Rykoff, Eli S.

AU - Alarcon, A.

AU - Bernstein, Gary M.

AU - Bonnett, Christopher

AU - Rosell, Aurelio Carnero

AU - Castander, Francisco Javier

AU - Chang, C.

AU - Costa, L. N. da

AU - Vicente, Juan de

AU - De Rose, J

AU - Drlica-Wagner, Alex

AU - Gaztanaga, Enrique

AU - Giannantonio, T.

AU - Gruen, Daniel

AU - Gschwend, Julia

AU - Hartley, William G.

AU - Hoyle, B.

AU - Lin, H.

AU - Maia, Marcio Antonio Geimba

AU - Miquel, Ramon

AU - Ogando, Ricardo L. C.

AU - Rau, M. M.

AU - Roodman, Aaron

AU - Ross, A. J.

AU - Bertin, Emmanuel

AU - Brooks, David

AU - Burke, David L.

AU - Carrasco Kind, Matias

AU - Carretero, Jorge

AU - Cunha, Carlos E.

AU - D'Andrea, C. B.

AU - DePoy, D. L.

AU - Desai, S.

AU - Diehl, H. Thomas

AU - Doel, Peter

AU - Eifler, Tim F.

AU - Evrard, A. E.

AU - Flaugher, B.

AU - Fosalba, Pablo

AU - García-Bellido, Juan

AU - Gerdes, David W.

AU - Gruendl, Robert A.

AU - Gutierrez, G.

AU - Hollowood, D. L.

AU - Honscheid, Klaus

AU - James, Derek

AU - Jeltema, Tesla E.

AU - Krause, Elisabeth

AU - Kuehn, Kyler

AU - Kuhlmann, S.

AU - Kuropatkin, Nikolay

AU - Lahav, Ofer

AU - Lima, M.

AU - Marshall, J. L.

AU - Martini, Paul

AU - Menanteau, Felipe

AU - Miller, Christopher J.

AU - Plazas, Andres A.

AU - Sanchez, Eusebio

AU - Scarpine, Vic

AU - Schindler, Rafe H.

AU - Schubnell, Michael

AU - Smith, Malcolm

AU - Smith, Robert Chris

AU - Soares-Santos, Marcelle

AU - Sobreira, Flavia

AU - Suchyta, Eric

AU - Swanson, Molly E. C.

AU - Tarle, Gregory

AU - Thomas, Daniel

AU - Tucker, Douglas L.

AU - Walker, Alistair R.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - We present calibrations of the redshift distributions of redMaGiC galaxies in the Dark Energy Survey Year 1 (DES Y1) and Sloan Digital Sky Survey (SDSS) DR8 data. These results determine the priors of the redshift distribution of redMaGiC galaxies, which were used for galaxy clustering measurements and as lenses for galaxy–galaxy lensing measurements in DES Y1 cosmological analyses. We empirically determine the bias in redMaGiC photometric redshift estimates using angular cross-correlations with Baryon Oscillation Spectroscopic Survey (BOSS) galaxies. For DES, we calibrate a single-parameter redshift bias in three photometric redshift bins: z ∈ [0.15, 0.3], [0.3,0.45], and [0.45,0.6]. Our best-fit results in each bin give photometric redshift biases of |Δz| < 0.01. To further test the redMaGiC algorithm, we apply our calibration procedure to SDSS redMaGiC galaxies, where the statistical precision of the cross-correlation measurement is much higher due to a greater overlap with BOSS galaxies. For SDSS, we also find best-fit results of |Δz| < 0.01. We compare our results to other analyses of redMaGiC photometric redshifts.

AB - We present calibrations of the redshift distributions of redMaGiC galaxies in the Dark Energy Survey Year 1 (DES Y1) and Sloan Digital Sky Survey (SDSS) DR8 data. These results determine the priors of the redshift distribution of redMaGiC galaxies, which were used for galaxy clustering measurements and as lenses for galaxy–galaxy lensing measurements in DES Y1 cosmological analyses. We empirically determine the bias in redMaGiC photometric redshift estimates using angular cross-correlations with Baryon Oscillation Spectroscopic Survey (BOSS) galaxies. For DES, we calibrate a single-parameter redshift bias in three photometric redshift bins: z ∈ [0.15, 0.3], [0.3,0.45], and [0.45,0.6]. Our best-fit results in each bin give photometric redshift biases of |Δz| < 0.01. To further test the redMaGiC algorithm, we apply our calibration procedure to SDSS redMaGiC galaxies, where the statistical precision of the cross-correlation measurement is much higher due to a greater overlap with BOSS galaxies. For SDSS, we also find best-fit results of |Δz| < 0.01. We compare our results to other analyses of redMaGiC photometric redshifts.

KW - RCUK

KW - STFC

KW - AST-1536171

KW - AST-1138766

KW - uploaded-in-3-months-elsewhere

UR - http://discovery.ucl.ac.uk/10060856/

U2 - 10.1093/mnras/sty2424

DO - 10.1093/mnras/sty2424

M3 - Article

VL - 481

SP - 2427

EP - 2443

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

SN - 1745-3925

IS - 2

M1 - sty2424

ER -

ID: 13379087