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Galaxy–galaxy lensing with the DES-CMASS catalogue: measurement and constraints on the galaxy-matter cross-correlation

Galaxy–galaxy lensing with the DES-CMASS catalogue: measurement and constraints on the galaxy-matter cross-correlation
Galaxy–galaxy lensing with the DES-CMASS catalogue: measurement and constraints on the galaxy-matter cross-correlation
The DMASS sample is a photometric sample from the DES Year 1 data set designed to replicate the properties of the CMASS sample from BOSS, in support of a joint analysis of DES and BOSS beyond the small overlapping area. In this paper, we present the measurement of galaxy–galaxy lensing using the DMASS sample as gravitational lenses in the DES Y1 imaging data. We test a number of potential systematics that can bias the galaxy–galaxy lensing signal, including those from shear estimation, photometric redshifts, and observing conditions. After careful systematic tests, we obtain a highly significant detection of the galaxy–galaxy lensing signal, with total S/N = 25.7. With the measured signal, we assess the feasibility of using DMASS as gravitational lenses equivalent to CMASS, by estimating the galaxy-matter cross-correlation coefficient rcc. By jointly fitting the galaxy–galaxy lensing measurement with the galaxy clustering measurement from CMASS, we obtain rcc=1.09+0.12−0.11 for the scale cut of 4h−1Mpc and rcc=1.06+0.13−0.12 for 12h−1Mpc in fixed cosmology. By adding the angular galaxy clustering of DMASS, we obtain rcc = 1.06 ± 0.10 for the scale cut of 4h−1Mpc and rcc = 1.03 ± 0.11 for 12h−1Mpc⁠. The resulting values of rcc indicate that the lensing signal of DMASS is statistically consistent with the one that would have been measured if CMASS had populated the DES region within the given statistical uncertainty. The measurement of galaxy–galaxy lensing presented in this paper will serve as part of the data vector for the forthcoming cosmology analysis in preparation.
1365-2966
2033-2047
Lee, S
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Troxel, M A
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Choi, A
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Elvin-poole, J
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Hirata, C
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Honscheid, K
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Huff, E M
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Maccrann, N
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Ross, A J
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Eifler, T F
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Chang, C
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Miquel, R
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Omori, Y
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Prat, J
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Bernstein, G M
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Davis, C
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Derose, J
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Samuroff, S
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Sánchez, C
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Vielzeuf, P
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Zuntz, J
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Aguena, M
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Allam, S
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Amon, A
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Bertin, E
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Brooks, D
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Burke, D L
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Carnero rosell, A
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Carrasco kind, M
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Carretero, J
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Castander, F J
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Cawthon, R
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Conselice, C
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Costanzi, M
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Da costa, L N
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Pereira, M E S
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De vicente, J
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Desai, S
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Diehl, H T
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Dietrich, J P
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Doel, P
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Everett, S
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Evrard, A E
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Ferrero, I
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Flaugher, B
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Fosalba, P
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Frieman, J.
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Smith, M
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DES Collaboration
Lee, S
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Troxel, M A
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Choi, A
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Elvin-poole, J
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Hirata, C
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Honscheid, K
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Huff, E M
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Maccrann, N
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Ross, A J
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Eifler, T F
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Chang, C
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Miquel, R
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Omori, Y
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Prat, J
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Bernstein, G M
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Davis, C
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Derose, J
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Gatti, M
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Rau, M M
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Samuroff, S
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Sánchez, C
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Vielzeuf, P
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Zuntz, J
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Aguena, M
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Allam, S
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Amon, A
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Andrade-oliveira, F
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Bertin, E
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Brooks, D
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Burke, D L
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Carnero rosell, A
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Carrasco kind, M
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Carretero, J
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Castander, F J
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Cawthon, R
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Conselice, C
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Costanzi, M
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Da costa, L N
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Pereira, M E S
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De vicente, J
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Desai, S
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Diehl, H T
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Dietrich, J P
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Doel, P
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Everett, S
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Evrard, A E
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Ferrero, I
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Flaugher, B
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Fosalba, P
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Frieman, J.
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Smith, M
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Lee, S, Troxel, M A, Choi, A, Elvin-poole, J, Hirata, C, Honscheid, K, Huff, E M, Maccrann, N, Ross, A J, Eifler, T F, Chang, C, Miquel, R, Omori, Y, Prat, J, Bernstein, G M, Davis, C, Derose, J, Gatti, M, Rau, M M, Samuroff, S, Sánchez, C, Vielzeuf, P, Zuntz, J, Aguena, M, Allam, S, Amon, A, Andrade-oliveira, F, Bertin, E, Brooks, D, Burke, D L, Carnero rosell, A, Carrasco kind, M, Carretero, J, Castander, F J, Cawthon, R, Conselice, C, Costanzi, M, Da costa, L N, Pereira, M E S, De vicente, J, Desai, S, Diehl, H T, Dietrich, J P, Doel, P, Everett, S, Evrard, A E, Ferrero, I, Flaugher, B, Fosalba, P, Frieman, J. and Smith, M , DES Collaboration (2021) Galaxy–galaxy lensing with the DES-CMASS catalogue: measurement and constraints on the galaxy-matter cross-correlation. Monthly Notices of the Royal Astronomical Society, 509 (2), 2033-2047. (doi:10.1093/mnras/stab3028).

Record type: Article

Abstract

The DMASS sample is a photometric sample from the DES Year 1 data set designed to replicate the properties of the CMASS sample from BOSS, in support of a joint analysis of DES and BOSS beyond the small overlapping area. In this paper, we present the measurement of galaxy–galaxy lensing using the DMASS sample as gravitational lenses in the DES Y1 imaging data. We test a number of potential systematics that can bias the galaxy–galaxy lensing signal, including those from shear estimation, photometric redshifts, and observing conditions. After careful systematic tests, we obtain a highly significant detection of the galaxy–galaxy lensing signal, with total S/N = 25.7. With the measured signal, we assess the feasibility of using DMASS as gravitational lenses equivalent to CMASS, by estimating the galaxy-matter cross-correlation coefficient rcc. By jointly fitting the galaxy–galaxy lensing measurement with the galaxy clustering measurement from CMASS, we obtain rcc=1.09+0.12−0.11 for the scale cut of 4h−1Mpc and rcc=1.06+0.13−0.12 for 12h−1Mpc in fixed cosmology. By adding the angular galaxy clustering of DMASS, we obtain rcc = 1.06 ± 0.10 for the scale cut of 4h−1Mpc and rcc = 1.03 ± 0.11 for 12h−1Mpc⁠. The resulting values of rcc indicate that the lensing signal of DMASS is statistically consistent with the one that would have been measured if CMASS had populated the DES region within the given statistical uncertainty. The measurement of galaxy–galaxy lensing presented in this paper will serve as part of the data vector for the forthcoming cosmology analysis in preparation.

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Accepted/In Press date: 12 October 2021
Published date: 28 October 2021
Additional Information: This article has been accepted for publication in [Journal Title] ©:2021 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

Identifiers

Local EPrints ID: 455951
URI: http://eprints.soton.ac.uk/id/eprint/455951
DOI: doi:10.1093/mnras/stab3028
ISSN: 1365-2966
PURE UUID: 01684088-40de-44a2-8d91-aa71b7046587
ORCID for M Smith: ORCID iD orcid.org/0000-0002-3321-1432

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Date deposited: 11 Apr 2022 16:36
Last modified: 17 Mar 2024 03:36

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Contributors

Author: S Lee
Author: M A Troxel
Author: A Choi
Author: J Elvin-poole
Author: C Hirata
Author: K Honscheid
Author: E M Huff
Author: N Maccrann
Author: A J Ross
Author: T F Eifler
Author: C Chang
Author: R Miquel
Author: Y Omori
Author: J Prat
Author: G M Bernstein
Author: C Davis
Author: J Derose
Author: M Gatti
Author: M M Rau
Author: S Samuroff
Author: C Sánchez
Author: P Vielzeuf
Author: J Zuntz
Author: M Aguena
Author: S Allam
Author: A Amon
Author: F Andrade-oliveira
Author: E Bertin
Author: D Brooks
Author: D L Burke
Author: A Carnero rosell
Author: M Carrasco kind
Author: J Carretero
Author: F J Castander
Author: R Cawthon
Author: C Conselice
Author: M Costanzi
Author: L N Da costa
Author: M E S Pereira
Author: J De vicente
Author: S Desai
Author: H T Diehl
Author: J P Dietrich
Author: P Doel
Author: S Everett
Author: A E Evrard
Author: I Ferrero
Author: B Flaugher
Author: P Fosalba
Author: J. Frieman
Author: M Smith ORCID iD
Corporate Author: DES Collaboration

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