The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: A large sample of mock galaxy catalogues

Marc Manera; Roman Scoccimarro; Will J. Percival; Lado Samushia; Cameron K. McBride; Ashley J. Ross; Ravi K. Sheth; Martin White; Beth A. Reid; Ariel G. Sánchez; Roland de Putter; Xiaoying Xu; Andreas A. Berlind; Jonathan Brinkmann; Claudia Maraston; Bob Nichol; Francesco Montesano; Nikhil Padmanabhan; Ramin A. Skibba; Rita Tojeiro; Benjamin A. Weaver

doi:10.1093/mnras/sts084

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: A large sample of mock galaxy catalogues

Marc Manera, Roman Scoccimarro, Will J. Percival, Lado Samushia, Cameron K. McBride, Ashley J. Ross, Ravi K. Sheth, Martin White, Beth A. Reid, Ariel G. Sánchez, Roland de Putter, Xiaoying Xu, Andreas A. Berlind, Jonathan Brinkmann, Claudia Maraston, Bob Nichol, Francesco Montesano, Nikhil Padmanabhan, Ramin A. Skibba, Rita TojeiroBenjamin A. Weaver

Research output: Contribution to journal › Article › peer-review

Abstract

We present a fast method for producing mock galaxy catalogues that can be used to compute the covariance of large-scale clustering measurements and test analysis techniques. Our method populates a second-order Lagrangian perturbation theory (2LPT) matter field, where we calibrate masses of dark matter haloes by detailed comparisons with N-body simulations. We demonstrate that the clustering of haloes is recovered at ~10 per cent accuracy. We populate haloes with mock galaxies using a halo occupation distribution (HOD) prescription, which has been calibrated to reproduce the clustering measurements on scales between 30 and 80 h^-1 Mpc. We compare the sample covariance matrix from our mocks with analytic estimates, and discuss differences. We have used this method to make catalogues corresponding to Data Release 9 of the Baryon Oscillation Spectroscopic Survey (BOSS), producing 600 mock catalogues of the 'CMASS' galaxy sample. These mocks have enabled detailed tests of methods and errors, and have formed an integral part of companion analyses of these galaxy data.

Original language	English (US)
Pages (from-to)	1036-1054
Number of pages	19
Journal	Monthly Notices of the Royal Astronomical Society
Volume	428
Issue number	2
DOIs	https://doi.org/10.1093/mnras/sts084
State	Published - Jan 2013

Keywords

Galaxies: haloes-large-scale structure of Universe

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/sts084

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Manera, M., Scoccimarro, R., Percival, W. J., Samushia, L., McBride, C. K., Ross, A. J., Sheth, R. K., White, M., Reid, B. A., Sánchez, A. G., de Putter, R., Xu, X., Berlind, A. A., Brinkmann, J., Maraston, C., Nichol, B., Montesano, F., Padmanabhan, N., Skibba, R. A., ... Weaver, B. A. (2013). The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: A large sample of mock galaxy catalogues. Monthly Notices of the Royal Astronomical Society, 428(2), 1036-1054. https://doi.org/10.1093/mnras/sts084

Manera, M, Scoccimarro, R, Percival, WJ, Samushia, L, McBride, CK, Ross, AJ, Sheth, RK, White, M, Reid, BA, Sánchez, AG, de Putter, R, Xu, X, Berlind, AA, Brinkmann, J, Maraston, C, Nichol, B, Montesano, F, Padmanabhan, N, Skibba, RA, Tojeiro, R & Weaver, BA 2013, 'The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: A large sample of mock galaxy catalogues', Monthly Notices of the Royal Astronomical Society, vol. 428, no. 2, pp. 1036-1054. https://doi.org/10.1093/mnras/sts084

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abstract = "We present a fast method for producing mock galaxy catalogues that can be used to compute the covariance of large-scale clustering measurements and test analysis techniques. Our method populates a second-order Lagrangian perturbation theory (2LPT) matter field, where we calibrate masses of dark matter haloes by detailed comparisons with N-body simulations. We demonstrate that the clustering of haloes is recovered at ~10 per cent accuracy. We populate haloes with mock galaxies using a halo occupation distribution (HOD) prescription, which has been calibrated to reproduce the clustering measurements on scales between 30 and 80 h-1 Mpc. We compare the sample covariance matrix from our mocks with analytic estimates, and discuss differences. We have used this method to make catalogues corresponding to Data Release 9 of the Baryon Oscillation Spectroscopic Survey (BOSS), producing 600 mock catalogues of the 'CMASS' galaxy sample. These mocks have enabled detailed tests of methods and errors, and have formed an integral part of companion analyses of these galaxy data.",

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AU - Samushia, Lado

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AU - Ross, Ashley J.

AU - Sheth, Ravi K.

AU - White, Martin

AU - Reid, Beth A.

AU - Sánchez, Ariel G.

AU - de Putter, Roland

AU - Xu, Xiaoying

AU - Berlind, Andreas A.

AU - Brinkmann, Jonathan

AU - Maraston, Claudia

AU - Nichol, Bob

AU - Montesano, Francesco

AU - Padmanabhan, Nikhil

AU - Skibba, Ramin A.

AU - Tojeiro, Rita

AU - Weaver, Benjamin A.

PY - 2013/1

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N2 - We present a fast method for producing mock galaxy catalogues that can be used to compute the covariance of large-scale clustering measurements and test analysis techniques. Our method populates a second-order Lagrangian perturbation theory (2LPT) matter field, where we calibrate masses of dark matter haloes by detailed comparisons with N-body simulations. We demonstrate that the clustering of haloes is recovered at ~10 per cent accuracy. We populate haloes with mock galaxies using a halo occupation distribution (HOD) prescription, which has been calibrated to reproduce the clustering measurements on scales between 30 and 80 h-1 Mpc. We compare the sample covariance matrix from our mocks with analytic estimates, and discuss differences. We have used this method to make catalogues corresponding to Data Release 9 of the Baryon Oscillation Spectroscopic Survey (BOSS), producing 600 mock catalogues of the 'CMASS' galaxy sample. These mocks have enabled detailed tests of methods and errors, and have formed an integral part of companion analyses of these galaxy data.

AB - We present a fast method for producing mock galaxy catalogues that can be used to compute the covariance of large-scale clustering measurements and test analysis techniques. Our method populates a second-order Lagrangian perturbation theory (2LPT) matter field, where we calibrate masses of dark matter haloes by detailed comparisons with N-body simulations. We demonstrate that the clustering of haloes is recovered at ~10 per cent accuracy. We populate haloes with mock galaxies using a halo occupation distribution (HOD) prescription, which has been calibrated to reproduce the clustering measurements on scales between 30 and 80 h-1 Mpc. We compare the sample covariance matrix from our mocks with analytic estimates, and discuss differences. We have used this method to make catalogues corresponding to Data Release 9 of the Baryon Oscillation Spectroscopic Survey (BOSS), producing 600 mock catalogues of the 'CMASS' galaxy sample. These mocks have enabled detailed tests of methods and errors, and have formed an integral part of companion analyses of these galaxy data.

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The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: A large sample of mock galaxy catalogues

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Keywords

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