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The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity

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The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity. / Ross, Ashley; Percival, Will; Carnero, A.; Zhao, Gong-bo; Manera, Marc; Raccanelli, Alvise; Aubourg, E.; Bizyaev, D.; Brewington, H.; Brinkmann, J.; Brownstein, J.; Cuesta, A.; da Costa, L.; Eisenstein, D.; Ebelke, G.; Guo, H.; Hamilton, J-C.; Magana, M.; Malanushenko, E.; Malanushenko, V.; Maraston, Claudia; Montesano, F.; Nichol, Bob; Oravetz, D.; Pan, K.; Prada, F.; Sanchez, A.; Samushia, Lado; Schlegel, D.; Schneider, D.; Seo, H.; Sheldon, A.; Simmons, A.; Snedden, S.; Swanson, M.; Thomas, Daniel; Tinker, J.; Tojeiro, Rita; Zehavi, I.

In: Monthly Notices of the Royal Astronomical Society, Vol. 428, No. 2, 2013, p. 1116-1127.

Research output: Contribution to journalArticle

Harvard

Ross, A, Percival, W, Carnero, A, Zhao, G, Manera, M, Raccanelli, A, Aubourg, E, Bizyaev, D, Brewington, H, Brinkmann, J, Brownstein, J, Cuesta, A, da Costa, L, Eisenstein, D, Ebelke, G, Guo, H, Hamilton, J-C, Magana, M, Malanushenko, E, Malanushenko, V, Maraston, C, Montesano, F, Nichol, B, Oravetz, D, Pan, K, Prada, F, Sanchez, A, Samushia, L, Schlegel, D, Schneider, D, Seo, H, Sheldon, A, Simmons, A, Snedden, S, Swanson, M, Thomas, D, Tinker, J, Tojeiro, R & Zehavi, I 2013, 'The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity', Monthly Notices of the Royal Astronomical Society, vol. 428, no. 2, pp. 1116-1127. https://doi.org/10.1093/mnras/sts094

APA

Ross, A., Percival, W., Carnero, A., Zhao, G., Manera, M., Raccanelli, A., ... Zehavi, I. (2013). The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity. Monthly Notices of the Royal Astronomical Society, 428(2), 1116-1127. https://doi.org/10.1093/mnras/sts094

Vancouver

Ross A, Percival W, Carnero A, Zhao G, Manera M, Raccanelli A et al. The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity. Monthly Notices of the Royal Astronomical Society. 2013;428(2):1116-1127. https://doi.org/10.1093/mnras/sts094

Author

Ross, Ashley ; Percival, Will ; Carnero, A. ; Zhao, Gong-bo ; Manera, Marc ; Raccanelli, Alvise ; Aubourg, E. ; Bizyaev, D. ; Brewington, H. ; Brinkmann, J. ; Brownstein, J. ; Cuesta, A. ; da Costa, L. ; Eisenstein, D. ; Ebelke, G. ; Guo, H. ; Hamilton, J-C. ; Magana, M. ; Malanushenko, E. ; Malanushenko, V. ; Maraston, Claudia ; Montesano, F. ; Nichol, Bob ; Oravetz, D. ; Pan, K. ; Prada, F. ; Sanchez, A. ; Samushia, Lado ; Schlegel, D. ; Schneider, D. ; Seo, H. ; Sheldon, A. ; Simmons, A. ; Snedden, S. ; Swanson, M. ; Thomas, Daniel ; Tinker, J. ; Tojeiro, Rita ; Zehavi, I. / The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity. In: Monthly Notices of the Royal Astronomical Society. 2013 ; Vol. 428, No. 2. pp. 1116-1127.

Bibtex

@article{2729119103ff4537a4343fca96123541,
title = "The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity",
abstract = "We analyze the density field of 264,283 galaxies observed by the Sloan Digital Sky Survey (SDSS)-III Baryon Oscillation Spectroscopic Survey (BOSS) and included in the SDSS data release nine (DR9). In total, the SDSS DR9 BOSS data includes spectroscopic redshifts for over 400,000 galaxies spread over a footprint of more than 3,000 deg^2. We measure the power spectrum of these galaxies with redshifts 0.43 < z < 0.7 in order to constrain the amount of local non-Gaussianity, f_NL,local, in the primordial density field, paying particular attention to the impact of systematic uncertainties. The BOSS galaxy density field is systematically affected by the local stellar density and this influences the ability to accurately measure f_NL,local. In the absence of any correction, we find (erroneously) that the probability that f_NL,local is greater than zero, P(f_NL,local >0), is 99.5{\%}. After quantifying and correcting for the systematic bias and including the added uncertainty, we find -45 < f_NL,local < 195 at 95{\%} confidence, and P(f_NL,local >0) = 91.0{\%}. A more conservative approach assumes that we have only learned the k-dependence of the systematic bias and allows any amplitude for the systematic correction; we find that the systematic effect is not fully degenerate with that of f_NL,local, and we determine that -82 < f_NL,local < 178 (at 95{\%} confidence) and P(f_NL,local >0) = 68{\%}. This analysis demonstrates the importance of accounting for the impact of Galactic foregrounds on f_NL,local measurements. We outline the methods that account for these systematic biases and uncertainties. We expect our methods to yield robust constraints on f_NL,local for both our own and future large-scale-structure investigations.",
author = "Ashley Ross and Will Percival and A. Carnero and Gong-bo Zhao and Marc Manera and Alvise Raccanelli and E. Aubourg and D. Bizyaev and H. Brewington and J. Brinkmann and J. Brownstein and A. Cuesta and {da Costa}, L. and D. Eisenstein and G. Ebelke and H. Guo and J-C. Hamilton and M. Magana and E. Malanushenko and V. Malanushenko and Claudia Maraston and F. Montesano and Bob Nichol and D. Oravetz and K. Pan and F. Prada and A. Sanchez and Lado Samushia and D. Schlegel and D. Schneider and H. Seo and A. Sheldon and A. Simmons and S. Snedden and M. Swanson and Daniel Thomas and J. Tinker and Rita Tojeiro and I. Zehavi",
year = "2013",
doi = "10.1093/mnras/sts094",
language = "English",
volume = "428",
pages = "1116--1127",
journal = "MNRAS",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - The clustering of galaxies in the SDSS-III DR9 Baryon Oscillation Spectroscopic Survey: constraints on primordial non-Gaussianity

AU - Ross, Ashley

AU - Percival, Will

AU - Carnero, A.

AU - Zhao, Gong-bo

AU - Manera, Marc

AU - Raccanelli, Alvise

AU - Aubourg, E.

AU - Bizyaev, D.

AU - Brewington, H.

AU - Brinkmann, J.

AU - Brownstein, J.

AU - Cuesta, A.

AU - da Costa, L.

AU - Eisenstein, D.

AU - Ebelke, G.

AU - Guo, H.

AU - Hamilton, J-C.

AU - Magana, M.

AU - Malanushenko, E.

AU - Malanushenko, V.

AU - Maraston, Claudia

AU - Montesano, F.

AU - Nichol, Bob

AU - Oravetz, D.

AU - Pan, K.

AU - Prada, F.

AU - Sanchez, A.

AU - Samushia, Lado

AU - Schlegel, D.

AU - Schneider, D.

AU - Seo, H.

AU - Sheldon, A.

AU - Simmons, A.

AU - Snedden, S.

AU - Swanson, M.

AU - Thomas, Daniel

AU - Tinker, J.

AU - Tojeiro, Rita

AU - Zehavi, I.

PY - 2013

Y1 - 2013

N2 - We analyze the density field of 264,283 galaxies observed by the Sloan Digital Sky Survey (SDSS)-III Baryon Oscillation Spectroscopic Survey (BOSS) and included in the SDSS data release nine (DR9). In total, the SDSS DR9 BOSS data includes spectroscopic redshifts for over 400,000 galaxies spread over a footprint of more than 3,000 deg^2. We measure the power spectrum of these galaxies with redshifts 0.43 < z < 0.7 in order to constrain the amount of local non-Gaussianity, f_NL,local, in the primordial density field, paying particular attention to the impact of systematic uncertainties. The BOSS galaxy density field is systematically affected by the local stellar density and this influences the ability to accurately measure f_NL,local. In the absence of any correction, we find (erroneously) that the probability that f_NL,local is greater than zero, P(f_NL,local >0), is 99.5%. After quantifying and correcting for the systematic bias and including the added uncertainty, we find -45 < f_NL,local < 195 at 95% confidence, and P(f_NL,local >0) = 91.0%. A more conservative approach assumes that we have only learned the k-dependence of the systematic bias and allows any amplitude for the systematic correction; we find that the systematic effect is not fully degenerate with that of f_NL,local, and we determine that -82 < f_NL,local < 178 (at 95% confidence) and P(f_NL,local >0) = 68%. This analysis demonstrates the importance of accounting for the impact of Galactic foregrounds on f_NL,local measurements. We outline the methods that account for these systematic biases and uncertainties. We expect our methods to yield robust constraints on f_NL,local for both our own and future large-scale-structure investigations.

AB - We analyze the density field of 264,283 galaxies observed by the Sloan Digital Sky Survey (SDSS)-III Baryon Oscillation Spectroscopic Survey (BOSS) and included in the SDSS data release nine (DR9). In total, the SDSS DR9 BOSS data includes spectroscopic redshifts for over 400,000 galaxies spread over a footprint of more than 3,000 deg^2. We measure the power spectrum of these galaxies with redshifts 0.43 < z < 0.7 in order to constrain the amount of local non-Gaussianity, f_NL,local, in the primordial density field, paying particular attention to the impact of systematic uncertainties. The BOSS galaxy density field is systematically affected by the local stellar density and this influences the ability to accurately measure f_NL,local. In the absence of any correction, we find (erroneously) that the probability that f_NL,local is greater than zero, P(f_NL,local >0), is 99.5%. After quantifying and correcting for the systematic bias and including the added uncertainty, we find -45 < f_NL,local < 195 at 95% confidence, and P(f_NL,local >0) = 91.0%. A more conservative approach assumes that we have only learned the k-dependence of the systematic bias and allows any amplitude for the systematic correction; we find that the systematic effect is not fully degenerate with that of f_NL,local, and we determine that -82 < f_NL,local < 178 (at 95% confidence) and P(f_NL,local >0) = 68%. This analysis demonstrates the importance of accounting for the impact of Galactic foregrounds on f_NL,local measurements. We outline the methods that account for these systematic biases and uncertainties. We expect our methods to yield robust constraints on f_NL,local for both our own and future large-scale-structure investigations.

U2 - 10.1093/mnras/sts094

DO - 10.1093/mnras/sts094

M3 - Article

VL - 428

SP - 1116

EP - 1127

JO - MNRAS

JF - MNRAS

SN - 0035-8711

IS - 2

ER -

ID: 250700