Preliminary clustering properties of the DESI BGS bright targets using DR9 Legacy Imaging Surveys
Abstract
We characterize the selection cuts and clustering properties of a magnitude-limited sample of bright galaxies that is part of the Bright Galaxy Survey (BGS) of the Dark Energy Spectroscopic Instrument (DESI) using the ninth data release of the Legacy Imaging Surveys (DR9). We describe changes in the DR9 selection compared to the DR8 one and we also compare the DR9 selection in three distinct regions: BASS/MzLS in the north Galactic Cap (NGC), DECaLS in the NGC, and DECaLS in the south Galactic Cap (SGC). We investigate the systematics associated with the selection and assess its completeness by matching the BGS targets with the Galaxy and Mass Assembly (GAMA) survey. We measure the angular clustering for the overall bright sample (rmag ≤ 19.5) and as function of apparent magnitude and colour. This enables to determine the clustering strength r0 and slope γ by fitting a power-law model that can be used to generate accurate mock catalogues for this tracer. We use a counts-in-cells technique to explore higher order statistics and cross-correlations with external spectroscopic data sets in order to check the evolution of the clustering with redshift and the redshift distribution of the BGS targets using clustering redshifts. While this workmore »
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); UK Science Technology Facilities Council; National Science Foundation (NSF); Mexican National Council of Science and Technology (CONACyT); Marie Sklodowska-Curie
- OSTI Identifier:
- 1831326
- Alternate Identifier(s):
- OSTI ID: 1859717; OSTI ID: 1973751
- Grant/Contract Number:
- AC02-05CH1123; DESC0020086; AC02-05CH11231; SC0020086; AST-1616414; ST/P000541/1; ST/T000244/1; SC0019193; 297228/440775; 734374
- Resource Type:
- Published Article
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 509 Journal Issue: 1; Journal ID: ISSN 0035-8711
- Publisher:
- Oxford University Press
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; cosmology; observations; distances and redshifts; large-scale structures; dark energy; astronomical data bases: miscellaneous; Universe
Citation Formats
Zarrouk, Pauline, Ruiz-Macias, Omar, Cole, Shaun, Norberg, Peder, Baugh, Carlton, Brooks, David, Gaztañaga, Enrique, Kitanidis, Ellie, Kehoe, Robert, Landriau, Martin, Moustakas, John, Prada, Francisco, and Tarlé, Gregory. Preliminary clustering properties of the DESI BGS bright targets using DR9 Legacy Imaging Surveys. United Kingdom: N. p., 2021.
Web. doi:10.1093/mnras/stab2814.
Zarrouk, Pauline, Ruiz-Macias, Omar, Cole, Shaun, Norberg, Peder, Baugh, Carlton, Brooks, David, Gaztañaga, Enrique, Kitanidis, Ellie, Kehoe, Robert, Landriau, Martin, Moustakas, John, Prada, Francisco, & Tarlé, Gregory. Preliminary clustering properties of the DESI BGS bright targets using DR9 Legacy Imaging Surveys. United Kingdom. https://doi.org/10.1093/mnras/stab2814
Zarrouk, Pauline, Ruiz-Macias, Omar, Cole, Shaun, Norberg, Peder, Baugh, Carlton, Brooks, David, Gaztañaga, Enrique, Kitanidis, Ellie, Kehoe, Robert, Landriau, Martin, Moustakas, John, Prada, Francisco, and Tarlé, Gregory. Sat .
"Preliminary clustering properties of the DESI BGS bright targets using DR9 Legacy Imaging Surveys". United Kingdom. https://doi.org/10.1093/mnras/stab2814.
@article{osti_1831326,
title = {Preliminary clustering properties of the DESI BGS bright targets using DR9 Legacy Imaging Surveys},
author = {Zarrouk, Pauline and Ruiz-Macias, Omar and Cole, Shaun and Norberg, Peder and Baugh, Carlton and Brooks, David and Gaztañaga, Enrique and Kitanidis, Ellie and Kehoe, Robert and Landriau, Martin and Moustakas, John and Prada, Francisco and Tarlé, Gregory},
abstractNote = {We characterize the selection cuts and clustering properties of a magnitude-limited sample of bright galaxies that is part of the Bright Galaxy Survey (BGS) of the Dark Energy Spectroscopic Instrument (DESI) using the ninth data release of the Legacy Imaging Surveys (DR9). We describe changes in the DR9 selection compared to the DR8 one and we also compare the DR9 selection in three distinct regions: BASS/MzLS in the north Galactic Cap (NGC), DECaLS in the NGC, and DECaLS in the south Galactic Cap (SGC). We investigate the systematics associated with the selection and assess its completeness by matching the BGS targets with the Galaxy and Mass Assembly (GAMA) survey. We measure the angular clustering for the overall bright sample (rmag ≤ 19.5) and as function of apparent magnitude and colour. This enables to determine the clustering strength r0 and slope γ by fitting a power-law model that can be used to generate accurate mock catalogues for this tracer. We use a counts-in-cells technique to explore higher order statistics and cross-correlations with external spectroscopic data sets in order to check the evolution of the clustering with redshift and the redshift distribution of the BGS targets using clustering redshifts. While this work validates the properties of the BGS bright targets, the final target selection pipeline and clustering properties of the entire DESI BGS will be fully characterized and validated with the spectroscopic data of Survey Validation.},
doi = {10.1093/mnras/stab2814},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 1,
volume = 509,
place = {United Kingdom},
year = {Sat Oct 02 00:00:00 EDT 2021},
month = {Sat Oct 02 00:00:00 EDT 2021}
}
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