CosmoDC2: A Synthetic Sky Catalog for Dark Energy Science with LSST
Abstract
This paper introduces cosmoDC2, a large synthetic galaxy catalog designed to support precision dark energy science with the Large Synoptic Survey Telescope (LSST). CosmoDC2 is the starting point for the second data challenge (DC2) carried out by the LSST Dark Energy Science Collaboration (LSST DESC). The catalog is based on a trillion-particle, 4.225 Gpc^3 box cosmological N-body simulation, the `Outer Rim' run. It covers 440 deg^2 of sky area to a redshift of z=3 and is complete to a magnitude depth of 28 in the r-band. Each galaxy is characterized by a multitude of properties including stellar mass, morphology, spectral energy distributions, broadband filter magnitudes, host halo information and weak lensing shear. The size and complexity of cosmoDC2 requires an efficient catalog generation methodology; our approach is based on a new hybrid technique that combines data-driven empirical approaches with semi-analytic galaxy modeling. A wide range of observation-based validation tests has been implemented to ensure that cosmoDC2 enables the science goals of the planned LSST DESC DC2 analyses. This paper also represents the official release of the cosmoDC2 data set, including an efficient reader that facilitates interaction with the data.
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- Publication Date:
- Research Org.:
- Univ. of California, Berkeley, CA (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Argonne Leadership Computing Facility (ALCF)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); National Aeronautic and Space Administration (NASA); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Contributing Org.:
- The LSST Dark Energy Science Collaboration
- OSTI Identifier:
- 1593661
- Alternate Identifier(s):
- OSTI ID: 1599073; OSTI ID: 1634013; OSTI ID: 1755643
- Grant/Contract Number:
- SC0017860; SC0010118; SC0010008; AC02-06CH11357; HST-HF2-51441.001; NAS5-26555; AC02-05CH11231; AC02-76SF00515; PHY-1607611; AST-95-09298; AST-0071048; AST-0507428; AST-0507483; NNG04GC89G
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal. Supplement Series (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal. Supplement Series (Online); Journal Volume: 245; Journal Issue: 2; Journal ID: ISSN 1538-4365
- Publisher:
- American Astronomical Society/IOP
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; methods: numerical; large-scale structure of the universe
Citation Formats
Korytov, Danila, Hearin, Andrew, Kovacs, Eve, Larsen, Patricia, Rangel, Esteban, Hollowed, Joseph, Benson, Andrew J., Heitmann, Katrin, Mao, Yao-Yuan, Bahmanyar, Anita, Chang, Chihway, Campbell, Duncan, DeRose, Joseph, Finkel, Hal, Frontiere, Nicholas, Gawiser, Eric, Habib, Salman, Joachimi, Benjamin, Lanusse, François, Li, Nan, Mandelbaum, Rachel, Morrison, Christopher, Newman, Jeffrey A., Pope, Adrian, Rykoff, Eli, Simet, Melanie, To, Chun-Hao, Vikraman, Vinu, Wechsler, Risa H., and White, Martin. CosmoDC2: A Synthetic Sky Catalog for Dark Energy Science with LSST. United States: N. p., 2019.
Web. doi:10.3847/1538-4365/ab510c.
Korytov, Danila, Hearin, Andrew, Kovacs, Eve, Larsen, Patricia, Rangel, Esteban, Hollowed, Joseph, Benson, Andrew J., Heitmann, Katrin, Mao, Yao-Yuan, Bahmanyar, Anita, Chang, Chihway, Campbell, Duncan, DeRose, Joseph, Finkel, Hal, Frontiere, Nicholas, Gawiser, Eric, Habib, Salman, Joachimi, Benjamin, Lanusse, François, Li, Nan, Mandelbaum, Rachel, Morrison, Christopher, Newman, Jeffrey A., Pope, Adrian, Rykoff, Eli, Simet, Melanie, To, Chun-Hao, Vikraman, Vinu, Wechsler, Risa H., & White, Martin. CosmoDC2: A Synthetic Sky Catalog for Dark Energy Science with LSST. United States. doi:https://doi.org/10.3847/1538-4365/ab510c
Korytov, Danila, Hearin, Andrew, Kovacs, Eve, Larsen, Patricia, Rangel, Esteban, Hollowed, Joseph, Benson, Andrew J., Heitmann, Katrin, Mao, Yao-Yuan, Bahmanyar, Anita, Chang, Chihway, Campbell, Duncan, DeRose, Joseph, Finkel, Hal, Frontiere, Nicholas, Gawiser, Eric, Habib, Salman, Joachimi, Benjamin, Lanusse, François, Li, Nan, Mandelbaum, Rachel, Morrison, Christopher, Newman, Jeffrey A., Pope, Adrian, Rykoff, Eli, Simet, Melanie, To, Chun-Hao, Vikraman, Vinu, Wechsler, Risa H., and White, Martin. Fri .
"CosmoDC2: A Synthetic Sky Catalog for Dark Energy Science with LSST". United States. doi:https://doi.org/10.3847/1538-4365/ab510c. https://www.osti.gov/servlets/purl/1593661.
@article{osti_1593661,
title = {CosmoDC2: A Synthetic Sky Catalog for Dark Energy Science with LSST},
author = {Korytov, Danila and Hearin, Andrew and Kovacs, Eve and Larsen, Patricia and Rangel, Esteban and Hollowed, Joseph and Benson, Andrew J. and Heitmann, Katrin and Mao, Yao-Yuan and Bahmanyar, Anita and Chang, Chihway and Campbell, Duncan and DeRose, Joseph and Finkel, Hal and Frontiere, Nicholas and Gawiser, Eric and Habib, Salman and Joachimi, Benjamin and Lanusse, François and Li, Nan and Mandelbaum, Rachel and Morrison, Christopher and Newman, Jeffrey A. and Pope, Adrian and Rykoff, Eli and Simet, Melanie and To, Chun-Hao and Vikraman, Vinu and Wechsler, Risa H. and White, Martin},
abstractNote = {This paper introduces cosmoDC2, a large synthetic galaxy catalog designed to support precision dark energy science with the Large Synoptic Survey Telescope (LSST). CosmoDC2 is the starting point for the second data challenge (DC2) carried out by the LSST Dark Energy Science Collaboration (LSST DESC). The catalog is based on a trillion-particle, 4.225 Gpc^3 box cosmological N-body simulation, the `Outer Rim' run. It covers 440 deg^2 of sky area to a redshift of z=3 and is complete to a magnitude depth of 28 in the r-band. Each galaxy is characterized by a multitude of properties including stellar mass, morphology, spectral energy distributions, broadband filter magnitudes, host halo information and weak lensing shear. The size and complexity of cosmoDC2 requires an efficient catalog generation methodology; our approach is based on a new hybrid technique that combines data-driven empirical approaches with semi-analytic galaxy modeling. A wide range of observation-based validation tests has been implemented to ensure that cosmoDC2 enables the science goals of the planned LSST DESC DC2 analyses. This paper also represents the official release of the cosmoDC2 data set, including an efficient reader that facilitates interaction with the data.},
doi = {10.3847/1538-4365/ab510c},
journal = {The Astrophysical Journal. Supplement Series (Online)},
number = 2,
volume = 245,
place = {United States},
year = {2019},
month = {12}
}
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