AbacusSummit Halo Light Cone Catalogs

10.13139/OLCF/1825069

This is a set of halo light cone catalogs from the AbacusSummit suite of cosmological N-body simulations (abacussummit.readthedocs.io/).  They are a value-added data product provided by post-processing the simulation output. The main application of the halo light cone catalogs is the construction of realistic mock galaxy catalogues and weak lensing maps on the sky. The algorithm (described in Hadzhiyska et al. 2021) associates CompaSO halos from 29 redshift epochs spanning z = 0.1-2.5 with their particles at the time of light-cone crossing. It then records the halo and particle information into an easily accessible product, which can be read with the CompaSO reader. The 25 base resolution boxes at fiducial cosmology have a halo light cone catalog covering an octant of the sky to z approx 0.8 and about 2000 deg2 extending to z approx 2.4. The huge boxes provide light cone information of the full sky until z approx 2.18 and extend further towards the corners of the box (available until z = 2.25). Galaxy mock catalogs on the sky can be generated easily though the AbacusHOD script providing an extended HOD framework (see Yuan et al. 2021, for details), which has been modified to work with the halo light cone catalogs. The available tracers are luminous red galaxies (LRGs), emission-line galaxies (ELGs), and quasi-stellar objects (QSOs).

Published: 2021-10-14 09:20:05 Download Dataset

Dataset Properties

Field Value
Authors
  • Garrison, Lehman Oak Ridge National Laboratory
  • Hadzhiyska, Boryana Harvard University
  • Garrison, Lehman Flatiron Institute
  • Eisenstein, Daniel Harvard University
  • Bose, Sownak Harvard University
Project Identifier AST 145, AST 135
Dataset Type ND Numeric Data
Subjects
  • 79 ASTRONOMY AND ASTROPHYSICS
Keywords
  • halo catalog
  • light cone
  • N-body simulation
  • cosmology
  • large-scale structure
Software Needed abacusutils (https://abacusutils.readthedocs.io/), ASDF (https://asdf.readthedocs.io)
Originating Organizations Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States);Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organizations Office of Science (SC);Harvard University, Flatiron Institute, Simons Foundation, National Science Foundation, National Aeronautics and Space Administration
DOE Contract DOE-SC0013718, DE-AC05-00OR22725, DE-AC02-05CH11231
Related Identifiers
  • IsSupplementTo (DOI) 10.13139/OLCF/1811689

Acknowledgements

Papers using this dataset are requested to include the following text in their acknowledgements:

*Support for 10.13139/OLCF/1825069 is provided by the U.S. Department of Energy, project AST 145, AST 135 under Contract DOE-SC0013718, DE-AC05-00OR22725, DE-AC02-05CH11231. This research used resources of the Oak Ridge Leadership Computing Facility, which is a DOE Office of Science User Facility.