CaltechAUTHORS
Published October 2021 | Version Accepted Version + Published
Journal Article Open

Cosmology with the Roman Space Telescope: synergies with the Rubin Observatory Legacy Survey of Space and Time

Creators

  • 1. ROR icon University of Arizona
  • 2. ROR icon University of California, Riverside
  • 3. ROR icon Jet Propulsion Lab
  • 4. ROR icon The Ohio State University
  • 5. ROR icon Carnegie Mellon University
  • 6. ROR icon University of Pennsylvania
  • 7. ROR icon Nagoya University
  • 8. ROR icon University of Tokyo
  • 9. ROR icon Infrared Processing and Analysis Center
  • 10. ROR icon California Institute of Technology
  • 11. ROR icon Goddard Space Flight Center
  • 12. ROR icon Princeton University
  • 13. ROR icon Duke University
  • 14. ROR icon Stony Brook University
  • 15. ROR icon Cornell University

Abstract

We explore synergies between the Nancy Grace Roman Space Telescope and the Vera Rubin Observatory's Legacy Survey of Space and Time (LSST). Specifically, we consider scenarios where the currently envisioned survey strategy for the Roman Space Telescope's High Latitude Survey (HLS reference), i.e. 2000 deg2 in four narrow photometric bands is altered in favour of a strategy of rapid coverage of the LSST area (to full LSST depth) in one band. We find that in only five months, a survey in the W-band can cover the full LSST survey area providing high-resolution imaging for >95 per cent of the LSST Year 10 gold galaxy sample. We explore a second, more ambitious scenario where the Roman Space Telescope spends 1.5 yr covering the LSST area. For this second scenario, we quantify the constraining power on dark energy equation-of-state parameters from a joint weak lensing and galaxy clustering analysis. Our survey simulations are based on the Roman Space Telescope exposure-time calculator and redshift distributions from the CANDELS catalogue. Our statistical uncertainties account for higher order correlations of the density field, and we include a wide range of systematic effects, such as uncertainties in shape and redshift measurements, and modelling uncertainties of astrophysical systematics, such as galaxy bias, intrinsic galaxy alignment, and baryonic physics. We find a significant increase in constraining power for the joint LSST + HLS wide survey compared to LSST Y10 (FoM+(HLSwide) = 2.4 FoM_(LSST)) and compared to LSST + HLS (FoM_(HLSwide) = 5.5 FoM_(HLSref)).

Additional Information

© 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model). Accepted 2020 December 16. Received 2020 December 14; in original form 2020 April 11. Published: 01 March 2021. This work is supported by NASA ROSES ATP 16-ATP16-0084 and NASA 15-WFIRST15-0008 grants. Support for MS was provided by the Office of Research and Economic Development, University of California, Riverside through the FIELDS NASA–MIRO programme. The Flatiron Institute is supported by the Simons Foundation. Simulations in this paper use High Performance Computing (HPC) resources supported by the University of Arizona TRIF, UITS, and RDI and maintained by the UA Research Technologies department. Part of the research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. Data Availability: The data underlying this article will be shared on reasonable request to the corresponding author.

Attached Files

Published - stab533.pdf

Accepted Version - 2004.04702.pdf

Files

2004.04702.pdf

Files (1.9 MB)

Name Size
md5:2b39e2dad0b556b2b29dd343e6311e0e
1.1 MB Preview Download
md5:aaa8c3f03c2d336fd1c26b475a978e84
831.3 kB Preview Download

Additional details

Additional titles

Alternative title
Cosmology with the Wide-Field Infrared Survey Telescope -- Synergies with the Rubin Observatory Legacy Survey of Space and Time

Identifiers

Eprint ID
111555
Resolver ID
CaltechAUTHORS:20211020-172259803

Related works

Describes
https://arxiv.org/abs/2004.04702 (URL)

Funding

NASA
ATP 16-ATP16-0084
NASA
15-WFIRST15-0008
University of California, Riverside
Flatiron Institute
Simons Foundation
NASA/JPL/Caltech

Dates

Created
2021-10-20
Created from EPrint's datestamp field
Updated
2023-03-15
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Infrared Processing and Analysis Center (IPAC)