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A joint Roman Space Telescope and Rubin Observatory synthetic wide-field imaging survey

Publication ,  Journal Article
Troxel, MA; Lin, C; Park, A; Hirata, C; Mandelbaum, R; Jarvis, M; Choi, A; Givans, J; Higgins, M; Sanchez, B; Yamamoto, M; Awan, H; Chiang, J ...
Published in: Monthly Notices of the Royal Astronomical Society
June 1, 2023

We present and validate 20 deg2 of overlapping synthetic imaging surveys representing the full depth of the Nancy Grace Roman Space Telescope High-Latitude Imaging Survey (HLIS) and 5 yr of observations of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). The two synthetic surveys are summarized, with reference to the existing 300 deg2 of LSST simulated imaging produced as part of Dark Energy Science Collaboration (DESC) Data Challenge 2 (DC2). Both synthetic surveys observe the same simulated DESC DC2 universe. For the synthetic Roman survey, we simulate for the first time fully chromatic images along with the detailed physics of the Sensor Chip Assemblies derived from lab measurements using the flight detectors. The simulated imaging and resulting pixel-level measurements of photometric properties of objects span a wavelength range of ∼0.3–2.0 μm. We also describe updates to the Roman simulation pipeline, changes in how astrophysical objects are simulated relative to the original DC2 simulations, and the resulting simulated Roman data products. We use these simulations to explore the relative fraction of unrecognized blends in LSST images, finding that 20–30 per cent of objects identified in LSST images with i-band magnitudes brighter than 25 can be identified as multiple objects in Roman images. These simulations provide a unique testing ground for the development and validation of joint pixel-level analysis techniques of ground- and space-based imaging data sets in the second half of the 2020s – in particular the case of joint Roman–LSST analyses.

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Published In

Monthly Notices of the Royal Astronomical Society

DOI

EISSN

1365-2966

ISSN

0035-8711

Publication Date

June 1, 2023

Volume

522

Issue

2

Start / End Page

2801 / 2820

Related Subject Headings

  • Astronomy & Astrophysics
  • 5109 Space sciences
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0201 Astronomical and Space Sciences
 

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Troxel, M. A., Lin, C., Park, A., Hirata, C., Mandelbaum, R., Jarvis, M., … Wood-Vasey, M. (2023). A joint Roman Space Telescope and Rubin Observatory synthetic wide-field imaging survey. Monthly Notices of the Royal Astronomical Society, 522(2), 2801–2820. https://doi.org/10.1093/mnras/stad664
Troxel, M. A., C. Lin, A. Park, C. Hirata, R. Mandelbaum, M. Jarvis, A. Choi, et al. “A joint Roman Space Telescope and Rubin Observatory synthetic wide-field imaging survey.” Monthly Notices of the Royal Astronomical Society 522, no. 2 (June 1, 2023): 2801–20. https://doi.org/10.1093/mnras/stad664.
Troxel MA, Lin C, Park A, Hirata C, Mandelbaum R, Jarvis M, et al. A joint Roman Space Telescope and Rubin Observatory synthetic wide-field imaging survey. Monthly Notices of the Royal Astronomical Society. 2023 Jun 1;522(2):2801–20.
Troxel, M. A., et al. “A joint Roman Space Telescope and Rubin Observatory synthetic wide-field imaging survey.” Monthly Notices of the Royal Astronomical Society, vol. 522, no. 2, June 2023, pp. 2801–20. Scopus, doi:10.1093/mnras/stad664.
Troxel MA, Lin C, Park A, Hirata C, Mandelbaum R, Jarvis M, Choi A, Givans J, Higgins M, Sanchez B, Yamamoto M, Awan H, Chiang J, Doré O, Walter CW, Zhang T, Cohen-Tanugi J, Gawiser E, Hearin A, Heitmann K, Ishak M, Kovacs E, Mao YY, Wood-Vasey M. A joint Roman Space Telescope and Rubin Observatory synthetic wide-field imaging survey. Monthly Notices of the Royal Astronomical Society. 2023 Jun 1;522(2):2801–2820.
Journal cover image

Published In

Monthly Notices of the Royal Astronomical Society

DOI

EISSN

1365-2966

ISSN

0035-8711

Publication Date

June 1, 2023

Volume

522

Issue

2

Start / End Page

2801 / 2820

Related Subject Headings

  • Astronomy & Astrophysics
  • 5109 Space sciences
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0201 Astronomical and Space Sciences