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This content will become publicly available on December 7, 2018

Title: Scientific Synergy between LSST and Euclid

We report that Euclid and the Large Synoptic Survey Telescope (LSST) are poised to dramatically change the astronomy landscape early in the next decade. The combination of high-cadence, deep, wide-field optical photometry from LSST with high-resolution, wide-field optical photometry, and near-infrared photometry and spectroscopy from Euclid will be powerful for addressing a wide range of astrophysical questions. We explore Euclid/LSST synergy, ignoring the political issues associated with data access to focus on the scientific, technical, and financial benefits of coordination. We focus primarily on dark energy cosmology, but also discuss galaxy evolution, transient objects, solar system science, and galaxy cluster studies. We concentrate on synergies that require coordination in cadence or survey overlap, or would benefit from pixel-level co-processing that is beyond the scope of what is currently planned, rather than scientific programs that could be accomplished only at the catalog level without coordination in data processing or survey strategies. Also, we provide two quantitative examples of scientific synergies: the decrease in photo-z errors (benefiting many science cases) when high-resolution Euclid data are used for LSST photo-z determination, and the resulting increase in weak-lensing signal-to-noise ratio from smaller photo-z errors. We briefly discuss other areas of coordination, including high-performance computingmore » resources and calibration data. Finally, we address concerns about the loss of independence and potential cross-checks between the two missions and the potential consequences of not collaborating.« less
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  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. University of Portsmouth (United Kingdom)
  3. Universite Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris (France)
  4. Cornell Univ., Ithaca, NY (United States)
  5. Universite Savoie Mont Blanc, CNRS/IN2P3 (France)
  6. University of Bristol (United Kingdom)
  7. I.N.A.F.-Osservatorio Astronomico di Roma Via Frascati 33-I-00040 Monte Porzio Catone, Roma (Italy)
  8. Universite Cote d Azur, Observatoire de la Cote d Azur (France)
  9. University of Nottingham, University Park (United Kingdom)
  10. University of Washington, Seattle, WA (United States)
  11. Universite Paris Diderot (France); Observatoire de Paris, PSL Research University (France)
  12. Universitat Bonn (Germany)
  13. University of Toronto, Ontario (Canada)
  14. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  15. University College London (United Kingdom)
  16. Princeton University, Princeton, NJ (United States)
  17. Carnegie Mellon University, Pittsburgh, PA (United States)
  18. Durham University (United Kingdom)
  19. Universite Pierre & Marie Curie (France); IRFU, Service d Astrophysique, CEA Saclay (France)
  20. University of Pittsburgh, PA (United States)
  21. University of California, Santa Cruz, CA (United States)
  22. Universite Paris Diderot (France)
  23. University of Birmingham (United Kingdom)
  24. Institute for Astronomy, School of Physics and Astronomy, Royal Observatory Edinburgh (United Kingdom)
  25. Stony Brook Univ., NY (United States)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Supplement Series (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal. Supplement Series (Online); Journal Volume: 233; Journal Issue: 2; Journal ID: ISSN 1538-4365
American Astronomical Society/IOP
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
Country of Publication:
United States
79 ASTRONOMY AND ASTROPHYSICS; surveys; cosmology
OSTI Identifier: