Strong gravitational lenses in DESI Legacy Surveys Virtual Observatory Resource

Authors
  1. Huang X.
  2. Storfer C.
  3. Gu A.
  4. Ravi V.
  5. Pilon A.
  6. Sheu W.
  7. Venguswamy R.,Banka S.
  8. Dey A.
  9. Landriau M.
  10. Lang D.
  11. Meisner A.
  12. Moustakas J.,Myers A.D.
  13. Sajith R.
  14. Schlafly E.F.
  15. Schlegel D.J.
  16. Published by
    CDS
Abstract

We have conducted a search for new strong gravitational lensing systems in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys' Data Release 8. We use deep residual neural networks, building on previous work presented by Huang+ (2020 J/ApJ/894/78). These surveys together cover approximately one-third of the sky visible from the Northern Hemisphere, reaching a z-band AB magnitude of ~22.5. We compile a training sample that consists of known lensing systems as well as non-lenses in the Legacy Surveys and the Dark Energy Survey. After applying our trained neural networks to the survey data, we visually inspect and rank images with probabilities above a threshold. Here we present 1210 new strong lens candidates.

Keywords
  1. Gravitational lensing
  2. Surveys
  3. Redshifted
  4. Infrared photometry
  5. Optical astronomy
  6. Wide-band photometry
Bibliographic source Bibcode
2021ApJ...909...27H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/909/27
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/909/27
Document Object Identifer DOI
doi:10.26093/cds/vizier.19090027

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History

2022-08-19T08:32:08Z
Resource record created
2022-08-19T08:32:08Z
Created
2022-10-14T13:45:55Z
Updated

Contact

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CDS support team
Postal Address
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