Candidate cluster-scale gravitationally lensed quasars from CluMPR and DESI Legacy Survey
Creators
- 1. University of Montreal
- 2. University of Pittsburgh
- 3. Pennsylvania State University
- 4. Lawrence Berkeley National Laboratory
- 5. Shanghai Jiao Tong University
Description
Candidate cluster-scale strongly-lensed quasars from DESI Legacy Survey (DESI QSO targets) and CluMPR DESI Legacy Survey galaxy cluster catalog.
Paper decribing the CluMPR galaxy cluster catalogs and candidate lensed quasar catalogs: The CluMPR Galaxy Cluster-Finding Algorithm and DESI Legacy Survey Galaxy Cluster catalogue (M. J. Yantovski-Barth et al.)
Description:
To search for lensed quasars, we use two Einstein radii: one corresponds to wide angle lensing by the entire cluster (๐ = 10^15 ๐โ ), and the other corresponds to lensing by the core of the cluster (๐ = 0.25 ∗ 10^15 ๐โ ).
We use the colors in bands g-r, g-z, and r-W1 to evaluate candidate lensed quasars. If at least two quasars are within 1 magnitude of each other in all 3 colors, we rate the candidate at Grade C. If at least three quasars are within 1 magnitude of each other in all 3 colors, we rate the the candidate at Grade B. If either 4 quasars or two combinations of 3 quasars are within 1 magnitude of each other in all 3 colors, we rate the candidate as Grade A.
Files
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Additional details
Related works
- Is supplement to
- Dataset: 10.5281/zenodo.8157752 (DOI)