Speaker
Description
The European Space Agency’s Euclid mission and the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) are poised to revolutionize astrophysics. Euclid delivers razor-sharp space-based Euclid imagery in one wide optical band with additional photometry in three NIR filters while LSST provides deep multi-band photometry across six filters (u, g, r, i, z, y). Individually, these surveys offer considerable scientific potential. The combination of the two promises to unlock new frontiers in cosmological and astrophysical research. The scientific rationale and the derived data products (DDPs) are described extensively in Guy et al. 2022. This work is timely: currently small subsets of both surveys exist: the LSST Data Preview 1 and the Euclid Quick Release 1 which overlap in the Euclid Deep Field South. The simplest solution to providing a joint catalog is to do a spatial join between the two catalogs. This is referred to as DDP-1 . The next, more sophisticated approach (DDP-2) starts with object detection from images in one survey and measures fluxes (PSF, aperture, total) using matched images from the other survey. Three software packages are being explored: AstroPhot, SourceExtractor++, and LSSTpipe. All three are built with the goal of doing accurate, multi-band forced photometry. This presentation explores these DDPs on the Euclid Deep Field South with a view to expanding the process when the larger data releases from both surveys become available.
| Affiliation of the submitter | Canadian Astronomy Data Centre |
|---|---|
| Attendance | in-person |
