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A Multi-Band Forced-Photometry Catalog in the ELAIS-S1 Field

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arxiv 2102.11892 v1 pith:VDETEIN2 submitted 2021-02-23 astro-ph.GA

A Multi-Band Forced-Photometry Catalog in the ELAIS-S1 Field

classification astro-ph.GA
keywords fieldcatalogforced-photometryimagesvideobandsdataelais-s1
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The ELAIS-S1 field will be an LSST Deep Drilling field, and it also has extensive multiwavelength coverage. To improve the utility of the existing data, we use The Tractor to perform forced-photometry measurements in this field. We compile data in 16 bands from the DeepDrill, VIDEO, DES, ESIS, and VOICE surveys. Using a priori information from the high-resolution fiducial images in VIDEO, we model the images in other bands and generate a forced-photometry catalog. This technique enables consistency throughout different surveys, deblends sources from low-resolution images, extends photometric measurements to a fainter magnitude regime, and improves photometric-redshift estimates. Our catalog contains over 0.8 million sources covering a 3.4 deg2 area in the VIDEO footprint and is available at 10.5281/zenodo.4540178.

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