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| Paper: |
Europe’s Revolutionary Sky Surveyors: Euclid and Gaia |
| Volume: |
541, ADASS XXXIII |
| Page: |
12 |
| Authors: |
Jos de Bruijne; Bruno Altieri |
| DOI: |
10.26624/FIXB1773 |
| Abstract: |
The European Space Agency (ESA) is operating two revolutionary sky mappers: Gaia (Gaia Collaboration et al. 2016), launched in 2013, to map more than
a billion stars in our Milky Way in three dimensions to study its structure, dynamics,
and evolution, and Euclid (Laureijs et al. 2020), launched mid-2023, to map billions of galaxies across the Universe in three dimensions to study the growth of structure
under the influence of dark energy and dark matter. The ESAC Science Data Centre (ESDC) hosts the science archives of both missions. Upcoming major milestones are Euclid’s first “quality data release” (Q1), early in 2025, and Gaia’s fourth data release (DR4), not before the end of 2025. This presentation introduces both sky surveyors,
their science cases, their archive systems, and their data products, which include epoch
astrometry, epoch photometry, and epoch spectra in the case of Gaia, and pixel images,
spectra, and catalogues in the case of Euclid. ESA is developing novel and interoperable, IVOA-compliant user interfaces to access these petabyte-level data sets, including
web GUIs, Python astropy/astroquery modules, bulk-download repositories, and ESA Datalabs modules allowing users to bring their code to the data. |
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