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TOPCAT and Gaia
Taylor, M. B.
TOPCAT, and its command line counterpart STILTS, are powerful tools for working with large source catalogs. ESA's Gaia mission, most recently with its second data release, is producing source catalogs of unprecedented quality for more than a billion sources. This paper presents some examples of how TOPCAT and STILTS can be used for analysis of Gai…
MegaPipe 2.0: 10000 Square Degrees of CFHT MegaCam Imaging
Gwyn, Stephen
MegaPipe, the MegaCam data processing pipeline at the CADC, has been upgraded to version 2.0 and has processed over 10000 square degrees of the sky. MegaPipe has been operating since 2008. It was originally intended to increase the usage of archival MegaCam data by calibrating and stacking the images as they became public. That focus expanded to i…
Gaia DR2 and the Virtual Observatory: VO in Operations New Era
Merín, Bruno; Hambly, Nigel C.; Allen, Mark +15 more
During the last decade, the IVOA (International Virtual Observatory Alliance) has been tasked with the difficult task of defining standards to interchange astronomical data. These efforts have been supported by many IVOA partners in general and by the ESAC Science Data Centre (ESDC) in particular, that have been collaborating in the definition of …
Driving Gaia Science from the ESA Archive: DR2 to DR3
Mora, A.; Bakker, J.; de Teodoro, P. +11 more
Released 25th April, Gaia DR2 hosted in the ESA Gaia archive is leading a paradigm shift in the way astronomers access and process astronomical data in ESA archives.
An unprecedented active community of thousands of scientists is making use of the latest IVOA protocols and services (TAP, DataLink) in this archive, benefitting from remote exec…Data-Driven Pixelation with Voronoi Tessellation
Lam, Marco C.; McWhirter, Paul R.
In modern Astrophysics, Voronoi Tessellation is a rarely used as a pixelation scheme. While it exists, it is almost exclusively used in signal enhancements, clustering analysis, and simulations. In observational Astronomy, with Gaia, ZTF, DES, etc. data becoming available, this branch of science is becoming more and more data-driven. HEALPix offer…