The remaining 361 million objects have 2-parameter solutions (right ascension and declination only). The vast majority of them, 1.33 billion sources, have 5-parameter solutions, i.e., in addition to right ascension and declination, also the proper motion (in right ascension and declination) and the parallax are given. Gaia DR2 provides astrometry for 1.69 billion objects. Photometry: Incorrect value of g_transit_n_obs in RAW formatĪstrometry: 2- versus 5-parameter solutions.Photometry: Systematic effects and response curves.Radial Velocities: Potential contamination in crowded regions.Cross-match: Gaia DR1 neighbours close to high proper motion Gaia DR2 objects. Orientation and rotation of the Gaia DR2 reference frame for bright objects.Astrometry: Systematic effects in Gaia DR2 parallaxes for very bright stars.Astrometry: Considerations for the use of DR2 astrometry.Astrometry: 2- versus 5-parameter solutions.Tips on how to better make use of the Gaia Archive can be found here. The Gaia DR2 contents page contains a summary of limitations that were known, and documented, already at the release date. Video lectures and course materials are available.This page lists the issues in our second data release that have been discovered after the release of the Gaia data and related documentation.A lot of useful slides are available here.Ĥ9th Saas-Fee Advanced Course - The Milky Way in the Gaia Era.There is also a associated conference: In the Balance: Stasis and Disequilibrium in the Milky Way.KITP Project 2019: Dynamical Models for Stars and Gas in Galaxies in the Gaia Era There are a lot of interesting discussions and ideas can be found in the sprint website.A project to support exploration and scientific use of the Gaia Data Releases.Gaia Sky - a real-time, 3D, astronomy visualisation software By the Oxford's Galactic Dynamics group.GaiaTools - A collection of scripts for analyzing the data from the Gaia satellite Tools for working with the ESA/Gaia data and related data sets (APOGEE, GALAH, LAMOST DR2, and RAVE). Gaia_tools - Tools for working with the data and related data sets PyGaia provides python modules for the simulation of Gaia data and their errors, as well modules for the manipulation and analysis of the Gaia catalogue data PyGaia - Python toolkit for basic Gaia data simulation, manipulation, and analysis Gaia Data Release 2 - Cross-match with external catalogues: algorithms and results.Gaia Data Release 2 - Using Gaia parallaxes.Gaia Data Release 2 - Summary of the contents and survey properties.For using DR2 data, the most important ones are:.Most of these "official" publications are compiled into two special issues of the Astronomy & Astrophysics: There are too many important publications about the Gaia mission, instrument, data reduction, and data release.Twitter handle: Documents: Special Issues:.This website provides cross-matched catalogs of Gaia data for stars observed by Kepler/K2.Exploring Gaia data with TOPCAT and STILTS.The Gaia TAP+ catalog can be accessed through astroquery.gaia module.And Python code for calculating the Renormalized Unit Weight Error from the Gaia DR2 table columns.Also see his example of the construction of a sample of sources from Gaia DR2 with all recommend data quality filtering applied.Tutorials on the use of (Gaia) astrometry in astronomical data analysis or inference problems.Distances to 1.33 billion stars in Gaia data release 2 Official tutorials to use Gaia DR2 data.And all Gaia data can be directly downloaded from here in.Also at Gaia at CDS Gaia at ARI Gaia at AIP and Gaia at ASDC.All data are available from the ESA Gaia Data Archive.This amounts to about 1 per cent of the Galactic stellar population. Gaia will provide unprecedented positional and radial velocity measurements with the accuracies needed to produce a stereoscopic and kinematic census of about one billion stars in our Galaxy and throughout the Local Group. Gaia is an ambitious mission to chart a three-dimensional map of our Galaxy, the Milky Way, in the process revealing the composition, formation and evolution of the Galaxy.
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