As a partner data center, CDS publishes Gaia data when they are publicly available, at the same time as the official GACS archive at ESA.

Gaia Data Release 2

Gaia DR2 is available in CDS services since April 25th 2018. Access to data is provided in the following services:

• VizieR provides a Web interface as well as Cone Search access to Gaia tables.
  Gaia DR2 in VizieR
  Cone Search base URL for GaiaSource:
  http://vizier.u-strasbg.fr/viz-bin/votable/-A?-out.all&-source=I%2F345%2Fgaia2&
• TAP VizieR lets the user write (potentially sophisticated) ADQL queries against Gaia data.
  Gaia DR2 TAP access
  TAP endpoint (to be used in TAP clients, eg Topcat or TAPHandle) is:
  http://tapvizier.u-strasbg.fr/TAPVizieR/tap/
• A command-line tool find_gaia_dr2 allows to query Gaia DR2 by position, source ID or by constraints on the parallaxes, proper motions, fluxes, etc.
  It also lets the user retrieve the values "unformatted", with the original precision and number of decimal digits.
• the cross-match service offers fast spatial cross-identification with VizieR tables having positions or user-uploaded list of positions. In this service, Gaia positions have been precessed to epoch 2000 if proper motions data were available.
• Aladin Desktop features a dedicated form for easy access to Gaia data. Proper motions of sources can be visualized.
  Gaia DR2 dataset is also available as a HiPS progressive catalogue, seamlessly browsable from Aladin Desktop and Aladin Lite.
  Explore Gaia DR2 data in Aladin Lite
• Positions of Gaia DR2 object names can be resolved using the Sesame service.

Other DR2 data products

MOCs (coverage maps) and HEALPix density maps are available the main GaiaSource tables.

A color flux map, built from the fluxes values in the table GaiaSource, can be visualised as a HiPS.

Data access from other partner data centers

• ARI's Gaia services (Heidelberg)
• Gaia at AIP (Potsdam)
• Gaia at ASDC (Roma)

Gaia Data Release 1

Gaia DR1 is available in CDS services since September 14th 2016. Access to data is provided in the following services:

• Gaia DR1 in VizieR
  Cone Search base URL for TGAS:
  http://vizier.u-strasbg.fr/viz-bin/votable/-A?-out.all&-source=I%2F337%2Ftgas&
  Cone Search base URL for GaiaSource:
  http://vizier.u-strasbg.fr/viz-bin/votable/-A?-out.all&-source=I%2F337%2Fgaia&
• Gaia DR1 TAP access
  TAP endpoint (to be used in TAP clients, eg Topcat or TAPHandle) is:
  http://tapvizier.u-strasbg.fr/TAPVizieR/tap/
• the cross-match service offers fast spatial cross-identification with VizieR tables having positions or user-uploaded list of positions. In this service, Gaia positions have been precessed to epoch 2000 if proper motions data were available.
• Aladin Desktop features a dedicated form for easy access to Gaia data. Proper motions of sources can be visualized.
  GDR1 is also available as HiPS progressive catalogues, seamlessly browsable from Aladin Desktop and Aladin Lite.
  Explore Gaia DR1 data in Aladin Lite

Other DR1 data products

MOCs (coverage maps) and HEALPix density maps are available for TGAS (Tycho-Gaia astrometric solution) and GaiaSource tables.

Other Gaia-related data

GUMS

The GaiaSimu Universe Model Snapshot is available from VizieR, and can also be queried from TAP VizieR.

IGSL

The Initial Gaia Source List is available from VizieR, in the cross-match service, and can also be queried from TAP VizieR.

Attitude

The Gaia Attitude Star Catalogue (ASC) is available from VizieR, in the cross-match service, and can also be queried from TAP VizieR.

Gaia contribution to CU9

CDS is a member of Gaia Coordination Unit 9 (CU9) and contributes to the following Work Packages:

• WP952 (service operations)
• WP972 (science enabling applications)
• WP910 (beta testing)