Gaia Data Release 3

Katz, D.; Sartoretti, P.; Guerrier, A.; Panuzzo, P.; Seabroke, G. M.; Thévenin, Mathieu; Cropper, M.; Benson, K.; Blomme, R.; Haigron, R.; Marchal, O.; Smith, M.; Baker, Steven G.; Chemin, L.; Damerdji, Y.; David, M.; Dolding, C.; Frémat, Y.; Gosset, E.; Janßen, K.; Jasniewicz, G.; Lobel, A.; Plum, G.; Samaras, N.; Snaith, Owain; Soubiran, C.; Vanel, O.; Zwitter, T.; Antoja, T.; Arenou, F.; Babusiaux, C.; Brouillet, N.; Caffau, E.; Matteo, P. Di; Fabre, C.; Fabricius, C.; Fragkoudi, Francesca; Haywood, M.; Huckle, H. E.; Hottier, C.; Lasne, Y.; Leclerc, N.; Mastrobuono-Battisti, A.; Royer, F.; Teyssier, D.; Zorec, J.; Crifo, F.; Piccolo, A. Jean-Antoine; Turon, C.; Viala, Y.

doi:10.1051/0004-6361/202244220

articleAstronomy and AstrophysicsNov 28, 2022DIAMOND OA

Gaia Data Release 3

DKD. Katz PSP. Sartoretti AGA. Guerrier PPP. Panuzzo GMG. M. Seabroke

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Abstract

Context. Gaia Data Release 3 ( Gaia DR3) contains the second release of the combined radial velocities. It is based on the spectra collected during the first 34 months of the nominal mission. The longer time baseline and the improvements of the pipeline made it possible to push the processing limit from G RVS = 12 in Gaia DR2 to G RVS = 14 mag. Aims. We describe the new functionalities implemented for Gaia DR3, the quality filters applied during processing and post-processing, and the properties and performance of the published velocities. Methods. For Gaia DR3, several functionalities were upgraded or added to the spectroscopic pipeline. The calibrations were improved in order to better model the temporal…

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Topics

Keywords

Physics
Radial velocity
Stars
Astrophysics
Milky Way
Astrometry
Halo
Magnitude (astronomy)

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