6087 20230113152515.0 SCART-2023-0045 Ulla, A. Gaia DR3 documentation Chapter 11: Astrophysical parameters 2022 This chapter of the Gaia DR3 documentation describes the processing of the source characterisation in Gaia DR3, based on mean BP/RP and RVS spectra, astrometry, and photometry. Characterisation implies stellar and extragalactic class probabilities, object-type labels, and parametrisations with associated uncertainties (1D data products). Gaia DR3 also includes multi-dimensional data products such as a 2D extinction map and a self-organising map of outliers. Gaia PRODEX/ Gaia PRODEX/ Gaia PRODEX NO Creevey, O. L. Álvarez, M. A. Andrae, R. Bailer-Jones, C. A. L. Bellas-Velidis, I. Brugaletta, E. Carballo, R. Dafonte, C. Delchambre, L. Dharmawardena, T. Drimmel, R. Fouesneau, M. Frémat, Y. Garabato, D. Hatzidimitriou, D. Heiter, U. Kordopatis, G. Korn, A. J. Lanzafame, A. Lobel, A. Manteiga, M. Marshall, D. J. Pailler, F. Pallas-Quintela, L. Recio-Blanco, A. Rybizki, J. Sarro Baro, L. M. Schultheis, M. Sordo, R. Soubiran, C. Thévenin, F. Vallenari, A. Gaia DR3 documentation, European Space Agency; Gaia Data Processing and Analysis Consortium. 2022 ronny.blomme@observatoire.be https://gea.esac.esa.int/archive/documentation/GDR3/index.html published in NONREF