000006081 001__ 6081
000006081 005__ 20240122121900.0
000006081 0247_ $$2DOI$$a10.1051/0004-6361/202243709
000006081 037__ $$aSCART-2023-0039
000006081 100__ $$aGaia Collaboration
000006081 245__ $$aGaia Data Release 3: The Galaxy in your preferred colours. Synthetic photometry from Gaia low-resolution spectra
000006081 260__ $$c2023
000006081 520__ $$aGaia Data Release 3 provides novel flux-calibrated low-resolution spectrophotometry for ~ 220 million sources in the wavelength range 330 nm <= lambda <= 1050 nm (XP spectra). Synthetic photometry directly tied to a flux in physical units can be obtained from these spectra for any passband fully enclosed in this wavelength range. We describe how synthetic photometry can be obtained from XP spectra, illustrating the performance that can be achieved under a range of different conditions —for example passband width and wavelength range — as well as the limits and the problems affecting it. Existing top-quality photometry can be reproduced within a few per cent over a wide range of magnitudes and colour, for wide and medium bands, and with up to millimag accuracy when synthetic photometry is standardised with respect to these external sources. Some examples of potential scientific application are presented, including the detection of multiple populations in globular clusters, the estimation of metallicity extended to the very metal-poor regime, and the classification of white dwarfs. A catalogue providing standardised photometry for ~2.2x10^8 sources in several wide bands of widely used photometric systems is provided (Gaia Synthetic Photometry Catalogue; GSPC) as well as a catalogue of ~10^5 white dwarfs with DA/non-DA classification obtained with a Random Forest algorithm (Gaia Synthetic Photometry Catalogue for White Dwarfs; GSPC-WD).
000006081 536__ $$aGaia PRODEX/$$cGaia PRODEX/$$fGaia PRODEX
000006081 594__ $$aNO
000006081 6531_ $$aCatalogs
000006081 6531_ $$asurveys
000006081 6531_ $$atechniques: photometric; spectroscopic
000006081 6531_ $$aGalaxy: general
000006081 700__ $$aMontegriffo, P.
000006081 700__ $$aBellazzini, M.
000006081 700__ $$aDe Angeli, F.
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000006081 700__ $$aBarstow, M.A.
000006081 700__ $$aBossini, D.
000006081 700__ $$aBragaglia, A.
000006081 700__ $$aBurgess, P.W.
000006081 700__ $$aCacciari, C.
000006081 700__ $$aCarrasco, J.M.
000006081 700__ $$aChornay, N.
000006081 700__ $$aDelchambre, L.
000006081 700__ $$aEvans, D.W.
000006081 700__ $$aFouesneau, M.
000006081 700__ $$aFrémat, Y.
000006081 700__ $$aGarabato, D.
000006081 700__ $$aJordi, C.
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000006081 700__ $$aEyer, L.
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000006081 700__ $$aTaylor, M.B.
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000006081 700__ $$aTolomei, L.
000006081 700__ $$aTonello, N.
000006081 700__ $$aTorra, F.
000006081 700__ $$aTorra, J.
000006081 700__ $$aTorralba Elipe, G.
000006081 700__ $$aTrabucchi, M.
000006081 700__ $$aTsounis, A.T.
000006081 700__ $$aTuron, C.
000006081 700__ $$aUlla, A.
000006081 700__ $$aUnger, N.
000006081 700__ $$aVaillant, M.V.
000006081 700__ $$avan Dillen, E.
000006081 700__ $$avan Reeven, W.
000006081 700__ $$aVanel, O.
000006081 700__ $$aVecchiato, A.
000006081 700__ $$aViala, Y.
000006081 700__ $$aVicente, D.
000006081 700__ $$aVoutsinas, S.
000006081 700__ $$aWevers, T.
000006081 700__ $$aWyrzykowski, Ł.
000006081 700__ $$aYoldas, A.
000006081 700__ $$aYvard, P.
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000006081 773__ $$cA33 (58 pp)$$pAstronomy & Astrophysics$$v674$$y2023
000006081 8560_ $$fronny.blomme@observatoire.be
000006081 85642 $$ahttps://ui.adsabs.harvard.edu/abs/2022arXiv220606215G/abstract
000006081 85642 $$ahttps://arxiv.org/abs/2206.06215
000006081 905__ $$apublished in
000006081 980__ $$aREFERD