Gaia Data Release 2: Photometric content and validation
- Resource Type
- Authors
- P. M. Marrese; A. Delgado; C. Ducourant; P. J. Richards; G. Altavilla; Gerry Gilmore; G. Giuffrida; Łukasz Wyrzykowski; F. De Luise; A. M. Piersimoni; Michael Davidson; M. Riello; C. Diener; Anthony G. A. Brown; D. W. Evans; G. Cocozza; Jordi Portell; S. Marinoni; Marco Castellani; Nicoletta Sanna; A. Kewley; B. Holl; Martin A. Barstow; Michele Bellazzini; N. A. Walton; P. Burgess; P. Osborne; D. Terrett; C. Fabricius; S. Galleti; J. M. Carrasco; Carla Cacciari; Carme Jordi; L. Pulone; Thomas Wevers; D. L. Harrison; Sergey E. Koposov; F. De Angeli; S. Ragaini; G. Busso; Simon Hodgkin; L. Balaguer-Núñez; Paolo Montegriffo; F. van Leeuwen; L. Palaversa; Elena Pancino
- Source
- Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 616, pp.id.A4. ⟨10.1051/0004-6361/201832756⟩
Astronomy & Astrophysics, 616, pp. 1-21
Astronomy & Astrophysics, 616, 1-21
Astronomy and Astrophysics
Dipòsit Digital de la UB
Universidad de Barcelona
Evans, D W, Riello, M, De Angeli, F, Carrasco, J M, Montegriffo, P, Fabricius, C, Jordi, C, Palaversa, L, Diener, C, Busso, G, Cacciari, C, Leeuwen, F V, Burgess, P W, Davidson, M, Harrison, D L, Hodgkin, S T, Pancino, E, Richards, P J, Altavilla, G, Balaguer-Núñez, L, Barstow, M A, Bellazzini, M, Brown, A G A, Castellani, M, Cocozza, G, De Luise, F, Delgado, A, Ducourant, C, Galleti, S, Gilmore, G, Giuffrida, G, Holl, B, Kewley, A, Koposov, S E, Marinoni, S, Marrese, P M, Osborne, P J, Piersimoni, A, Portell, J, Pulone, L, Ragaini, S, Sanna, N, Terrett, D, Walton, N A, Wevers, T & Wyrzykowski, A 2018, ' Gaia Data Release 2 : Photometric content and validation ', Astronomy and Astrophysics, vol. 616, A4 . https://doi.org/10.1051/0004-6361/201832756
Astronomy and Astrophysics, 616, A4
Recercat. Dipósit de la Recerca de Catalunya
instname
- Subject
- Astrometria
Astronomy
FOS: Physical sciences
Astrophysics
Surveys
01 natural sciences
Catàlegs d'estels
catalogs
surveys
instrumentation
photometers
techniques: photometric
galaxies: general
Star catalogs
Photometry (optics)
0103 physical sciences
Instruments astronòmics
010303 astronomy & astrophysics
Instrumentation and Methods for Astrophysics (astro-ph.IM)
Remote sensing
Physics
010308 nuclear & particles physics
Quality assessment
photometric [Techniques]
Astronomical instruments
general [Galaxies]
Astronomy and Astrophysics
Astrometry
Galaxies
Galàxies
[SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]
instrumentation: photometers
photometers [Instrumentation]
Space and Planetary Science
Content (measure theory)
Catalogs
Astrophysics - Instrumentation and Methods for Astrophysics
Data release
- Language
- ISSN
- 0004-6361
1432-0746
Aims. We describe the photometric content of the second data release of the Gaia project (Gaia DR2) and its validation along with the quality of the data. Methods. The validation was mainly carried out using an internal analysis of the photometry. External comparisons were also made, but were limited by the precision and systematics that may be present in the external catalogues used. Results. In addition to the photometric quality assessment, we present the best estimates of the three photometric passbands. Various colour-colour transformations are also derived to enable the users to convert between the Gaia and commonly used passbands. Conclusions. The internal analysis of the data shows that the photometric calibrations can reach a precision as low as 2 mmag on individual CCD measurements. Other tests show that systematic effects are present in the data at the 10 mmag level.
Comment: This version has corrections to Appendix A. All the SDSS transformations have been corrected. Tables A.1 and A.2 have changed for the SDSS relationships. Three of the subfigures in Figure A.1 have changed. The author list has been expanded