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Gaia Data Release 1: Validation of the photometry

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Publication Date: 2017-01-23

Journal Title: Astronomy and Astrophysics

Publisher: EDP Sciences

Pages: 1-15

Language: English

Type: Article

This Version: VoR

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Citation: Evans, D., Riello, M., De Angeli, F., Busso, G., van Leeuwen, F., Jordi, C., Fabricius, C., et al. (2017). Gaia Data Release 1: Validation of the photometry. Astronomy and Astrophysics, 1-15.

Abstract: Aims. The photometric validation of the Gaia DR1 release of the ESA Gaiamission is described and the quality of the data shown. Methods. This is carried out via an internal analysis of the photometry using the most constant sources. Comparisons with external photometric catalogues are also made, but are limited by the accuracies and systematics present in these catalogues. An analysis of the quoted errors is also described. Investigations of the calibration coefficients reveal some of the systematic effects that affect the fluxes. Results. The analysis of the constant sources shows that the early-stage photometric calibrations can reach an accuracy as low as 3 mmag.

Keywords: Astronomical data bases, Catalogues, Surveys, Instrumentation: photometers, Techniques: photometric, Galaxy: general

Sponsorship: This work has been supported by the UK Space Agency, the UK Science and Technology Facilities Council. The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7-SPACE-2013-1) under grant agreement no. 606740. This work was supported in part by the MINECO (Spanish Ministry of Economy) - FEDER through grant ESP2013-48318-C2-1-R and MDM-2014-0369 of ICCUB (Unidad de Excelencia ‘María de Maeztu’). We also thank the Agenzia Spaziale Italiana (ASI) through grants ARS/96/77, ARS/98/92, ARS/99/81, I/R/32/00, I/R/117/01, COFIS-OF06-01, ASI I/016/07/0, ASI I/037/08/0, ASI I/058/10/0, ASI 2014-025-R.0, ASI 2014-025-R.1.2015, and the Istituto Nazionale di AstroFisica (INAF). The work was supported by the Netherlands Research School for Astronomy (NOVA) and the Netherlands Organisation for Scientific Research (NWO) through grant NWO-M-614.061.414. This research has made use of the APASS database, located at the AAVSO web site. Funding for APASS has been provided by the Robert Martin Ayers Sciences Fund.


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Author: Evans, DWRiello, MDe Angeli, FBusso, G van Leeuwen, FJordi, CFabricius, CBrown, AGACarrasco, JMVoss, HWeiler, MMontegriffo, PCacci



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