Gaia Data Release 1: Validation of the photometry
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Evans, DW
De Angeli, F
Busso, G
Abstract
Aims. The photometric validation of the Gaia DR1 release of the ESA Gaia mission 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.
Description
Keywords
Astronomical data bases, Catalogues, Surveys, Instrumentation: photometers, Techniques: photometric, Galaxy: general
Journal Title
Astronomy and Astrophysics
Conference Name
Journal ISSN
0004-6361
1432-0746
1432-0746
Volume Title
Publisher
EDP Sciences
Publisher DOI
Sponsorship
European Commission (606740)
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.