Warianty tytułu
Języki publikacji
Abstrakty
In order to check the performance of the Gaia satellite when detecting double stars, we attempted to discover a photocenter shift affecting Gaia's second data release (Gaia DR2). We analyzed data of bona-fide double stars from "Double and Multiple System Annex" catalog and matched them with the Gaia DR2 catalog. We tried to derive a relationship between measurements of visual magnitude and signs of binarity based on parallaxes and proper motions. A comprehensive study of parallaxes indicates the presence of the photocenter shift effect. Due to the proper motion two-dimensional nature, we conducted only a simply study which implies that a real photocenter shift may affect double stars appearing in the Gaia DR2 catalog as single sources.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
19--32
Opis fizyczny
Bibliogr. 17 poz., wykr.
Twórcy
autor
- University of Santiago de Compostela, Santiago de Compostella, Spain, oriona38@hotmail.com
autor
- University of Santiago de Compostela, Santiago de Compostella, Spain
- Ramon María Aller Observatory
autor
- University of Santiago de Compostela, Santiago de Compostella, Spain
- Department of Statistics, Mathematical Analysis and Optimization
Bibliografia
- Arenou, F., et al. 2018, A&A, 616, A17.
- Brandt, T.D. 2018, ApJS, 239, 31.
- ESA 1997, The HIPPARCOS and TYCHO catalogues. Astrometric and Photometric Star Catalogues derived from the ESA HIPPARCOS Space Astrometry Mission (The Netherlands: ESA Special Publication),1200.
- Fabricius, C., and Makarov, V. 2000, A&A, 356, 141.
- Frankowski, A., Jancart, F., and Jorissen, A. 2007, A&A, 464, 377.
- Gaia Collaboration et al. 2016, A&A, 595, A2.
- Gaia Collaboration et al. 2018, A&A, 616, A1.
- Jiménez-Esteban, F. M., Solano, E., and Rodrigo, C. 2019, AJ, 157, 78.
- Jordi, C., et al. 2010, A&A, 523, A48.
- Kervella, P., Arenou, F., Mignard, F., and Thévenin, F. 2019, A&A, 623, A72.
- Lindegren, L., et al. 1997, A&A, 323, L53.
- Luri, X., et al. 2018, A&A, 616, A9.
- Makarov, V., Fabricius, C., and Frouard, J. 2017, ApJ, 840, L1.
- R Core Team 2013, “R Foundation for Statistical Computing”, Vienna, Austria.
- Lindegren, L. et al. 2016, A&A, 595, A4.
- Winters, J., et al. 2019, AJ, 157, 216.
- Yu, K., and Jones, M.C. 1998, Journal of the American Statistical Association, 93, 228.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-4e5ffd6a-78e1-432d-8f83-cc2122e73d18