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A New Estimate of the Best Value for the Solar Galactocentric Distance

Authors
  • Bobylev, V. V.1
  • Bajkova, A. T.1
  • 1 Central (Pulkovo) Pulkovo Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, 196140, Russia , St. Petersburg (Russia)
Type
Published Article
Journal
Astronomy Reports
Publisher
Pleiades Publishing
Publication Date
Jun 17, 2021
Volume
65
Issue
6
Pages
498–506
Identifiers
DOI: 10.1134/S1063772921070015
Source
Springer Nature
Disciplines
  • Article
License
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Abstract

AbstractUsing data from the literature, we made a list of individual estimates of the solar Galactocentric distance, which were performed after 2017 by different methods. These values have not yet been used to calculate the best value of mean \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{R}_{0}}$$\end{document}. For the sample containing 21 estimates, based on the standard approach, we found the weighted mean \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{\bar {R}}_{0}} = 8.14$$\end{document} kpc with the dispersion \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\sigma = 0.16$$\end{document} kpc, and using the median statistics, we obtained the estimate \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{R}_{0}} = 8.15 \pm 0.11$$\end{document} kpc. For practical use, the value \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{R}_{0}} = 8.1 \pm 0.1$$\end{document} kpc can be recommended.

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