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Galactic Astrometry with VLBI

Published online by Cambridge University Press:  07 February 2024

Kazi L. J. Rygl Open the ORCID record for Kazi L. J. Rygl [Opens in a new window]
Kazi L. J. Rygl*
Affiliation:
INAF-Istituto di Radioastronomia, Via P. Gobetti 101, I-40129 Bologna, Italy.
*
email: [email protected]
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Abstract

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Astrometric very long baseline interferometry (VLBI) observations of stellar masers are an excellent method to determine distances and proper motions in our Galaxy. Large maser astrometry surveys, the Bar and Spiral Structure Legacy survey and the VLBI Exploration for Radio Astrometry, allowed astronomers to determine fundamental Galactic parameters, such as the rotation curve and the distance to the Galactic centre, as well as to trace the spiral arms. In this review, the results of these surveys will be summarised and compared with astrometric measurements using other methods.

Keywords

MasersastrometryVLBIMilky Way
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 69 - 81
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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