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Galactic Maser Astrometry with VERA

Published online by Cambridge University Press:  07 February 2024

Mareki Honma Open the ORCID record for Mareki Honma [Opens in a new window] ,
Tomoya Hirota Open the ORCID record for Tomoya Hirota [Opens in a new window] ,
Kazuya Hachisuka ,
Hiroshi Imai ,
Hideyuki Kobayashi ,
Takaaki Jike ,
Akiharu Nakagawa Open the ORCID record for Akiharu Nakagawa [Opens in a new window] ,
Tomoaki Oyama ,
Kazuyshi Sunada Open the ORCID record for Kazuyshi Sunada [Opens in a new window]  and
Daisuke Sakai Open the ORCID record for Daisuke Sakai [Opens in a new window]
...Show all authors
Mareki Honma*
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan. University of Tokyo, Bunkyo, Tokyo 113-0033, Japan SOKENDA, Mitaka, Tokyo 181-8588, Japan
Tomoya Hirota
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan. SOKENDA, Mitaka, Tokyo 181-8588, Japan
Kazuya Hachisuka
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan.
Hiroshi Imai
Affiliation:
Kagoshima University, Kagoshima, Kagoshima 890-0065, Japan
Hideyuki Kobayashi
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan. SOKENDA, Mitaka, Tokyo 181-8588, Japan
Takaaki Jike
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan.
Akiharu Nakagawa
Affiliation:
Kagoshima University, Kagoshima, Kagoshima 890-0065, Japan
Tomoaki Oyama
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan.
Kazuyshi Sunada
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan.
Daisuke Sakai
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan.
Nobuyuki Sakai
Affiliation:
National Astronomical Research Institute of Thailand, Chiangmai 50180, Thailand
Aya Yamauchi
Affiliation:
National Astronomical Observatory of Japan, Oshu, Iwate 023-0861, Japan.
*
email: mareki.honma@nao.ac.jp
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Abstract

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VERA has been regularly conducting astrometry of Galactic maser sources for ∼ 20 years, producing more than 100 measurements of parallaxes and proper motions of star-forming regions as well as AGB stars. By combining the observational results obtained by VLBA BeSSeL, EVN, and LBA, maser astrometry provides a unique opportunity to explore the fundamental structure of the Galaxy. Here we present the view of the Galaxy revealed by the maser astrometry, and also discuss the importance of maser astrometry in the era of GAIA by comparing the results obtained by VLBI and GAIA. We also present our view of “proper motions toward the future” of the relevant field, expected in the next decade based on global collaborations.

Keywords

VLBImaserMilky Way Galaxy
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. 82 - 87
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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