Proc. IAU volume 13, issue S336, P162-167 2017 DOI: 10.1017/s1743921317011061 View full text
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Mareki Honma, Takumi Nagayama, Tomoya Hirota, Nobuyuki Sakai, Tomoaki Oyama, Aya Yamauchi, Toshiaki Ishikawa, Toshihiro Handa, Ken Hirano, Hiroshi Imai, Takaaki Jike, Osamu Kameya, Yusuke Kono, Hideyuki Kobayashi et al.

Abstract: AbstractIn this proceeding paper, we introduce the recent results of Galactic maser astrometry by mainly focusing on those obtained with Japanese VLBI array VERA. So far we have obtained parallaxes for 86 sources including preliminary results, and combination with the data obtained with VLBA/BeSSeL provides astrometric results for 159 sources. With these most updated results we conduct preliminary determinations of Galactic fundamental parameters, obtaining R0 = 8.16 ± 0.26 kpc and Θ0 = 237 ± 8 km/s. We also d…

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