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Astrometric observation of the Galactic LPVs with VERA; Mira and OH/IR stars

Published online by Cambridge University Press:  30 December 2019

Akiharu Nakagawa ,
Tomoharu Kurayama ,
Gabor Orosz ,
Tomoaki Oyama ,
Takumi Nagayama  and
Toshihiro Omodaka
Akiharu Nakagawa
Affiliation:
Kagoshima University, 1-21-35, Korimoto, Kagoshima-shi, Kagoshima, Japan email: nakagawa@sci.kagoshima-u.ac.jp
Tomoharu Kurayama
Affiliation:
Teikyo University of Science, 2-2-1 Sakuragi, Senjyu, Adachi-ku, Tokyo, Japan
Gabor Orosz
Affiliation:
Kagoshima University, 1-21-35, Korimoto, Kagoshima-shi, Kagoshima, Japan email: nakagawa@sci.kagoshima-u.ac.jp
Tomoaki Oyama
Affiliation:
National Astronomical Observatory of Japan, Mizusawa VLBI Observatory, 2-12 Hoshigaoka-cho, Mizusawa-ku, Oshu, Iwate, Japan
Takumi Nagayama
Affiliation:
National Astronomical Observatory of Japan, Mizusawa VLBI Observatory, 2-12 Hoshigaoka-cho, Mizusawa-ku, Oshu, Iwate, Japan
Toshihiro Omodaka
Affiliation:
Kagoshima University, 1-21-35, Korimoto, Kagoshima-shi, Kagoshima, Japan email: nakagawa@sci.kagoshima-u.ac.jp
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Abstract

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We present studies of Long Period Variables (LPVs) in our Galaxy based on astrometric VLBI observations of H2O and SiO masers. The Galactic Miras and OH/IR stars are our main targets. For Miras, we present the distribution of the LPVs on the MK – log P plane. Galactic Miras show consistency with PLR in the LMC except for some fainter sources. Parallaxes of the LPVs determined from VLBI and Gaia are compared. There seems to be some offset.

Keywords

astrometryinterferometricvariablesAGB and post-AGB
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 476 - 477
Copyright
© International Astronomical Union 2019 

References

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