The far distance to G7.47+0.06 from proper motion measurement of H2O masers

Aya Yamauchi,Kazuyoshi Yamashita,Mareki Honma,Kazuyoshi Sunada,Akiharu Nakagawa,Yuji Ueno

Publications of the Astronomical Society of Japan（2016）

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摘要

We report on a distance measurement of 22 GHz H2O maser features associated with an ultra-compact H II region G7.47+0.06 using VERA (VLBI Exploration of Radio Astrometry). Since the source is located farther away than 10 kpc, it turned out to be difficult to derive the distance from annual parallax measurement. Meanwhile, we clearly detected the source's proper motion parallel to the Galactic plan...

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关键词

Galaxy: kinematics and dynamics,masers,stars: individual (G7.47+0.06)

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