activity
20152025
most citedSun-Sized Water Vapor Masers in Cepheus A

19 citations · 37 across the 5 of their papers we have counts for

collaborators

5 papers

astro-ph.SR2025

First VLBI Imaging of SiO , Masers in VY Canis Majoris

Hiroko Shinnaga, Miyako Oyadomari, Hiroshi Imai +8

We achieved the first VLBI detections of the ground vibrational state () SiO (hereafter, SiO) and SiO masers of the rotational transitions, to…

astro-ph.GA2024★ 6 cited

Trigonometric parallax and proper motion of Sagittarius A* measured by VERA using the new broad-band back-end system OCTAVE-DAS

Tomoaki Oyama, Takumi Nagayama, Aya Yamauchi +12

We successfully measured the trigonometric parallax of Sagittarius A* (Sgr A*) to be micro-arcseconds (as) using the VLBI Exploration of Radio Astrometry (VERA) with…

astro-ph.GA2018★ 19 cited

Sun-Sized Water Vapor Masers in Cepheus A

A. M. Sobolev, J. M. Moran, M. D. Gray +6

We present the first VLBI observations of a Galactic water maser (in Chepeus A) made with a very long baseline interferometric array involving the RadioAstron Earth-orbiting satell…

astro-ph.SR2016★ 10 cited

Do Water Fountain Jets Really Indicate the Onset of the Morphological Metamorphosis of Circumstellar Envelopes?

Bosco H. K. Yung, Jun-ichi Nakashima, Chih-Hao Hsia +1

The small-scale bipolar jets having short dynamical ages from "water fountain (WF)" sources are regarded as an indication of the onset of circumstellar envelope morphological metam…

astro-ph.SR2015★ 2 cited

Molecular jet emission and a spectroscopic survey of S235AB

R. A. Burns, T. Handa, T. Hirota +3

Context. The S235AB star forming region houses a massive young stellar object which has recently been reported to exhibit possible evidence of jet rotation - an illusive yet crucia…