1.4k citations · 3.9k across the 21 of their papers we have counts for
21 papers
On the Nature of the Protoplanetary Nebula OH\,231.8+4.2
Andreas Brunthaler, Yoon Kyung Choi, Karl M. Menten +1
Aims. OH 231.8+4.2 , also known as the Rotten Egg or Calabash nebula is a protoplanetary nebula which is seen in the direction of the open cluster M 46. While an association of the…
44 GHz methanol masers: Observations toward 95 GHz methanol masers
Wenjin Yang, Ye Xu, Yoon Kyung Choi +5
We report a simultaneous 44 and 95 GHz class I methanol maser survey toward 144 sources from the 95 GHz class I methanol maser catalog. The observations were made with the three te…
The First VERA Astrometry Catalog
VERA collaboration, Tomoya Hirota, Takumi Nagayama +59
We present the first astrometry catalog from the Japanese VLBI (very long baseline interferometer) project VERA (VLBI Exploration of Radio Astrometry). We have compiled all the ast…
Astrometrically registered maps of H2O and SiO masers toward VX Sagittarii
Dong-Hwan Yoon, Se-Hyung Cho, Youngjoo Yun +8
The supergiant VX Sagittarii is a strong emitter of both H2O and SiO masers. However, previous VLBI observations have been performed separately, which makes it difficult to spatial…
Registration of HO and SiO masers in the Calabash Nebula, to confirm the Planetary Nebula paradigm
Richard Dodson, Maria Rioja, Valentin Bujarrabal +4
We report on the astrometric registration of VLBI images of the SiO and water masers in OH231.8+4.2, the iconic Proto-Planetary Nebula also known as the Calabash nebula, using the…
Parallaxes of Star Forming Regions in the Outer Spiral Arm of the Milky Way
K. Hachisuka, Y. K. Choi, M. J. Reid +4
We report parallaxes and proper motions of three water maser sources in high-mass star-forming regions in the Outer Spiral Arm of the Milky Way. The observations were conducted wit…