261 citations · 3.3k across the 93 of their papers we have counts for
11 papers · 1 filter
Fundamental Parameters of the Milky Way Galaxy Based on VLBI astrometry
Mareki Honma, Takumi Nagayama, Kazuma Ando +31
We present analyses to determine the fundamental parameters of the Galaxy based on VLBI astrometry of 52 Galactic maser sources obtained with VERA, VLBA and EVN. We model the Galax…
Multipolar Planetary Nebulae: Not as Geometrically Diversified as Thought
Sze-Ning Chong, Sun Kwok, Hiroshi Imai +2
Planetary nebulae (PNe) have diverse morphological shapes, including point-symmetric and multipolar structures. Many PNe also have complicated internal structures such as torus, lo…
Pilot VLBI Survey of SiO v=3 J=1--0 Maser Emission around Evolved Stars
Hiroshi Imai, Miyako Oyadomari, Sze Ning Chong +9
In this Letter, we report detections of SiO v=3 J=1--0 maser emission in very long baseline interferometric (VLBI) observations towards 4 out of 12 long-period variable stars: WX P…
Annual Parallax Distance and Secular Motion of the Water Fountain Source IRAS 18286-0959
Hiroshi Imai, Tomoharu Kurayama, Mareki Honma +1
We report on results of astrometric observations of water vapor masers in the "water fountain" source IRAS 18286-0959 (I18286) with the VLBI Exploration of Radio Astrometry (VERA).…
Annual Parallax Distance to the K-type star system IRAS 22480+6002 measured with VERA
Hiroshi Imai, Nobuyuki Sakai, Hiroyuki Nakanishi +3
We present the astrometric VLBI observations of water masers associated with IRAS 22480+6002 (IRC+60370, hereafter I22480) with the VLBI Exploration of Radio Astrometry (VERA). The…
GASKAP -- The Galactic ASKAP Survey
J. M. Dickey, N. McClure-Griffiths, S. J. Gibson +55
A survey of the Milky Way disk and the Magellanic System at the wavelengths of the 21-cm atomic hydrogen (HI) line and three 18-cm lines of the OH molecule will be carried out with…