44 citations
- National Astronomical Observatory of JapanJP7 papers
- Kagoshima UniversityJP6 papers
- The Graduate University for Advanced Studies, SOKENDAIJP5 papers
- Korea Astronomy and Space Science InstituteKR3 papers
- Shanghai Astronomical ObservatoryCN3 papers
- Kyung Hee UniversityKR2 papers
- University of MichiganUS2 papers
- Yamaguchi UniversityJP2 papers
- Hokkaido UniversityJP1 paper
- Ibaraki UniversityJP1 paper
- Institute of Space and Astronautical ScienceJP1 paper
- Istituto di Radioastronomia di BolognaIT1 paper
7 papers
Vertical Structure and Kinematics of the Galactic Outer Disk
Nobuyuki Sakai, Takumi Nagayama, Hiroyuki Nakanishi +7
We report measurements of parallax and proper motion for four 22 GHz water maser sources as part of VERA Outer Rotation Curve project. All sources show Galactic latitudes of 2$…
Parallax of a Mira variable R Ursae Majoris studied with astrometric VLBI
Akiharu Nakagawa, Tomoharu Kurayama, Makoto Matsui +5
We have measured an annual parallax of the Mira variable R~Ursae~Majoris (R~UMa) with the VLBI exploration for Radio Astronomy (VERA). From the monitoring VLBI observations spannin…
Outer Rotation Curve of the Galaxy with VERA III: Astrometry of IRAS 07427-2400 and Test of the Density-Wave Theory
Nobuyuki Sakai, Hiroyuki Nakanishi, Mitsuhiro Matsuo +6
We report the trigonometric parallax of IRAS 07427-2400 with VERA to be 0.185 0.027 mas, corresponding to a distance of 5.41 kpc. The result is consistent w…
Outer Rotation Curve of the Galaxy with VERA II: Annual Parallax and Proper Motion of the Star-Forming Region IRAS21379+5106
Hiroyuki Nakanishi, Nobuyuki Sakai, Tomoharu Kurayama +7
We conducted astrometric VLBI observations of water-vapor maser emission in the massive star forming region IRAS 21379+5106 to measure the annual parallax and proper motion, using…
VLBI observations of bright AGN jets with KVN and VERA Array (KaVA): Evaluation of Imaging Capability
Kotaro Niinuma, Sang-Sung Lee, Motoki Kino +69
The Korean very-long-baseline interferometry (VLBI) network (KVN) and VLBI Exploration of Radio Astrometry (VERA) Array (KaVA) is the first international VLBI array dedicated to hi…
Trigonometric Parallax of IRAS 22555+6213 with VERA: 3-Dimensional View of Sources Along the Same Line of Sight
James O. Chibueze, Hirofumi Sakanoue, Takumi Nagayama +11
We report the results of the measurement of the trigonometric parallax of an HO maser source in \r22 with the VLBI Exploration of Radio Astrometry (VERA). The annual parallax w…