1.1k citations · 6.8k across the 150 of their papers we have counts for
5 papers · 1 filter
Astrometry of HO masers in the massive star--forming region IRAS 06061+2151 with VERA
Kotaro Niinuma, Takumi Nagayama, Tomoya Hirota +8
We measured the trigonometric annual parallax of HO maser source associated with the massive star-forming regions IRAS 06061+2151 with VERA. The annual parallax of $0.496\pm0.0…
Depletion of CCS in a Candidate Warm-Carbon-Chain-Chemistry Source L483
Tomoya Hirota, Nami Sakai, Satoshi Yamamoto
We have carried out an observation of the CCS (=21) line with the Very Large Array in its D-configuration toward a protostellar core L483 (IRAS~181400440). T…
Astrometry of HO Masers in Nearby Star-Forming Regions with VERA --- IV. L1448C
Tomoya Hirota, Mareki Honma, Hiroshi Imai +4
We have carried out multi-epoch VLBI observations with VERA (VLBI Exploration of Radio Astrometry) of the 22~GHz HO masers associated with a Class 0 protostar L1448C in the P…
VLBI Monitoring of 3C 84 (NGC 1275) in Early Phase of the 2005 Outburst
Hiroshi Nagai, Kenta Suzuki, Keiichi Asada +11
Multi-epoch Very Long Baseline Interferometry (VLBI) study of the sub-pc scale jet of 3C 84 is presented. We carried out 14-epoch VLBI observations during 2006-2009 with the Japane…
Distance to G14.33-0.64 in the Sagittarius Spiral Arm: H2O Maser Trigonometric Parallax with VERA
Mayumi Sato, Tomoya Hirota, Mark J. Reid +5
We report on trigonometric parallax measurements for the Galactic star forming region G14.33-0.64 toward the Sagittarius spiral arm. We conducted multi-epoch phase-referencing obse…