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Bursting Activity in a High-Mass Star-Forming Region G33.64-0.21 Observed with the 6.7 GHz Methanol Maser
Kenta Fujisawa, Koichiro Sugiyama, Nozomu Aoki +9
We report the detection of bursts of 6.7 GHz methanol maser emission in a high-mass star-forming region, G33.64-0.21. One of the spectral components of the maser in this source cha…
H2O maser motions and the distance of the star forming region G192.16-3.84
Satoshi Shiozaki, Hiroshi Imai, Daniel Tafoya +5
We present the results of astrometic observations of H2O masers associated with the star forming region G192.16-3.84 with the VLBI Exploration of Radio Astrometry (VERA). The H2O m…
Identification of Bursting Water Maser Features in Orion KL
Tomoya Hirota, Masato Tsuboi, Kenta Fujisawa +10
In February 2011, a burst event of the HO maser in Orion KL (Kleinmann-Low object) has started after 13-year silence. This is the third time to detect such phenomena in Orion…
Detection of Two Carbon-Chain-Rich Cores; CB130-3 and L673-SMM4
Tomoya Hirota, Takeshi Sakai, Nami Sakai +1
We have found two dense cores, CB130-3 and L673-SMM4, where the carbon-chain molecules are extremely abundant relative to NH, during a survey observation of radio emission li…
Annual Parallax Measurements of an Infrared Dark Cloud MSXDC G034.43+00.24 with VERA
Tomoharu Kurayama, Akiharu Nakagawa, Satoko Sawada-Satoh +5
We have measured the annual parallax of the H2O maser source associated with an infrared dark cloud MSXDC G034.43+00.24 from the observations with VERA (VLBI Exploration of Radio A…
Astrometry of Star Forming Region IRAS 05137+3919 in the far outer Galaxy
Mareki Honma, Tomoya Hirota, Yukitoshi Kan-ya +4
We present the results of astrometric observations with VERA toward the H2O maser sources in IRAS 05137+3919, which is thought to be located in the far outer Galaxy. We have derive…