37 citations · 189 across the 19 of their papers we have counts for
17 papers · 1 filter
Nuclear Stellar Disk-like Nature in the Kinematics of SiO Maser Stars around Sagittarius A*
Masato Tsuboi, Takahiro Tsutsumi, Ryosuke Miyawaki +1
We present a detailed analysis of the kinematics of SiO maser stars around the center of the Milky Way, Sagittarius A* (Sgr A*). We used the archive data in the SiO v=1, J=2-1 emis…
W49N MCN-a: a disk accreting massive protostar embedded in an early-phase hot molecular core
Ryosuke Miyawaki, Masahiko Hayashi, Tetsuo Hasegawa
We present ALMA archival data for 219-235 GHz continuum and line observations toward the hot molecular core (HMC) W49N MCN-a (UCHII region J1) at a resolution of ~0."3. The dust co…
ALMA Astrometry of the Objects within 0.5 pc of Sagittarius A
Masato Tsuboi, Takahiro Tsutsumi, Atsushi Miyazaki +2
Atacama Large Millimeter/Submillimeter Array (ALMA) is promising to be a powerful tool for precision astrometry of the area around Sagittarius A (Sgr A) because it ha…
Star burst in W49N presumably induced by cloud-cloud collision
Ryosuke Miyawaki, Masahiko Hayashi, Tetsuo Hasegawa
We present high resolution observations of CS(J=1-0), H13CO+ (J=1-0), and SiO(v=0:J=1-0) lines, together with the 49GHz and 86GHz continuum emissions, toward W49N carried out with…
Hot Molecular Core Candidates in the Galactic Center 50 km/s Molecular Cloud
Ryosuke Miyawaki, Masato Tsuboi, Kenta Uehara +1
We present the results based on the 2.5 arcsec-resolution observations using Atacama Large Millimeter/submillimeter Array (ALMA) of the Galactic Center Molecular Cloud G-0.02-0.07,…
Cloud-Cloud Collision in the Galactic Center Arc
Masato Tsuboi, Yoshimi Kitamura, Kenta Uehara +4
We performed a search of cloud-cloud collision (CCC) sites in the Sagittarius A molecular cloud (SgrAMC) based on the survey observations using the Nobeyama 45-m telescope in the C…
Where is the Western Part of the Galactic Center Lobe Located really?
Masato Tsuboi, Takahiro Tsutsumi, Yoshimi Kitamura +3
The Galactic Center Lobe (GCL) is a peculiar object widely protruding from the Galactic plane toward the positive Galactic latitude, which had been found toward the Galactic Center…
How far actually is the Galactic Center IRS 13E3 from Sagittarius A?
Masato Tsuboi, Yoshimi Kitamura, Takahiro Tsutsumi +3
The Galactic Center IRS 13E cluster is a very intriguing IR object located at pc from Sagittarius A (Sgr A) in projection distance. There are both argument…
Sub-millimeter Detection of a Galactic Center Cool Star IRS 7 by ALMA
Masato Tsuboi, Yoshimi Kitamura, Takahiro Tsutsumi +3
IRS 7 is an M red supergiant star which is located at north of Sagittarius A. We detected firstly the continuum emission at 340 GHz of IRS 7 using ALMA. The total flu…
G-0.02-0.07, the Compact HII Region Complex nearest to the Galactic Center with ALMA
Masato Tsuboi, Yoshimi Kitamura, Kenta Uehara +4
We have observed the compact HII region complex nearest to the dynamical center of the Galaxy, G-0.02-0.07, using ALMA in the H42a recombination line, CS J=2-1, H13CO+ J=1-0, and S…
Rotating Ionized Gas Ring around the Galactic Center IRS13E3
Masato Tsuboi, Yoshimi Kitamura, Takahiro Tsutsumi +3
We detected a compact ionized gas associated physically with IRS13E3, an Intermediate Mass Black Hole (IMBH) candidate in the Galactic Center, in the continuum emission at 232 GHz…
Molecular Cloud Cores in the Galactic Center 50 Molecular Cloud
Kenta Uehara, Masato Tsuboi, Yoshimi Kitamura +1
The Galactic Center 50 km s Molecular Cloud (50MC) is the most remarkable molecular cloud in the Sagittarius A region. This cloud is a candidate for the massive star formati…
ALMA View of the Circum-nuclear Disk of the Galactic Center; Tidally-disrupted Molecular Clouds falling to the Galactic Center
Masato Tsuboi, Yoshimi Kitamura, Kenta Uehara +4
We present the high angular resolution and high sensitivity images of the "Circum-Nuclear Disk (CND)" and its surrounding region of Milky Way Galaxy in the CS J=2-1, SiO v=0 J=2-1,…
The Second Galactic Center Black Hole?; A Possible Detection of Ionized Gas Orbiting around an IMBH embedded in the Galactic Center IRS13E complex
Masato Tsuboi, Yoshimi Kitamura, Takahiro Tsutsumi +4
The Galactic Center is the nuclear region of the nearest spiral galaxy, Milky Way, and contains the supermassive black hole with M~4x10^6 Msun, Sagittarius A* (Sgr A*). One of basi…
ALMA view of the Galactic Center 50km/s molecular cloud
Kenta Uehara, Masato Tsuboi, Yoshimi Kitamura +2
We have observed the Galactic Center 50km/s molecular cloud (50MC) with ALMA to search for filamentary structures. In the CS J=2-1 emission line channel maps, we succeeded in ident…
Tidally-disrupted Molecular Clouds falling to the Galactic Center
Masato Tsuboi, Yoshimi Kitamura, Kenta Uehara +2
We found a molecular cloud connecting from the outer region to the "Galactic Center Mini-spiral (GCMS)" which is a bundle of the ionized gas streams adjacent to Sgr A*. The molecul…
ALMA View of the Galactic Center Mini-spiral: Ionized Gas Flows around Sagittarius A*
Masato Tsuboi, Yoshimi Kitamura, Kenta Uehara +4
We have performed the observation of the "Galactic Center Mini-spiral(GCMS)" in H42alpha recombination line as a part of the first large-scale mosaic observation in the Sagittarius…