253 citations · 3.5k across the 90 of their papers we have counts for
90 papers
Ejection Patterns in the DG Tau Jet Over the Last 40 Years: Insights into Mass Accretion Variability
Tae-Soo Pyo, Masahiko Hayashi, Michihiro Takami +1
We aim to clarify the link between mass accretion and ejection by analyzing DG Tau's jet observations from optical and near-infrared data spanning 1984 to 2019, alongside photometr…
An expanding ring of the hypercompact HII region W49N:A2
Ryosuke Miyawaki, Masahiko Hayashi, Tetsuo Hasegawa
We present 250~GHz continuum and H29alpha line data toward W49N:A2, a hypercompact HII region ionized by an O9 star. The data obtained with ALMA at a resolution of ~0"05 (600 au) c…
Direct Imaging and Astrometric Detection of a Gas Giant Planet Orbiting an Accelerating Star
Thayne Currie, G. Mirek Brandt, Timothy D. Brandt +31
Direct imaging of gas giant exoplanets provides key information on planetary atmospheres and the architectures of planetary systems. However, few planets have been detected in blin…
Direct Imaging Discovery and Dynamical Mass of a Substellar Companion Orbiting an Accelerating Hyades Sun-like Star with SCExAO/CHARIS
Masayuki Kuzuhara, Thayne Currie, Takuya Takarada +33
We present the direct-imaging discovery of a substellar companion in orbit around a Sun-like star member of the Hyades open cluster. So far, no other substellar companions have bee…
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…
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…