138 citations · 340 across the 20 of their papers we have counts for
20 papers
ALMASOP. A Rotating Feature Rich in Complex Organic Molecules in a Protostellar Core
Shih-Ying Hsu, Chin-Fei Lee, Doug Johnstone +25
Interstellar complex organic molecules (COMs) in solar-like young stellar objects (YSOs), particularly within protostellar disks, are of significant interest due to their potential…
A Spectroastrometric Study of the Low-velocity Wind from DG Tau A
Yu-Ru Chou, Michihiro Takami, Shin-Ping Lai +9
We obtained high spectral resolution spectra ( 2.5 km s) for DG Tau A from 4800 Å to 7500 Å using Subaru High Dispersion Spectrograph (HDS) for the first time. Th…
Multiple Components of the Outflow in the Protostellar System HH 212: Outer Outflow Shell, Rotating Wind, Shocked Wind, and Jet
J. A. López-Vázquez, Chin-Fei Lee, Hsien Shang +8
We present the Atacama Large Millimeter/submillimeter Array Band 7 observations of the CO (J=3-2) line emission of the protostellar system HH 212 at 24 au spatial resolution…
ALMASOP. The Localized and Chemically rich Features near the Bases of the Protostellar Jet in HOPS 87
Shih-Ying Hsu, Chin-Fei Lee, Sheng-Yuan Liu +24
HOPS 87 is a Class 0 protostellar core known to harbor an extremely young bipolar outflow and a hot corino. We report the discovery of localized, chemically rich regions near the b…
A Unified Model for Bipolar Outflows from Young Stars: Kinematic and Mixing Structures in HH 30
Tsung-Han Ai, Chun-Fan Liu, Hsien Shang +2
The young stellar source HH 30 is a textbook example of an ionic optical jet originating from a disk in an edge-on system shown by the HST. It has a remnant envelope in CO o…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): The Warm-Envelope Origin of Hot Corinos
Shih-Ying Hsu, Sheng-Yuan Liu, Doug Johnstone +24
Hot corinos are of great interest due to their richness in interstellar complex organic molecules (COMs) and the consequent potential prebiotic connection to solar-like planetary s…
A Unified Model for Bipolar Outflows from Young Stars: Apparent Magnetic Jet Acceleration
Hsien Shang, Ruben Krasnopolsky, Chun-Fan Liu
We explore a new, efficient mechanism that can power toroidally magnetized jets up to two to three times their original terminal velocity after they enter a self-similar phase of m…
A Unified Model for Bipolar Outflows from Young Stars: Kinematic Signatures of Jets, Winds, and Their Magnetic Interplay with the Ambient Toroids
Hsien Shang, Chun-Fan Liu, Ruben Krasnopolsky +1
Kinematic signatures of the jet, winds, multicavities, and episodic shells arising in the unified model of bipolar outflows developed in Shang et al.\ (2020), in which an outflow f…
Time-Variable Jet Ejections from RW Aur A, RY Tau and DG Tau
Michihiro Takami, Hans Moritz Guenther, P. Christian Schneider +17
We present Gemini-NIFS, VLT-SINFONI and Keck-OSIRIS observations of near-infrared [Fe II] emission associated with the well-studied jets from three active T Tauri stars; RW Aur A,…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Deriving Inclination Angle and Velocity of the Protostellar Jets from their SiO Knots
Kai-Syun Jhan, Chin-Fei Lee, Doug Johnstone +23
We have selected six sources (G209.55-19.68S2, G205.46-14.56S1A, G203.21-11.20W2, G191.90-11.21S, G205.46-14.56S3, and G206.93-16.61W2) from the Atacama Large Millimeter/subm…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): A Hot Corino Survey toward Protostellar Cores in the Orion Cloud
Shih-Ying Hsu, Sheng-Yuan Liu, Tie Liu +25
The presence of complex organic molecules (COMs) in the interstellar medium (ISM) is of great interest since it may link to the origin and prevalence of life in the universe. Aimin…
Detection of a dense SiO jet in the evolved protostellar phase
Somnath Dutta, Chin-Fei Lee, Doug Johnstone +25
Jets and outflows trace the accretion history of protostars. High-velocity molecular jets have been observed from several protostars in the early Class\,0 phase of star formation,…
Revealing Ionization Conditions of Sz 102 with Spatially Resolved [Ne III] Microjets
Chun-Fan Liu, Hsien Shang, Gregory J. Herczeg +1
Forbidden neon emission lines from small-scale microjets can probe high-energy processes in low-mass young stellar systems. We obtained spatially resolved [Ne III] spectra of the m…
Possible Time Correlation Between Jet Ejection and Mass Accretion for RW Aur A
Michihiro Takami, Tracy L. Beck, P. Christian Schneider +17
For the active T-Taur star RW Aur A we have performed long-term (~10 yr) monitoring observations of (1) jet imaging in the [Fe II] 1.644-micron emission line using Gemini-NIFS and…
Placing the spotted T Tauri star LkCa 4 on an HR diagram
Michael A. Gully-Santiago, Gregory J. Herczeg, Ian Czekala +12
Ages and masses of young stars are often estimated by comparing their luminosities and effective temperatures to pre-main sequence stellar evolution tracks, but magnetic fields and…
The [Ne III] Jet of DG Tau and its Ionization Scenarios
Chun-Fan Liu, Hsien Shang, Gregory J. Herczeg +1
Forbidden neon emission from jets of low-mass young stars can be used to probe the underlying high-energy processes in these systems. We analyze spectra of the jet of DG Tau obtain…
Velocity-Resolved [Ne III] from X-Ray Irradiated Sz 102 Microjets
Chun-Fan Liu, Hsien Shang, Frederick M. Walter +1
Neon emission lines are good indicators of high-excitation regions close to a young stellar system because of their high ionization potentials and large critical densities. We have…
RW Aur A from the X-Wind Point of View: General Features
Chun-Fan Liu, Hsien Shang
In this paper, the RW Aur A microjet is studied from the point of view of X-wind models. The archived HST/STIS spectra of optical forbidden lines [O I], [S II], and [N II] from RW…
Is FS Tau B Driving an Asymmetric Jet?
Chun-Fan Liu, Hsien Shang, Tae-Soo Pyo +6
FS Tau B is one of the few T Tauri stars that possess a jet and a counterjet as well as an optically-visible cavity wall. We obtained images and spectra of its jet-cavity system in…
Fine-Structure Line Emission from the Outflows of Young Stellar Objects
Hsien Shang, Alfred Glassgold, Wei-Chieh Lin +1
The flux and line shape of the fine-structure transitions of \NeII\ and \NeIII\ at 12.8 and 15.55\,m and of the forbidden transitions of \OI\ are calculated for yo…