204 citations · 652 across the 18 of their papers we have counts for
18 papers
Unveiling Central ortho-H2D+ Depletion at Sub-kau Scales in Prestellar Core G205.46-14.56M3: The First Interferometric Evidence and Implications for Deuterium Chemistry
Sheng-Jun Lin, Sheng-Yuan Liu, Dipen Sahu +8
Prestellar cores represent the initial conditions of star formation, but heavy molecules such as CO are strongly depleted in their cold, dense interiors, limiting the ability to pr…
Chemical Differentiation around Five Massive Protostars Revealed by ALMA -Carbon-Chain Species, Oxygen-/Nitrogen-Bearing Complex Organic Molecules-
Kotomi Taniguchi, Liton Majumdar, Paola Caselli +9
We present Atacama Large Millimeter/submillimeter Array Band 3 data toward five massive young stellar objects (MYSOs), and investigate relationships between unsaturated carbon-chai…
PRODIGE -- Envelope to Disk with NOEMA II. Small-scale temperature structure and a streamer feeding the SVS13A protobinary using CH3CN and DCN
T. -H. Hsieh, D. M. Segura-Cox, J. E. Pineda +18
Aims. We present high sensitivity and high-spectral resolution NOEMA observations of the Class 0/I binary system SVS13A, composed of the low-mass protostars VLA4A and VLA4B with a…
Modeling snowline locations in protostars: The impact of the structure of protostellar cloud cores
Nadia M. Murillo, Tien-Hao Hsieh, Catherine Walsh
Abridged Context: Snowlines during star and disk formation are responsible for a range of effects during the evolution of protostars, such as setting the chemical composition of th…
Imaging the water snowline around protostars with water and HCO isotopologues
Merel L. R. van 't Hoff, Daniel Harsono, Martijn L. van Gelder +7
The water snowline location in protostellar envelopes provides crucial information about the thermal structure and the mass accretion process as it can inform about the occurrence…
Gravitational time delay effects by Kerr and Kerr-Newman black holes in strong field limits
Tien Hsieh, Da-Shin Lee, Chi-Yong Lin
We study the time delay between two relativistic images due to strong gravitational lensing of the light rays caused by the Kerr and Kerr-Newman black holes. The trajectories of th…
K-band High-Resolution Spectroscopy of Embedded Massive Protostars
Tien-Hao Hsieh, Michihiro Takami, Michael S. Connelley +7
A classical paradox in high-mass star formation is that powerful radiation pressure can halt accretion, preventing further growth of a central star. Disk accretion has been propose…
Strong gravitational lensing by Kerr and Kerr-Newman black holes
Tien Hsieh, Da-Shin Lee, Chi-Yong Lin
We study the strong gravitational lensing due to the Kerr black holes with angular momentum and the Kerr-Newman black holes with additional charge . We first derive the anal…
Multi-epoch SMA observations of the L1448C(N) protostellar SiO jet
Tomohiro Yoshida, Tien-Hao Hsieh, Naomi Hirano +1
L1448C(N) is a young protostar in Perseus, driving an outflow and an extremely high-velocity (EHV) molecular jet. We present multi-epoch observations of SiO , CO …
Dust masses of young disks: constraining the initial solid reservoir for planet formation
Łukasz Tychoniec, Carlo F. Manara, Giovanni P. Rosotti +7
In recent years evidence has been building that planet formation starts early, in the first 0.5 Myr. Studying the dust masses available in young disks enables understanding…
An ALMA Study of the FU-Ori Type Object V900 Mon: Implications for the Progenitor
Michihiro Takami, Tsu-Sheng Chen, Hauyu Baobab Liu +13
We present ALMA observations of 12CO, 13CO, and C18O J=2--1 lines and the 230 GHz continuum for the FU Ori-type object (FUor) V900 Mon (d~1.5 kpc), for which the accretion burst wa…
Chronology of Episodic Accretion in Protostars -- an ALMA survey of the CO and HO snowlines
Tien-Hao Hsieh, Nadia M. Murillo, Arnaud Belloche +6
Episodic accretion has been used to explain the wide range of protostellar luminosities, but its origin and influence on the star forming process are not yet fully understood. We p…
ALMA observations of the protostellar disk around the VeLLO IRAS 16253-2429
Tien-Hao Hsieh, Naomi Hirano, Arnaud Belloche +3
We present ALMA long-baseline observations toward the Class 0 protostar IRAS 16253-2429 (hereafter IRAS 16253) with a resolution down to 0.12" (~15 au). The 1.3 mm dust continuum e…
Probing Episodic Accretion in Very Low Luminosity Objects
Tien-Hao Hsieh, Nadia M. Murillo, Arnaud Belloche +4
Episodic accretion has been proposed as a solution to the long-standing luminosity problem in star formation; however, the process remains poorly understood. We present observation…
Widening of Protostellar Outflows: an Infrared Outflow Survey in Low Luminosity Objects
Tien-Hao Hsieh, Shih-Ping Lai, Arnaud Belloche
We present an outflow survey toward 20 Low Luminosity Objects (LLOs), namely protostars with an internal luminosity lower than 0.2 Lsun. Although a number of studies have reported…
IRAS 16253-2429: the First Proto-Brown Dwarf Binary Candidate Identified through Dynamics of Jets
Tien-Hao Hsieh, Shih-Ping Lai, Arnaud Belloche +1
The formation mechanism of brown dwarfs (BDs) is one of the long-standing problems in star formation because the typical Jeans mass in molecular clouds is too large to form these s…
Properties of the Molecular Cores of Low Luminosity Objects
Tien-Hao Hsieh, Shih-Ping Lai, Arnaud Belloche +2
We present a survey toward 16 Low Luminosity Objects (LLOs with an internal luminosity, Lint, lower than 0.2 Lsun) with N2H+ (1-0), N2H+ (3-2), N2D+ (3-2), HCO+ (3-2) and HCN (3-2)…
Populations of Young Stellar Objects in Nearby Molecular Clouds
Tien-Hao Hsieh, Shih-Ping Lai
We develop a new method to identify YSOs from star-forming regions using the photometry data from Spitzer's c2d Legacy Project. The aim is to obtain YSO lists as complete as possib…