Chang-Won Lee

The ALMA-QUARKS Survey. IV. Core Mass Function and Evolutionary Trends in Core Formation Efficiency and Chemistry

Wenyu Jiao, Tie Liu, Dongting Yang +43

The ALMA-QUARKS (Querying Underlying Mechanisms of Massive Star Formation with ALMA-Resolved Gas Kinematics and Structures) survey targets 139 massive protoclusters selected from t…

ALMA Reveals an Explosive Outflow Candidate in IRAS 16119--5048

Yongquan Luo, Jianjun Zhou, Tie Liu +24

We present a multiwavelength study of the massive star formation region IRAS 16119-5048 (I16119) using ALMA ATOMS Band 3 and QUARKS Band 6 observations, complemented by archival AT…

ALOHA IRDCs Molecular Line Follow-up: I. Gas properties and kinematics

Jinjin Xie, Yaoting Yan, Zhiyuan Ren +109

Infrared Dark Clouds are ideal sites for investigating the initial conditions of massive star and cluster formation. The A Lei Of the Habitat and Assembly of Infrared Dark Clouds (…

The ALMA-QUARKS Survey: Properties of Hot Molecular Fragments in the Massive Protocluster IRAS 17233-3606

Li Chen, Sheng-Li Qin, Dongting Yang +29

To investigate the physical mechanisms of fragmentation within the hot molecular core of the massive protocluster IRAS 17233-3606 (G351.78-0.54), we carried out a detailed analysis…

Evolution of starless cores in massive clumps seen by the ALMA ASHES and QUARKS surveys

Dongting Yang, Hong-li Liu, Sheng-li Qin +28

We present a systematic comparative analysis of 324 starless cores in early-phase infrared-dark clouds (IRDCs; ASHES survey) and evolved-phase infrared-bright clouds (IRBCs; QUARKS…

Discovery of a Compact Hub-Filament System in G286.21+0.17 with JWST and ALMA: Insights into Protocluster Formation and Competitive Accretion

L. K. Dewangan, N. K. Bhadari, Ram K. Yadav +17

We present a multi-wavelength study of the massive protocluster G286.21+0.17 (G286) using \emph{JWST} near-infrared (NIR) imaging and ALMA H $^{13}$ CO $^{+}$ (1--0) observations. The…

The ALMA-QUARKS survey: Investigating Thermal Feedback of Massive Protostars in Hot Molecular Cores

Dezhao Meng, Tie Liu, Jarken Esimbek +33

We identify a sample of 83 spatially resolved hot molecular cores (HMCs) in the QUARKS survey, aiming at investigating thermal feedback from massive stars. Using CH $_{3}$ CN\,(12--11)…

ATOMS-QUARKS survey: Inflow and infall in massive protocluster G318.049+00.086: Evidence of competitive accretion

Shivani Gupta, Tapas Baug, Archana Soam +17

We present a gas kinematic study of the massive protocluster G318.049+00.086. The protocluster is reported to contain 12 prestellar core candidates and 4 protostellar cores. Filame…

MAJORS II: HCO+& HCN Abundances in W40

René Plume, David J. Eden, Malcolm J. Currie +34

We present observations of HCN and HCO $^{+}$ J = $3 - 2$ in the central $42 4^{''} \times 42 4^{''}$ region of the W40 massive star forming region. The observations were taken as part of a p…

The ALMA-ATOMS survey: Methanol emission in a large sample of hot molecular cores

Jiahang Zou, Tie Liu, Sheng-Li Qin +26

Methanol (CH $_{3}$ OH) is a key complex organic molecule (COM) in the interstellar medium, widely used as a tracer of dense gas and hot molecular cores (HMCs). Using high-resolution…

The ALMA-ATOMS-QUARKS survey: Resolving a chemically rich massive protostellar outflow

Jia-Hang Zou, Tie Liu, Fengwei Xu +19

We present a comprehensive study on the physical and chemical structures of a chemically rich bipolar outflow in a high-mass star forming region IRAS 16272 $-$ 4837 (SDC335), utilizi…

Detection of a septuple stellar system in formation via disk fragmentation

Shanghuo Li, Henrik Beuther, André Oliva +15

Stellar multiple systems play a pivotal role in cluster dynamics and stellar evolution, leading to intense astronomical phenomena like X-ray binaries, gamma-ray bursts, Type Ia sup…

An S-shaped filament formed due to Cloud-Cloud Collision in molecular cloud G178.28-00.61

Tianwei Zhang, Tie Liu, Yuefang Wu +18

We present compelling observational evidence supporting G178.28-00.61 as an early-stage candidate for Cloud-Cloud Collision (CCC), with indications of the formation of an S-shaped…

Kinematic Study of Molecular Gas in Cometary Globule -- LBN 437

S. Aardra, Namitha Issac, Archana Soam +2

Bright-rimmed, cometary-shaped star-forming globules, associated with HII regions, are remnants of compressed molecular shells exposed to ultraviolet radiation from central OB-type…

The ALMA-ATOMS Survey: Exploring Protostellar Outflows in HC $_{3}$ N

Ariful Hoque, Tapas Baug, Lokesh K. Dewangan +25

We present the first systematic study of bipolar outflows using HC $_{3}$ N as a tracer in a sample of 146 massive star-forming regions from ALMA-ATOMS survey. Protostellar outflows ar…

The ALMA-ATOMS survey: A sample of weak hot core candidates identified through line stacking

Zi-Yang Li, Xunchuan Liu, Tie Liu +33

Hot cores represent critical astrophysical environments for high-mass star formation, distinguished by their rich spectra of organic molecular emission lines. We aim to utilize hig…

astro-ph.GA2025★ 11 cited

ATOMS: ALMA Three-millimeter Observations of massive Star-forming regions -XX. Probability distribution function of integrated intensity for dense molecular gas tracers

C. Zhang, Tie Liu, Sihan Jiao +16

We report the observations of J=1-0 of HCN, HCO+, H13CO+, and H13CN, HC3N (J=11-10) emission towards 135 massive star-forming clumps, as part of the ATOMS (ALMA Three-millimeter Ob…

The ALMA-ATOMS survey: Vibrationally excited HC $_{3}$ N lines in hot cores

Li Chen, Sheng-Li Qin, Tie Liu +26

Interstellar molecules are excellent tools for studying the physical and chemical environments of massive star-forming regions. In particular, vibrationally excited HC $_{3}$ N (HC $_{3}$ …

astro-ph.GA2024★ 2 cited

ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- XIX. The origin of SiO emission

Rong Liu, Tie Liu, Izaskun Jiménez-Serra +23

The production of silicon monoxide (SiO) can be considered as a fingerprint of shock interaction. In this work, we use high-sensitivity observations of the SiO (2-1) and H $^{13}$ CO…

The magnetic field in quiescent star-forming filament G16.96+0.27

Qi-Lao Gu, Tie Liu, Zhi-Qiang Shen +20

We present 850 μm thermal dust polarization observations with a resolution of 14.4"(~ 0.13 pc) towards an infrared dark cloud G16.96+0.27 using JCMT/POL-2. The average magnetic fie…

ATOMS: ALMA three-millimeter observations of massive star-forming regions -- XVIII. On the origin and evolution of dense gas fragments in molecular shells of compact HII regions

Siju Zhang, Tie Liu, Ke Wang +16

Fragmentation and evolution for the molecular shells of the compact HII regions are less explored compared to their evolved counterparts. We map nine compact HII regions with a typ…

The ALMA-QUARKS Survey: Fibers' role in star formation unveiled in an intermediate-mass protocluster region of the Vela D cloud

Dongting Yang, HongLi Liu, Tie Liu +32

In this paper, we present a detailed analysis of the IRS 17 filament within the intermediate-mass protocluster IRAS 08448-4343 (of $\sim 1 0^{3} L_{⊙}$ ), using ALMA data fro…