11 citations · 13 across the 15 of their papers we have counts for
15 papers
Origin of open clusters revealed by the evolution of the m_maxM_ecl relation
J. W. Zhou, Sami Dib, Pavel Kroupa
Using the Gaia DR3 open cluster catalog, we identified the most massive star in each observed cluster. Examining the m_maxM_cluster relations across different age ranges, we fin…
Early Stages of Protostellar Disk Evolution: A Link to the Initial Cloud Core
Majd Noel, Rahul Khanna, Shahram Abbassi +2
We study the structure and evolution of the very early protostellar disk (``protodisk'') just after protostar formation, where disk self-gravity dominates and the stellar contribut…
Connecting Star Formation in the Milky Way and Nearby Galaxies -II. An Observationally Driven Analytical Model for Predicting Cloud-Scale Star Formation Rates
J. W. Zhou, Amelie Saintonge, Sami Dib +1
We construct a model by integrating observational constraints from the Milky Way and nearby galaxies to predict cloud-scale star formation rates (SFRs). In the model, we first esti…
Connecting Star Formation in the Milky Way and Nearby Galaxies. I. Comparability of Molecular Cloud Physical Properties
J. W. Zhou, Sami Dib
We used CO (2-1) and CO (1-0) data cubes to identify molecular clouds and study their kinematics and dynamics in three nearby galaxies and the inner Milky Way. When observed at sim…
Inversely synthesizing the core mass function of high-mass star-forming regions from the canonical initial mass function
J. W. Zhou, Pavel Kroupa, Sami Dib
Many studies have revealed that the core mass function (CMF) in high-mass star-forming regions is top-heavy. In this work, we start from the canonical initial mass function (IMF) t…
An examination of large-scale galactic effects on molecular cloud properties in NGC 628 : The significant impact of tidal effects from neighboring material on the evolution of molecular clouds
J. W. Zhou, Sami Dib
The physical factors that influence the development of molecular cloud's density contrast are connected to those that affect star formation in the galaxy. For NGC 628 (M74), the pr…
The post-gas expulsion coalescence of embedded clusters as an origin of open clusters
J. W. Zhou, Sami Dib, Pavel Kroupa
The mismatch between the mass function of the Milky Way's embedded clusters (ECs) and that of open clusters (OCs) raises the question of whether each OC originates from a single EC…
The currently observed clumps cannot be the "direct" precursors of the currently observed open clusters
J. W. Zhou, Sami Dib, Pavel Kroupa
We categorized clumps, embedded clusters, and open clusters and conducted a comparative analysis of their physical properties. Overall, the radii of open clusters are significantly…
Molecular clouds as hubs in spiral galaxies : gas inflow and evolutionary sequence
J. W. Zhou, Sami Dib, Timothy A. Davis
We decomposed the molecular gas in the spiral galaxy NGC 628 (M74) into multi-scale hub-filament structures using the CO (2-1) line by the dendrogram algorithm. All leaf structures…
The star formation histories, star formation efficiencies and ionizing sources of ATLASGAL clumps with HII regions
J. W. Zhou, Sami Dib, Pavel Kroupa
1226 ATLASGAL clumps with HII regions were matched with radio sources in the CORNISH-North/South surveys, and 392 of them have corresponding radio sources. We determined the stella…
Physical properties of embedded clusters in ATLASGAL clumps with HII regions
J. W. Zhou, Pavel Kroupa, Sami Dib
Using the optimal sampling model, we synthesized the embedded clusters of ATLASGAL clumps with HII regions (HII-clumps). The 0.1 Myr isochrone was used to estimate the bolometric l…
Self-similar cluster structures in massive star-forming regions: Isolated evolution from clumps to embedded clusters
J. W. Zhou, Pavel Kroupa, Sami Dib
We used the dendrogram algorithm to decompose the surface density distributions of stars into hierarchical structures. These structures were tied to the multiscale structures of st…
Gas inflows from cloud to core scales in G332.83-0.55: Hierarchical hub-filament structures and tide-regulated gravitational collapse
J. W. Zhou, S. Dib, M. Juvela +4
The massive star-forming region G332.83-0.55 contains at least two levels of hub-filament structures. The hub-filament structures may form through the "gravitational focusing" proc…
Feedback from protoclusters does not significantly change the kinematic properties of the embedded dense gas structures
J. W. Zhou, S. Dib, F. Wyrowski +11
A total of 64 ATOMS sources at different evolutionary stages were selected to investigate the kinematics and dynamics of gas structures under feedback. We identified dense gas stru…
OGLE-2018-BLG-0022: A Nearby M-dwarf Binary
R. A. Street, E. Bachelet, Y. Tsapras +28
We report observations of the binary microlensing event OGLE-2018-BLG-0022, provided by the ROME/REA Survey, which indicate that the lens is a low-mass binary star consisting of M3…