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Stars do not generally form in isolation. Instead, they form in clusters, and in these clustered environments newborn stars can have profound effects on one another and on their parent gas clouds. Feedback from clustered stars is almost…

We present a systematic investigation of 1,481 Galactic open clusters (OCs) through the application of the Limepy dynamical model, from which we derive the fundamental structural parameters of OCs. We conduct the statistical analyses on the…

Astrophysics of Galaxies · Physics 2025-12-11 Jin-Sheng Qiu , Zhen Wan , Xu-Zhi Li , Qing-Feng Zhu , Lu-lu Fan , Xiao-Hui Xu , Jun-Han Zhao , Zhi-Yong Pu

ALMA observations of the Serpens South star-forming region suggest that stellar protoclusters may be completely mass segregated at birth. Independent observations also suggest that embedded clusters form segregated by mass. As the…

Astrophysics of Galaxies · Physics 2019-06-19 Václav Pavlík , Pavel Kroupa , Ladislav Šubr

Massive stars born in star clusters terminate star cluster formation by ionizing the surrounding gas. This process is considered to be prevalent in young star clusters containing massive stars. The Orion Nebula is an excellent example…

Astrophysics of Galaxies · Physics 2022-06-10 Michiko S. Fujii , Kohei Hattori , Long Wang , Yutaka Hirai , Jun Kumamoto , Yoshito Shimajiri , Takayuki R. Saitoh

(shortened) Direct N-body calculations are presented of the formation of Galactic clusters using GasEx, which is a variant of the code Nbody6. The calculations focus on the possible evolution of the Orion Nebula Cluster (ONC) by assuming…

Astrophysics · Physics 2009-10-31 P. Kroupa , S. J. Aarseth , J. Hurley

In the Gaia era, the membership analysis and parameter determination of open clusters (OCs) are more accurate. We performed a census of OC's classical Cepheids based on Gaia Early Data Release 3 (EDR3) and obtained a sample of 33 OC…

Solar and Stellar Astrophysics · Physics 2021-05-12 Xiaoyue Zhou , Xiaodian Chen

Planets in young star clusters could shed light on planet formation and evolution since star clusters can provide accurate age estimation. However, the number of transiting planets detected in clusters was only $\sim 30$, too small for…

Earth and Planetary Astrophysics · Physics 2023-11-08 Yuan-Zhe Dai , Hui-Gen Liu , Jia-Yi Yang , Ji-Lin Zhou

The spatial decorrelation of dense molecular gas and young stars observed on $\lesssim 1$ kiloparsec scales in nearby galaxies indicates rapid dispersal of star-forming regions by stellar feedback. We explore the sensitivity of this…

Astrophysics of Galaxies · Physics 2021-09-15 Vadim A. Semenov , Andrey V. Kravtsov , Nickolay Y. Gnedin

OB associations, birthplaces of the most luminous stars, are key objects for understanding the formation of high-mass stars and their effects on their environments. The aim of this work is to explore the structure and kinematics of the…

Solar and Stellar Astrophysics · Physics 2023-01-18 Máté Szilágyi , Mária Kun , Péter Ábrahám , Gábor Marton

As groups of coeval stars born from the same molecular cloud, an Open cluster (OC) is an ideal laboratory for studying the structure and dynamical evolution of the Milky Way. The release of High-Precision Gaia Early Data Release 3 (Gaia…

Astrophysics of Galaxies · Physics 2023-05-31 Huanbin Chi , Feng Wang , Zhongmu Li

This study provides a detailed examination of the structural, astrophysical, kinematic, and dynamical properties of the open clusters COIN-Gaia 24, Czernik 24, FSR 0893, and UBC 74, which are located in the direction opposite to the…

Astrophysics of Galaxies · Physics 2026-02-27 Selçuk Bilir , Seval Taşdemir , Ege Eraydın , Deniz Cennet Çınar , Jeison Alfonso , Remziye Canbay

One of the fundamental factors regulating the evolution of galaxies is stellar feedback. However, we still do not have strong observational constraints on the relative importance of the different feedback mechanisms (e.g. radiation, ionised…

A primordial group of open clusters containing NGC 6871 is confirmed and described through Gaia DR3 data and the previous literature. It is a star-forming complex containing at least six young OCs, including Teutsch 8, FSR 198 and Biurakan…

Solar and Stellar Astrophysics · Physics 2023-01-18 Juan Casado , Yasser Hendy

By combining multi-band data from Gaia DR3, MWISP CO, and LAMOST DR11 LSR/MSR, we investigate the co-evolution of stars and their parent molecular cloud in a snake-like stellar structure, named Snake III. Based on 5-D phase-space selection,…

Astrophysics of Galaxies · Physics 2026-04-06 Jia-Peng Li , Hai-Jun Tian , Chen Wang , Xiang-Ming Yang , Fan Wang

(Abridged) The formation and evolution of star cluster populations are related to the galactic environment. Cluster formation is governed by processes acting on galactic scales, and star cluster disruption is driven by the tidal field. In…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 J. M. Diederik Kruijssen , F. Inti Pelupessy , Henny J. G. L. M. Lamers , Simon F. Portegies Zwart , Vincent Icke

Stars which start their lives with spectral types O and early-B are the progenitors of core-collapse supernovae, long gamma-ray bursts, neutron stars, and black holes. These massive stars are the primary sources of stellar feedback in…

Solar and Stellar Astrophysics · Physics 2019-05-22 Varsha Ramachandran , W. -R. Hamann , L. M. Oskinova , J. S. Gallagher , R. Hainich , T. Shenar , A. A. C. Sander , H. Todt , L. Fulmer

We present a large suite of MHD simulations of turbulent, star-forming giant molecular clouds(GMCs) with stellar feedback, extending previous work by simulating 10 different random realizations for each point in the parameter space of cloud…

The OB associations, which are fossil star formation regions, retain the end-products of the star formation process in an open, unobscured environment. Observations of the low mass stars in OB associations provide a far clearer picture of…

Astrophysics · Physics 2007-05-23 F. M. Walter , J. M. Alcala , R. Neuhaeuser , M. Sterzik , S. J. Wolk

We re-evaluate the star formation history of the nearby Sco-Cen OB Association with a comprehensive analysis of Gaia XP spectra of more than 7,800 potential members. New spectral classifications are obtained by fitting individual XP spectra…

Solar and Stellar Astrophysics · Physics 2025-09-25 Min Fang , Gregory J. Herczeg

Context: The Ara OB1a association is a nearby complex in the fourth Galactic quadrant where a number of young/embedded star clusters are projected close to more evolved, intermediate age clusters. It is also rich in interstellar matter, and…

Astrophysics of Galaxies · Physics 2016-08-14 G. Baume , G. Carraro , F. Comeron , G. C. de Elıa
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