Results 21 to 30 of about 17,995 (289)

The fate of discs around massive stars in young clusters [PDF]

Astronomy & Astrophysics, 2006
AIMS: The aim of this work is to understand whether there is a difference in the dispersion of discs around stars in high-density young stellar clusters like the Orion Nebula Cluster (ONC) according to the mass of the star. METHODS: Two types of simulations were combined -- N-body simulations of the dynamics of the stars in the ONC and mass loss ...
Pfalzner, S., Olczak, C., Eckart, A.
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The early evolution of young massive clusters [PDF]

Massive stars are predominantly born in stellar associations or clusters. Their radiation fields, stellar winds, and eventual supernovae have a strong impact on their local surroundings. A significant fraction of massive stars are observed to be so-called runaway stars, which travel through the galaxy at high speed.
Derkink, A., A. Derkink, L. Kaper, Rogers, C., D. Guo, M. Stoop, Azatyan, N., Guo, D., Stoop, M., C. Rogers, Kaper, L., N. Azatyan, M. C. Ramírez-Tannus, de Koter, A., A. de Koter, Ramírez-Tannus, M.C.   +15 more
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PHANGS–JWST First Results: Massive Young Star Clusters and New Insights from JWST Observations of NGC 1365

The Astrophysical Journal Letters, 2023
A primary new capability of JWST is the ability to penetrate the dust in star-forming galaxies to identify and study the properties of young star clusters that remain embedded in dust and gas. In this Letter we combine new infrared images taken with JWST
Bradley C. Whitmore, Rupali Chandar, M. Jimena Rodríguez, Janice C. Lee, Eric Emsellem, Matthew Floyd, Hwihyun Kim, J. M. Diederik Kruijssen, Angus Mok, Mattia C. Sormani, Médéric Boquien, Daniel A. Dale, Christopher M. Faesi, Kiana F. Henny, Stephen Hannon, David A. Thilker, Richard L. White, Ashley T. Barnes, F. Bigiel, Mélanie Chevance, Jonathan D. Henshaw, Ralf S. Klessen, Adam K. Leroy, Daizhong Liu, Daniel Maschmann, Sharon E. Meidt, Erik Rosolowsky, Eva Schinnerer, Jiayi Sun, Elizabeth J. Watkins, Thomas G. Williams   +30 more
doaj   +1 more source

A Tale of Three Dwarfs: No Extreme Cluster Formation in Extreme Star-forming Galaxies

The Astrophysical Journal, 2023
Nearly all current simulations predict that outcomes of the star formation process, such as the fraction of stars that form in bound clusters (Γ), depend on the intensity of star formation activity (Σ _SFR ) in the host galaxy.
Rupali Chandar, Miranda Caputo, Angus Mok, Sean Linden, Bradley C. Whitmore, Aimee Toscano, Jaidyn Conyer, David O. Cook, Janice C. Lee, Leonardo Ubeda, Richard White   +10 more
doaj   +1 more source

RELICS: Small-scale Star Formation in Lensed Galaxies at z = 6–10

The Astrophysical Journal, 2023
Detailed observations of star-forming galaxies at high redshift are critical to understanding the formation and evolution of the earliest galaxies. Gravitational lensing provides an important boost, allowing observations at physical scales unreachable in
Brian Welch, Dan Coe, Adi Zitrin, Jose M. Diego, Rogier Windhorst, Nir Mandelker, Eros Vanzella, Swara Ravindranath, Erik Zackrisson, Michael Florian, Larry Bradley, Keren Sharon, Maruša Bradač, Jane Rigby, Brenda Frye, Seiji Fujimoto   +15 more
doaj   +1 more source

Early-forming Massive Stars Suppress Star Formation and Hierarchical Cluster Assembly

The Astrophysical Journal, 2023
Feedback from massive stars plays an important role in the formation of star clusters. Whether a very massive star is born early or late in the cluster formation timeline has profound implications for the star cluster formation and assembly processes. We
Sean C. Lewis, Stephen L. W. McMillan, Mordecai-Mark Mac Low, Claude Cournoyer-Cloutier, Brooke Polak, Martijn J. C. Wilhelm, Aaron Tran, Alison Sills, Simon Portegies Zwart, Ralf S. Klessen, Joshua E. Wall   +10 more
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HOW TO FIND YOUNG MASSIVE CLUSTER PROGENITORS [PDF]

The Astrophysical Journal, 2012
We propose that bound, young massive stellar clusters form from dense clouds that have escape speeds greater than the sound speed in photo-ionized gas. In these clumps, radiative feedback in the form of gas ionization is bottled up, enabling star formation to proceed to sufficiently high efficiency so that the resulting star cluster remains bound even ...
Bressert E, Ginsburg A, Bally J, Battersby C, Longmore S, Testi L   +5 more
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THE EVOLUTIONARY TRACKS OF YOUNG MASSIVE STAR CLUSTERS [PDF]

The Astrophysical Journal, 2014
Stars mostly form in groups consisting of a few dozen to several ten thousand members. For 30 years, theoretical models provide a basic concept of how such star clusters form and develop: they originate from the gas and dust of collapsing molecular clouds.
S. Pfalzner, G. Parmentier, M. Steinhausen, K. Vincke, K. Menten   +4 more
openaire   +2 more sources

Variability of young massive stars in the Arches cluster [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractWe present preliminary results of the first near-infrared variability study of the Arches cluster, using adaptive optics data from NIRI/Gemini and NACO/VLT. The goal is to discover eclipsing binaries in this young (2.5 ± 0.5 Myr), dense, massive cluster for which we will determine accurate fundamental parameters with subsequent spectroscopy ...
Markakis, K.; Bonanos, A. Z.; Pietrzynski, G.; Macri, L.; Stanek, K. Z.   +5 more
openaire   +3 more sources

X3: A High-mass Young Stellar Object Close to the Supermassive Black Hole Sgr A*

The Astrophysical Journal, 2023
To date, the proposed observation of young stellar objects (YSOs) in the Galactic center still raises the question of where and how these objects could have formed due to the violent vicinity of Sgr A*.
Florian Peißker, Michal Zajaček, Nadeen B. Sabha, Masato Tsuboi, Jihane Moultaka, Lucas Labadie, Andreas Eckart, Vladimír Karas, Lukas Steiniger, Matthias Subroweit, Anjana Suresh, Maria Melamed, Yann Clénet   +12 more
doaj   +1 more source