Results 91 to 100 of about 106,016 (255)

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

Binary Disruption and Ejected Stars from Hierarchical Star Cluster Assembly

The Astrophysical Journal
We simulate mergers between star clusters embedded within their natal giant molecular cloud. We extract initial conditions from cloud-scale simulations of cluster formation and introduce different prescriptions for primordial binaries.
Claude Cournoyer-Cloutier, Jeremy Karam, Alison Sills, Simon Portegies Zwart, Maite J. C. Wilhelm   +4 more
doaj   +1 more source

Young Star Clusters: Metallicity Tracers in External Galaxies [PDF]

Highlights of Astronomy, 2005
AbstractStar cluster formation is a major mode of star formation in the extreme conditions of interacting galaxies and violent star bursts. These newly-formed clusters are built from recycled gas, pre-enriched to various levels within the interacting galaxies.
Anders, Peter, Fritze-von Alvensleben, Uta, de Grijs, Richard   +2 more
openaire   +3 more sources

Planetary nebula candidates in extragalactic young star clusters [PDF]

Astronomy & Astrophysics, 2006
During an analysis of optical spectra of 80 young star clusters in several nearby spiral galaxies, [O III] and [N II] emission lines were noted in some cases. Three of these emission line sources are identified as likely planetary nebula (PN) candidates and may represent a rare opportunity to study PNe whose progenitor stars are known to be of ...
Larsen, S.S., Richtler, T.
openaire   +4 more sources

Identification of Star Clusters in M31 from PAndAS Images Based on Deep Learning

The Astrophysical Journal Supplement Series
The identification of star clusters holds significant importance in studying galaxy formation and evolution history. However, the task of swiftly and accurately identifying star clusters from vast amounts of photometric images presents an immense ...
Baisong Zhang, Bingqiu Chen, Haibo Yuan, Pinjian Chen, Shoucheng Wang, Lunwei Zhang, Yi Ren, Helong Guo   +7 more
doaj   +1 more source

Centrally concentrated star formation in young clusters

Astronomy & Astrophysics
The study of star cluster evolution necessitates modeling how their density profiles develop from their natal gas distribution. Observational evidence indicates that many star clusters follow a Plummer-like density profile.
Assilkhan Adilkhan, Mac Low Mordecai-Mark, Polak Brooke, Abdikamalov Ernazar, Cournoyer-Cloutier Claude, Lewis Sean C., Kalambay Mukhagali, Otebay Aigerim, Shukirgaliyev Bekdaulet   +8 more
doaj   +1 more source

Dynamics of stellar black holes in young star clusters with different metallicities – II. Black hole–black hole binaries [PDF]

, 2014
In this paper, we study the formation and dynamical evolution of black hole-black hole (BH-BH) binaries in young star clusters (YSCs), by means of N-body simulations. The simulations include metallicity-dependent recipes for stellar evolution and stellar
B. M. Ziosi, M. Mapelli, M. Branchesi, G. Tormen   +3 more
semanticscholar   +1 more source

Rotation in young massive star clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
Hydrodynamical simulations of turbulent molecular clouds show that star clusters form from the hierarchical merger of several sub-clumps. We run smoothed-particle hydrodynamics simulations of turbulence-supported molecular clouds with mass ranging from 1700 to 43000 Msun. We study the kinematic evolution of the main cluster that forms in each cloud. We
openaire   +2 more sources

Lost Sisters Found: TESS and Gaia Reveal a Dissolving Pleiades Complex

The Astrophysical Journal
Most star clusters dissolve into the Galaxy over tens to hundreds of millions of years after they form. While recent Gaia studies have honed our view of cluster dispersal, the exact chronology of which star formation events begat which star cluster ...
Andrew W. Boyle, Luke G. Bouma, Andrew W. Mann   +2 more
doaj   +1 more source

Using Rapid Rotators as Tracers of Multiplicity Statistics as a Function of Stellar Density

The Astrophysical Journal
Recent works have identified that rapidly rotating stars are predominantly binaries with separations of a few to a few tenths of an astronomical unit. This is a crucial range of separation that is often inaccessible to searches of binary stars, providing
Priyanka Cingirikonda, Marina Kounkel, Joseph Mullen   +2 more
doaj   +1 more source