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In about 40% of the Local Group galaxies star clusters have been detected so far, but the census is still incomplete. The properties of these clusters are briefly reviewed, and the impact of galaxy environment on the evolution and survival…

天体物理学 · 物理学 2007-05-23 Eva K. Grebel

High resolution observations with the NIR adaptive optics integral field spectrograph SINFONI at the VLT proved the existence of massive and young nuclear star clusters in the centres of a sample of Seyfert galaxies. With the help of…

宇宙学与河外天体物理 · 物理学 2015-05-14 M. Schartmann , A. Burkert , M. Krause , M. Camenzind , K. Meisenheimer , R. I. Davies

We highlight the impact of cluster-mass-dependent evolutionary rates upon the evolution of the cluster mass function during violent relaxation, that is, while clusters dynamically respond to the expulsion of their residual star-forming gas.…

星系天体物理 · 物理学 2015-06-11 Genevieve Parmentier , Holger Baumgardt

Direct N-body simulations of globular clusters in a realistic Milky Way-like potential are carried out using the code NBODY6 to determine the impact of the host galaxy disk mass and geometry on the survival of star clusters. A relationship…

星系天体物理 · 物理学 2015-06-18 Juan P. Madrid , Jarrod R. Hurley , Marie Martig

We study the evolution of bound pairs of star clusters by means of direct N-body simulations. Our simulations include mass loss by stellar evolution. The initial conditions are selected to mimic the observed binary star cluster NGC 2136 and…

天体物理学 · 物理学 2008-11-26 Simon Portegies Zwart , Stephanie Rusli

The paper presents an analysis of properties of populations of blue stragglers (BSs) in evolving globular clusters, based on numerical simulations done with the MOCCA code for various initial globular clusters conditions. We find that…

星系天体物理 · 物理学 2017-01-18 Arkadiusz Hypki , Mirek Giersz

We review the role of stellar flybys and encounters in shaping planet-forming discs around young stars, based on the published literature on this topic in the last 30 years. Since most stars $\leq~2$ Myr old harbour protoplanetary discs,…

地球与行星天体物理 · 物理学 2022-12-23 Nicolás Cuello , François Ménard , Daniel J. Price

We investigate the properties and evolution of star particles in two simulations of isolated spiral galaxies, and two galaxies from cosmological simulations. Unlike previous numerical work, where typically each star particle represents one…

We examine the changes in the properties of galactic bulges and discs with environment for a volume-limited sample of 12500 nearby galaxies from SDSS. We focus on galaxies with classical bulges. Classical bulges seem to have the same…

宇宙学与河外天体物理 · 物理学 2015-06-11 C. N. Lackner , J. E. Gunn

Stellar clusters are critical constituents within galaxies: they are the result of highest-density star formation, and through their spatially and temporally correlated feedback they regulate their host galaxy evolution. We present a novel…

星系天体物理 · 物理学 2024-08-12 Marta Reina-Campos , Oleg Y. Gnedin , Alison Sills , Hui Li

We perform the largest currently available set of direct N-body calculations of young star cluster models to study the dynamical influence, especially through the ejections of the most massive star in the cluster, on the current relation…

星系天体物理 · 物理学 2015-06-04 Seungkyung Oh , Pavel Kroupa

We study the effects of initial conditions of star clusters and their massive star population on dynamical ejections of massive stars from star clusters up to an age of 3 Myr. We use a large set of direct N-body calculations for moderately…

星系天体物理 · 物理学 2016-05-25 Seungkyung Oh , Pavel Kroupa

Understanding how the birthplace of stars affects planet-forming discs is important for a comprehensive theory of planet formation. Most stars are born in dense star-forming regions where the external influence of other stars, particularly…

星系天体物理 · 物理学 2019-05-15 Megan Reiter , Richard J. Parker

Protoplanetary discs are crucial to understanding how planets form and evolve, but these objects are subject to the vagaries of the birth environments of their host stars. In particular, photoionising radiation from massive stars has been…

地球与行星天体物理 · 物理学 2022-08-31 Bridget Marchington , Richard J. Parker

We investigated the typical environment and physical properties of "red discs" and "blue bulges", comparing those to the "normal" objects in the blue cloud and red sequence. Our sample is composed of cluster members and field galaxies at $z…

星系天体物理 · 物理学 2016-09-14 P. A. A. Lopes , S. B. Rembold , A. L. B. Ribeiro , R. S. Nascimento , B. Vajgel

We review progress in numerical simulations of star cluster formation. These simulations involve the bottom-up assembly of clusters through hierarchical mergers, which produces a fractal stellar distribution at young (~0.5 Myr) ages. The…

星系天体物理 · 物理学 2015-05-14 Cathie Clarke

The impact of radiation pressure on the dynamics of the gas in the vicinity of young stellar clusters is thoroughly discussed. The radiation over the thermal/ram pressure ratio time evolution is calculated explicitely and the crucial role…

星系天体物理 · 物理学 2015-06-12 Sergiy Silich , Guillermo Tenorio-Tagle

This article reviews some recent studies of the mass, age, and space distributions of star clusters, with a primary focus on the large population of clusters in the interacting Antennae galaxies. Some of the highlights of these studies are…

天体物理学 · 物理学 2007-05-23 S. Michael Fall

We review recent work that investigates the formation of stellar clusters, ranging in scale from globular clusters through open clusters to the small scale aggregates of stars observed in T associations. In all cases, recent advances in…

天体物理学 · 物理学 2007-05-23 Cathie J. Clarke , Ian A. Bonnell , Lynne A. Hillenbrand

The classic question that how young massive star clusters attain their shapes and sizes, as we find them today, remains to be a challenge. Both observational and computational studies of star-forming massive molecular gas clouds infer that…

星系天体物理 · 物理学 2016-12-21 Sambaran Banerjee , Pavel Kroupa