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相关论文: Reconstructing the Globular Cluster Initial Mass F…

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We examine various implications from a dynamical and chemical model of globular clusters (GCs), which successfully reproduces the observed abundance patterns and the multiple populations of stars in these systems assuming chemical…

宇宙学与河外天体物理 · 物理学 2015-05-20 Daniel Schaerer , Corinne Charbonnel

We have studied the evolution of globular cluster systems (GCS) in elliptical galaxies with a power-law initial GCS mass function (GCMF) ($f(M) \propto M^{-\alpha}$) similar to that predicted by some theoretical studies of globular clusters…

天体物理学 · 物理学 2008-11-26 E. Vesperini

Observations of young star clusters reveal that the high-mass end of the cluster initial mass function (CIMF) deviates from a pure power-law and instead truncates exponentially. We investigate the effects of this truncation on the formation…

星系天体物理 · 物理学 2019-03-27 Nick Choksi , Oleg Y. Gnedin

We study the evolution of globular cluster systems (GCS) in elliptical galaxies and explore the dependence of their main properties on the mass and the size of the host galaxy.The dependence of the evolution of the GCS mass function (GCMF),…

天体物理学 · 物理学 2008-11-26 E. Vesperini

The initial and present-day mass functions (ICMF and PDMF, respectively) of the Galactic globular clusters (GCs) are constructed based on their observed luminosities, the stellar evolution and dynamical mass-loss processes, and the…

星系天体物理 · 物理学 2015-06-04 Charles Bonatto , Eduardo Bica

We study the dynamical evolution of the M87 globular cluster system (GCS) with a number of numerical simulations. We explore a range of different initial conditions for the GCS mass function (GCMF), for the GCS spatial distribution and for…

天体物理学 · 物理学 2009-11-07 E. Vesperini , S. E. Zepf , A. Kundu , K. M. Ashman

We show that the globular cluster mass function (GCMF) in the Milky Way depends on cluster half-mass density (rho_h) in the sense that the turnover mass M_TO increases with rho_h while the width of the GCMF decreases. We argue that this is…

天体物理学 · 物理学 2010-11-11 Dean E. McLaughlin , S. Michael Fall

We have derived the global mass functions of a sample of 35 Galactic globular clusters by comparing deep Hubble Space Telescope photometry with suitable multimass dynamical models. For a subset of 29 clusters with available radial velocity…

星系天体物理 · 物理学 2017-09-06 Antonio Sollima , Holger Baumgardt

Current observational constraints on the dynamical evolution of star clusters are reviewed. Theory and observations now agree nicely on the mass dependency and time scales for disruption of young star clusters in galactic disks, but many…

天体物理学 · 物理学 2007-05-23 S. S. Larsen

Stellar-mass black holes (BHs) can be retained in globular clusters (GCs) until the present. Simulations of GC evolution find that the relaxation driven mass-loss rate is elevated if BHs are present, especially near dissolution. We capture…

星系天体物理 · 物理学 2023-05-17 Mark Gieles , Oleg Y. Gnedin

We present new constraints on the initial mass spectrum of the Galactic Old Halo globular clusters. This has remained poorly-known so far, as both an initial power-law mass spectrum and an initial lognormal mass function could have evolved…

天体物理学 · 物理学 2009-11-13 Genevieve Parmentier , Gerard Gilmore

We investigate the evolution of the mass function of the Galactic globular cluster system (GCMF) taking into account the effects of stellar evolution, two-body relaxation, disk shocking and dynamical friction on the evolution of individual…

天体物理学 · 物理学 2009-10-30 E. Vesperini

Evolution of the mass function (MF) and radial distribution (RD) of the Galactic globular cluster (GC) system is calculated using an advanced and a realistic Fokker-Planck (FP) model that considers dynamical friction, disc/bulge shocks and…

天体物理学 · 物理学 2009-11-13 Jihye Shin , Sungsoo S. Kim , Koji Takahashi

We use N-body simulations to model the 12 Gyr evolution of a suite of star clusters with identical initial stellar mass functions over a range of initial cluster masses, sizes, and orbits. Our models reproduce the distribution of…

星系天体物理 · 物理学 2015-09-23 Jeremy J. Webb , Nathan W. C. Leigh

Several recent studies have shown that the star cluster initial mass function (CIMF) can be well approximated by a power law, with indications for a steepening or truncation at high masses. This contribution considers the evolution of such…

星系天体物理 · 物理学 2015-05-13 M. Gieles

We calculate the integrated galactic initial stellar mass function (IGIMF) in the presence of IMF variations in clusters. IMF Variations for a population of clusters are taken into account in the form of Gaussian distributions of the IMF…

星系天体物理 · 物理学 2022-10-19 Sami Dib

The initial cluster mass function (ICMF) is a fundamental property of star formation in galaxies. To gauge its universality, we measure and compare the ICMFs in irregular and spiral galaxies. Our sample of irregular galaxies is based on 13…

天体物理学 · 物理学 2009-09-29 Jayce D. Dowell , Brent A. Buckalew , Jonathan C. Tan

The presence of a population of a large number ($\sim$400) of almost coeval (100--300 Myr) super star clusters (SSCs) in the disk of M82 offers an opportunity to construct the Cluster Initial Mass Function (CIMF) from the observed…

We present the results of the analysis of deep photometric data of 32 Galactic globular clusters. We analysed 69 parallel field images observed with the Wide Field Channel of the Advanced Camera for Surveys of the Hubble Space Telescope…

星系天体物理 · 物理学 2020-04-22 H. Ebrahimi , A. Sollima , H. Haghi , H. Baumgardt , M. Hilker

We present a new technique to quantify cluster-to-cluster variations in the observed present-day stellar mass functions of a large sample of star clusters. Our method quantifies these differences as a function of both the stellar mass and…

太阳与恒星天体物理 · 物理学 2012-07-26 Nathan Leigh , Stefan Umbreit , Alison Sills , Christian Knigge , Guido de Marchi , Evert Glebbeek , Ata Sarajedini
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