Results 31 to 40 of about 102,398 (346)
r-process Abundance Patterns in the Globular Cluster M92
The Astrophysical Journal, 2023 Whereas light-element abundance variations are a hallmark of globular clusters, there is little evidence for variations in neutron-capture elements. A significant exception is M15, which shows a star-to-star dispersion in neutron-capture abundances of at
Evan N. Kirby +2 more
doaj +1 more source
Gravitational Radiation from Black Hole Binaries in Globular Clusters [PDF]
, 2001 A populations of stellar mass black hole binaries may exist in globular clusters. The dynamics of globular cluster evolution imply that there may be at most one black hole binary is a globular cluster.
Benacquista M J +3 more
core +3 more sources
The age of globular clusters [PDF]
Physics Reports, 2000 latex (using elsart macro for Physics Reports), 16 pages including 4 figures.
openaire +4 more sources
Diffusion and Mixing in Globular Clusters [PDF]
The Astrophysical Journal, 2018 Abstract Collisional relaxation describes the stochastic process with which a self-gravitating system near equilibrium evolves in phase-space due to the fluctuating gravitational field of the system. The characteristic timescale of this process is called the relaxation time. In this paper, we highlight the difference between two measures
Yohai Meiron, Bence Kocsis
openaire +5 more sources
Dynamical Friction in dE Globular Cluster Systems [PDF]
, 2001 The dynamical friction timescale for globular clusters to sink to the center of a dwarf elliptical galaxy (dE) is significantly less than a Hubble time if the halos have King-model or isothermal profiles and the globular clusters formed with the same ...
Bender R. +15 more
core +2 more sources
The Origin of Globular Clusters [PDF]
Symposium - International Astronomical Union, 1988 The purpose of this article is to review some recent attempts to understand the origin of globular clusters. To put this in perspective, it may help to recall the analogous problem of the origin of galaxies. This splits into two parts. First, given a proto-galaxy with a specified mass and radius, how does it collapse, form stars and settle into a state
S. Michael Fall, Martin J. Rees
openaire +3 more sources
The Origin of the Large Magellanic Cloud Globular Cluster NGC 2005
The Astronomical Journal, 2023 The ancient Large Magellanic Cloud (LMC) globular cluster NGC 2005 has recently been reported to have an ex situ origin, thus, setting precedents that the LMC could have partially formed from smaller merged dwarf galaxies.
Andrés E. Piatti, Yutaka Hirai
doaj +1 more source
Globular Cluster Population of Hickson Compact Group 22a and 90c
, 2001 We present the first measurement of the globular cluster populations of galaxies in Hickson compact groups, in order to investigate the effect of these high density environments on the formation and evolution of globular cluster systems. Based on V and R
Barnes J. +9 more
core +2 more sources
Motions of Globular Clusters [PDF]
Symposium - International Astronomical Union, 1995 Absolute proper motions of seven globular clusters have been determined with respect to extragalactic references and with accuracies of ∼ 1 mas/yr. Derived quantities and qualitative implications are described.
M. Geffert +3 more
openaire +2 more sources
Comparing Globular Cluster System Properties with Host Galaxy Environment
The Astrophysical Journal, 2023 We present Hubble Space Telescope photometry in the optical (F475X) and near-infrared (F110W) bands of the globular cluster (GC) systems of the inner halos of a sample of 15 massive elliptical galaxies.
Kate Hartman +4 more
doaj +1 more source