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IMAGE RELEASE:Shocking Results of Galaxy-Cluster Collisions（图）
Shocking Results Galaxy-Cluster Collisions
2017/11/23
A giant collision of several galaxy clusters, each containing hundreds of galaxies, has produced this spectacular panorama of shocks and energy. The collisions generated shock waves that set off a cel...
VLA Gives New Insight Into Galaxy Cluster’s Spectacular “Mini-Halo”
VLA Galaxy Cluster’s Spectacular Mini-Halo
2017/7/21
Astronomers using the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) have discovered new details that are helping them decipher the mystery of how giant radio-emitting structures ...
Embryonic cluster galaxy immersed in giant cloud of cold gas
Embryonic cluster galaxy immersed giant cloud of cold gas
2016/12/13
Astronomers studying a cluster of still-forming protogalaxies seen as they were more than 10 billion years ago have found that a giant galaxy in the center of the cluster is forming from a surprisingl...
Massive Galaxy Cluster Found to Be Bursting With New Stars
Massive Galaxy Cluster New Stars
2015/9/18
An international team of astronomers has discovered a distant massive galaxy cluster with a core bursting with new stars.The discovery, made with the help ofW. M. Keck Observatory’sMOSFIRE instru...
Detection of X-Ray Emission from the Arches Cluster near the Galactic Center
mass loss winds
2014/12/26
The Arches cluster is an extraordinarily compact massive star cluster with a core radius of about 10'' (~0.4 pc) and consisting of more than 150 O star candidates with initial stellar masses greater t...
Galaxy cluster formation from the large-scale structure: a case study of the Abell 2125 complex at z=0.247
C153 SW cD
2014/12/24
The structure of the universe is believed to have formed by clustering hierarchically from small to large scales. Much of this evolution occurs very slowly but at a few special times more rapid, viole...
Radio and Far-Infrared Emission as Tracers of Star Formation and Active Galactic Nuclei in Nearby Cluster Galaxies
AWM7 A426
2014/12/24
We have studied the radio and far-infrared (FIR) emission from 114 galaxies in the seven nearest clusters (<100 Mpc) with prominent X-ray emission to investigate the impact of the cluster environment ...
A Deep Radio Survey of Abell 2125. II. Accelerated Galaxy Evolution during a Cluster-Cluster Merger
Abell galaxies
2014/12/24
Using our extensive radio, optical, near-IR, and X-ray imaging and spectroscopy, we consider the reason for the unusually large number of radio-detected galaxies, mostly found outside the cluster core...
A Deep Radio Survey of Abell 2125. III. The Cluster Core: Merging and Stripping
evolution starburst
2014/12/24
We use radio, near-IR, optical, and X-ray observations to examine dynamic processes in the central region of the rich galaxy cluster Abell 2125. In addition to the central triple of E and cD galaxies,...
Non-equilibrium ionization model for stellar cluster winds and its application
NGC 3603 general
2014/12/23
We have developed a self-consistent physical model for superstellar cluster winds based on combining a 1D steady-state adiabatic wind solution and a non-equilibrium ionization calculation. Comparing w...
A bright, dust-obscured, millimetre-selected galaxy beyond the Bullet Cluster (1E0657-56)
submillimetre galaxies:starburst high redshift
2014/12/23
Deep 1.1 mm continuum observations of 1E0657−56 (the ‘Bullet Cluster’) taken with the millimeter-wavelength camera AzTEC on the 10-m Atacama Submillimeter Telescope Experiment (ASTE), have revea...
Pre-peak Ram Pressure Stripping in the Virgo Cluster Spiral Galaxy NGC 4501
NGC 4501 interactions
2014/12/23
VIVA Hi observations of the Virgo spiral galaxy NGC 4501 are presented. The Hi disk is sharply truncated to the southwest, well within the stellar disk. A region of low surface-density gas, which is m...
Evolution of the Mass Function of the Galactic Globular Cluster System
general stellar dynamics
2014/12/23
In this work 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 a...
We study the combined effects of relaxation, tidal heating and binary heating on globular cluster evolution, exploring the physical consequences of external effects and examining evolutionary trends i...
Globular Cluster Evolution in M87 and Fundamental Plane Ellipticals
M87 Fundamental Plane Ellipticals
2014/12/23
The globular cluster population in M87 has decreased measurably through dynamical evolution caused by relaxation, binary heating and time-dependent tidal perturbation. For fundamental plane elliptical...