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Gemini Tracks Distant Star Cluster with Adaptive Optics
Gemini Distant Star Cluster Adaptive Optics
2017/7/20
We present a proper motion measurement for the halo globular cluster Pyxis, using HST/ACS data as the first epoch, and GeMS/GSAOI Adaptive Optics data as the second, separated by a baseline of ～ 5 yea...
ALMA Discovers Proto Super Star Cluster -- a Cosmic 'Dinosaur Egg' About to Hatch
ALMA Proto Super Star Cluster Dinosaur Egg
2015/5/25
Globular clusters – dazzling agglomerations of up to a million ancient stars – are among the oldest objects in the universe. Though plentiful in and around many galaxies, newborn examples are vanishin...
PROGRESSIVE STAR FORMATION IN THE YOUNG GALACTIC SUPER STAR CLUSTER NGC 3603
star formation history
2014/12/20
Early Release Science observations of the cluster NGC 3603 with the WFC3 on the refurbished Hubble Space Telescope allow us to study its recent star formation history. Our analysis focuses on stars wi...
A Relic Star Cluster in the Sextans Dwarf Spheroidal Galaxy - Implications for Early Star and Galaxy Formation
Relic Star Cluster the Sextans Dwarf Spheroidal Galaxy Implications Galaxy Formation
2012/2/23
We present tentative evidence for the existence of a dissolved star cluster in the Sextans dwarf spheroidal galaxy. In a sample of six stars, we identify three (possibly four) stars around [Fe/H] =-2....
Evolution of Super Star Cluster Winds with Strong Cooling
Evolution Super Star Cluster Winds Strong Cooling
2011/10/18
We study the evolution of Super Star Cluster (SSC) winds driven by stellar winds and supernova (SN) explosions. Time-dependent rates at which mass and energy are deposited into the cluster volume, as ...
The Star Cluster Populations of Compact Galaxy Groups
Cluster Populations Compact Galaxy Groups
2011/10/11
Star clusters are ideal tracers of star formation activity in systems outside the volume that can be studied using individual, resolved stars. These unresolved clusters span orders of magnitude in bri...
Probing the Microscopic with the Macroscopic: from Properties of Star Cluster Systems to Properties of Cluster-Forming Regions
Macroscopic: Properties Cluster Systems Cluster-Forming Regions
2011/10/11
To understand how systems of star clusters have reached their presently observed properties constitutes a powerful probe into the physics of cluster formation, without needing to resort to high spatia...
Segue 3: An Old, Extremely Low luminosity Star Cluster in the Milky Way's Halo
Extremely luminosity Star Cluster Milky Way
2011/10/10
We investigate the kinematic and photometric properties of the Segue 3 Milky Way companion using Keck/DEIMOS spectroscopy and Magellan/IMACS g and r-band imaging. Using maximum likelihood methods to a...
In the center of the Milky Way, as well as in many other galaxies, a compact star cluster around a very massive black hole is observed. One of the possible explanations for the formation of such Nucle...
The Star Cluster Population of the Collisional Ring Galaxy NGC 922
galaxies individual (NGC 922) galaxies star clusters galaxies interactions
2010/3/8
We present a detailed study of the star cluster population detected in the galaxy NGC922, one of the closest collisional ring galaxies known to date, using HST/WFPC2 UBVI photometry, population synthe...
Star cluster encounters：a possible explanation for elliptical clusters
Star cluster elliptical clusters
2009/6/5
Star cluster encounters：a possible explanation for elliptical clusters。