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The outer haloes of the Milky Way and Andromeda galaxies contain as much important information on their assembly and formation history as the properties of the discs resident in their centres. In this...
A Lower Limit on the Halo Mass to form Supermassive Black Holes
black hole physics — hydrodynamics— galaxies: nuclei—accretion:accretion discs
2011/10/11
We consider a scenario where supermassive black holes form through direct accumulation of gas at the centre of proto-galaxies. In the first stage, the accumulated gas forms a super-massive star whose ...
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...
Structure and Population of the NGC55 Stellar Halo from a Subaru/Suprime-Cam Survey
Population Stellar Halo Subaru Suprime-Cam Survey
2011/9/28
As part of our survey of galactic stellar halos, we investigate the structure and stellar populations of the northern outer part of the stellar halo in NGC55, a member galaxy of the Sculptor Group, us...
A new RR Lyrae Survey of the Galactic Halo using QUEST Collaboration Data
Galactic Halo QUEST Collaboration Data
2009/6/26
A new RR Lyrae Survey of the Galactic Halo using QUEST Collaboration Data。
Structure of the Halo of the Milky Way。
Searching for ghosts in the galactic halo：what can we learn about the formation of
galactic halo stellar halo galaxy
2009/6/25
Searching for ghosts in the galactic halo：what can we learn about the formation of
the galaxy from the stellar halo?
Confirmation of halo substructure using quest rr lyrae data：the new virgo stellar stream (VSS)
halo substructure virgo stellar rr lyrae data
2009/6/25
Confirmation of halo substructure using quest rr lyrae data：the new virgo stellar stream (VSS)。
Sub-structures in the halo of the milky way。
ON THE DISC AND HALO OF THE MILKY WAY THROUGH A STUDY OF STAR CLUSTERS
HALO STAR CLUSTERS THE MILKY WAY
2009/3/16
The subject is the metallicity and the correlation between the
metallicity and spatial distribution of star clusters of the Milky Way. The open
star clusters are confirmed as good indicators for the...