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Kim 3: an Ultra-faint Star Cluster in the Constellation of Centaurus
Dongwon Kim, Helmut Jerjen, Dougal Mackey +2
We report the discovery of an ultra-faint star cluster in the constellation of Centaurus. This new stellar system, Kim 3, features a half light radius of $r_{h}=2.29^{+1.28}_{-0.52…
The Binary Populations of Eight Globular Clusters in the Outer Halo of the Milky Way
A. P. Milone, A. F. Marino, L. R. Bedin +6
We analyse color-magnitude diagrams of eight Globular Clusters (GCs) in the outer Galactic Halo. Images were taken with the Wide Field Channel of the Advanced Camera for Survey and…
New dwarf galaxy candidates in the Centaurus group
Oliver Müller, Helmut Jerjen, Bruno Binggeli
Recent studies of the distribution and kinematics of the Milky Way and Andromeda satellite galaxy systems have confirmed the existence of coplanar, corotating structures of galaxie…
The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. III. A quintuple stellar population in NGC2808
A. P. Milone, A. F. Marino, G. Piotto +9
In this study we present first results from multi-wavelength Hubble Space Telescope (HST) observations of the Galactic globular cluster GC NGC2808 as an extension of the Hubble Spa…
The new Milky Way satellites: alignment with the VPOS and predictions for proper motions and velocity dispersions
Marcel S. Pawlowski, Stacy S. McGaugh, Helmut Jerjen
The evidence that stellar systems surrounding the Milky Way (MW) are distributed in a Vast Polar Structure (VPOS) may be observationally biased by satellites detected in surveys of…
Horologium II: a Second Ultra-faint Milky Way Satellite in the Horologium Constellation
Dongwon Kim, Helmut Jerjen
We report the discovery of a new ultra-faint Milky Way satellite candidate, Horologium II, detected in the Dark Energy Survey Y1A1 public data. Horologium II features a half light…