527 citations · 8.5k across the 128 of their papers we have counts for
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The coherent motion of Cen A dwarf satellite galaxies remains a challenge for CDM cosmology
Oliver Müller, Marcel S. Pawlowski, Federico Lelli +6
The plane-of-satellites problem is one of the most severe small-scale challenges for the standard CDM cosmological model: several dwarf galaxies around the Milky Way and Androme…
An extended halo around an ancient dwarf galaxy
Anirudh Chiti, Anna Frebel, Joshua D. Simon +7
The Milky Way is surrounded by dozens of ultra-faint (< solar luminosities) dwarf satellite galaxies. They are the surviving remnants of the earliest galaxies, as confirmed…
The properties of dwarf spheroidal galaxies in the Cen A group: Stellar populations, internal dynamics, and a heart-shaped Halpha ring
Oliver Müller, Katja Fahrion, Marina Rejkuba +7
Dwarf spheroidal galaxies (dSphs) have been extensively investigated in the Local Group, but their low luminosity and surface brightness make similar work in more distant galaxy gr…
The abundance of dwarf galaxies around low-mass giants in the Local Volume
Oliver Müller, Helmut Jerjen
The abundance of satellite dwarf galaxies has long been considered a crucial test for the current model of cosmology leading to the well-known missing satellite problem. Recent adv…
Gaia and Hubble unveil the kinematics of stellar populations in the Type II globular clusters ω Centauri and M 22
G. Cordoni, A. P. Milone, A. F. Marino +8
The origin of multiple stellar populations in Globular Clusters (GCs) is one of the greatest mysteries of modern stellar astrophysics. N-body simulations suggest that the present-d…
Stellar metallicities from SkyMapper photometry I: A study of the Tucana II ultra-faint dwarf galaxy
Anirudh Chiti, Anna Frebel, Helmut Jerjen +2
We present a study of the ultra-faint Milky Way dwarf satellite galaxy Tucana II using deep photometry from the 1.3m SkyMapper telescope at Siding Spring Observatory, Australia. Th…