activity
20192025
most citedThe coherent motion of Cen A dwarf satellite galaxies remains a challenge for CDM cosmology

62 citations · 279 across the 22 of their papers we have counts for

collaborators

22 papers

astro-ph.GA2025★ 3 cited

MUSE observations of dwarf galaxies and a stellar stream in the M83 group

Oliver Müller, Marina Rejkuba, Katja Fahrion +8

Spectroscopy for faint dwarf galaxies outside of our own Local Group is challenging. Here, we present MUSE spectroscopy to study the properties of four known dwarf satellites and o…

astro-ph.GA2025

New dwarf galaxy candidates in the M106, NGC3521, and UGCA127 groups with the Hyper Suprime Camera

Oliver Müller, Helmut Jerjen, Salvatore Taibi +3

The local universe is still full of hidden dwarf galaxies to be discovered using deep imaging campaigns. Here we present the third paper in a series to search for low-surface brigh…

astro-ph.GA2024★ 1 cited

Testing a proposed "planarity" tool for studying satellite systems: On the alleged consistency of Milky Way satellite galaxy planes with CDM

Marcel S. Pawlowski, Mariana P. Júlio, Kosuke Jamie Kanehisa +1

The existence of planes of satellite galaxies has been identified as a long-standing challenge to CDM cosmology, due to the rarity of satellite systems in cosmological simulatio…

astro-ph.GA2024★ 4 cited

Dwarf Galaxies in the MATLAS Survey: The satellite system of NGC474 under scrutiny with MUSE

Oliver Müller, Francine R. Marleau, Nick Heesters +12

A recent study of the distribution of dwarf galaxies in the MATLAS sample in galaxy groups revealed an excess of flattened satellite structures, reminiscent of the co-rotating plan…

astro-ph.GA2024★ 4 cited

Simulations of cluster ultra-diffuse galaxies in MOND

Srikanth T. Nagesh, Jonathan Freundlich, Benoit Famaey +4

Ultra-diffuse galaxies (UDGs) in the Coma cluster have velocity dispersion profiles that are in full agreement with the predictions of Modified Newtonian Dynamics (MOND) in isolati…

astro-ph.GA2024★ 6 cited

Lopsided distribution of MATLAS and ELVES dwarf satellite systems around isolated host galaxies

Nick Heesters, Helmut Jerjen, Oliver Müller +2

The properties of satellite dwarf galaxies pose important empirical constraints to verify cosmological models on galaxy scales. Their phase-space correlations, in particular, offer…