187 citations · 1.3k across the 37 of their papers we have counts for
38 papers
Globular cluster Observations for Luminosity-dispersion Distances (GOLD): Project description and velocity catalogue
K. Fahrion, M. A. Beasley, A. Gvozdenko +10
We introduce and describe the Globular cluster Observations for Luminosity-Dispersion distances (GOLD) project, which has the principal aim of determining independent distances bas…
STRRINGS: STReams in Residual Images of Nearby GalaxieS
E. Sola, D. Chemaly, V. Belokurov +11
Tidal features from galaxy mergers, particularly stellar streams, offer valuable insights into galaxy assembly and dark matter halo properties. This paper aims to identify a large…
Distance measurements from the internal dynamics of globular clusters: Application to the Sombrero galaxy (M104)
Katja Fahrion, Michael A. Beasley, Anastasia Gvozdenko +7
Globular clusters (GCs) are dense star clusters found in all massive galaxies. Recent work has established that they follow a tight relation between their internal stellar velocity…
An LBT view of the co-rotating group of galaxies around NGC 2750: Deep imaging and new satellite candidates
S. Taibi, M. S. Pawlowski, O. Müller +6
Some galaxies such as the Milky Way and Andromeda display coherently rotating satellite planes, posing tensions with cosmological simulations. NGC 2750 has emerged as an additional…
The Next Generation Virgo Cluster Survey (NGVS). XXVII.The Size and Structure of Globular Cluster Systems and their Connection to Dark Matter Halos
Sungsoon Lim, Eric W. Peng, Patrick Côté +18
We study the size and structure of globular clusters (GC) systems of 118 early-type galaxies from the NGVS, MATLAS, and ACSVCS surveys. Fitting Sérsic profiles, we investigate the…
New dwarf galaxy candidates in the sphere of influence of the Sombrero galaxy
Ethan Crosby, Helmut Jerjen, Oliver Müller +3
We report the discovery of 40 new satellite dwarf galaxy candidates in the sphere of influence of the Sombrero galaxy (M104) the most luminous galaxy in the Local Volume. Using the…
The creation of a massive UCD by tidal threshing from NGC 936
Sanjaya Paudel, Pierre-Alain Duc, Sungsoon Lim +9
We study a compact nucleus embedded in an early-type dwarf galaxy, MATLAS-167, which is in the process of disruption by the tidal force of the neighboring giant S0 galaxy, NGC 936,…
Is the correlation between the bulge-to-total stellar mass ratio and the number of dwarf galaxies in tension with CDM?
Oliver Müller, Ethan Crosby
Previous results suggest that there exists a correlation between the size of the bulge of a galaxy and the number of its dwarf galaxy satellites. This was found to be inconsistent…
The imprint of galaxy mergers on satellite planes in a cosmological context
Kosuke Jamie Kanehisa, Marcel S. Pawlowski, Oliver Müller
Flattened and kinematically correlated planes of dwarf satellite galaxies have been observed in the Local Volume. The slinging out of satellites during host galaxy mergers has been…
Radial velocities and stellar population properties of 56 MATLAS dwarf galaxies observed with MUSE
Nick Heesters, Oliver Müller, Francine R. Marleau +6
Dwarf galaxies have been extensively studied in the Local Group, in nearby groups, and selected clusters, giving us a robust picture of their global stellar and dynamical propertie…
New dwarf galaxy candidates in the sphere of influence of the Local Volume spiral galaxy NGC2683
E. Crosby, H. Jerjen, O. Müller +3
We present initial results of a survey of host galaxies environments in the Local Volume (Mpc) searching for satellite dwarf galaxy candidates using the wide-field…
Is there a dwarf galaxy satellite-of-satellite problem in CDM?
Oliver Müller, Nick Heesters, Helmut Jerjen +2
Dark matter clusters on all scales, therefore it is expected that even substructure should host its own substructure. Using the Extragalactic Distance Database, we searched for dwa…
Classifying the satellite plane membership of Centaurus A's dwarf galaxies using orbital alignment constraints
Kosuke Jamie Kanehisa, Marcel S. Pawlowski, Oliver Müller +1
The flattened, possibly co-rotating plane of satellite galaxies around Centaurus A, if more than a fortuitous alignment, adds to the pre-existing tension between the well-studied M…
The Cen A galaxy group: dynamical mass and missing baryons
Oliver Müller, Federico Lelli, Benoit Famaey +5
The nearby elliptical galaxy Cen A is surrounded by a flattened system of dwarf satellite galaxies with coherent motions. Using a novel Bayesian approach, we measure the mean rotat…
The phantom dark matter halos of the Local Volume in the context of modified Newtonian dynamics
P. -A. Oria, B. Famaey, G. F. Thomas +8
We explore the predictions of Milgromian gravity (MOND) in the Local Universe by considering the distribution of the `phantom' dark matter (PDM) that would source the MOND gravitat…
Probing the radial acceleration relation and the strong equivalence principle with the Coma cluster ultra-diffuse galaxies
J. Freundlich, B. Famaey, P. -A. Oria +3
The tight radial acceleration relation (RAR) obeyed by rotationally supported disk galaxies is one of the most successful a priori predictions of the modified Newtonian dynamics (M…
Dwarfs from the Dark (Energy Survey): a machine learning approach to classify dwarf galaxies from multi-band images
Oliver Müller, Eva Schnider
Countless low-surface brightness objects - including spiral galaxies, dwarf galaxies, and noise patterns - have been detected in recent large surveys. Classically, astronomers visu…
Dwarf galaxies in the MATLAS survey: Hubble Space Telescope observations of the globular cluster system in the ultra-diffuse galaxy MATLAS-2019
Oliver Müller, Patrick R. Durrell, Francine R. Marleau +11
Ultra-diffuse galaxies (UDGs) are very low-surface brightness galaxies with large effective radii. Spectroscopic measurements of a few UDGs have revealed a low dark matter content,…
Deep optical imaging of the dark galaxy candidate AGESVC1 282
Michal Bílek, Oliver Müller, Ana Vudragović +1
The blind HI survey Arecibo Galaxy Environment Survey (AGES) detected several unresolved sources in the Virgo cluster, which do not have optical counterparts in the Sloan Digital S…
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…
A spectroscopic study of MATLAS-2019 with MUSE: an ultra-diffuse galaxy with an excess of old globular clusters
Oliver Müller, Francine R. Marleau, Pierre-Alain Duc +10
The MATLAS deep imaging survey has uncovered a plethora of dwarf galaxies in the low density environment it has mapped. A fraction of them are unusually extended and have a low-sur…
The Halos and Environments of Nearby Galaxies (HERON) II: The outer structure of edge-on galaxies
Aleksandr Mosenkov, R. Michael Rich, Andreas Koch +6
The HERON project is aimed at studying halos and low surface brightness details near galaxies. In this second HERON paper we consider in detail deep imaging (down to surface bright…
Metal-poor nuclear star clusters in two dwarf galaxies near Centaurus A suggesting formation from the in-spiraling of globular clusters
Katja Fahrion, Oliver Müller, Marina Rejkuba +7
Studies of nucleated dwarf galaxies can constrain the scenarios for the formation and evolution of nuclear star clusters (NSC) in low-mass galaxies and give us insights on the orig…
Hunting ghosts: the iconic stellar stream(s) around NG5907 under scrutiny
Oliver Müller, Ana Vudragović, Michal Bílek
Stellar streams are regarded as crucial objects to test galaxy formation models, with their morphology tracing the underlying potentials and their occurrence tracking the assembly…