559 citations · 9.7k across the 192 of their papers we have counts for
100 papers · 1 filter
The galactic acceleration scale is imprinted on globular cluster systems of early-type galaxies of most masses and on red and blue globular cluster subpopulations
Michal Bílek, Michael Hilker, Florent Renaud +3
Context. Globular clusters (GCs) carry information about the formation histories and gravitational fields of their host galaxies. Bílek et al. (2019, BSR19 hereafter) reported that…
Expanding on the Fundamental Metallicity Relation in Dwarf Galaxies with MUSE
Teodora-Elena Bulichi, Katja Fahrion, François Mernier +10
The mass-metallicity relation (MZR) represents one of the most important scaling relations in the context of galaxy evolution, comprising a positive correlation between stellar mas…
Ultra diffuse galaxies in the Hydra I cluster from the LEWIS Project: Phase-Space distribution and globular cluster richness
Duncan Forbes, Jonah Gannon, Enrichetta Iodice +18
Although ultra diffuse galaxies (UDGs) are found in large numbers in clusters of galaxies, the role of the cluster environment in shaping their low surface brightness and large siz…
Looking into the faintEst WIth MUSE (LEWIS): on the nature of ultra-diffuse galaxies in the Hydra-I cluster.I. Project description and preliminary results
Enrichetta Iodice, Michael Hilker, Goran Doll +23
Looking into the faintEst WIth MUSE (LEWIS) is an ESO large observing programme aimed at obtaining the first homogeneous integral-field spectroscopic survey of 30 extremely low-sur…
Do old globular clusters in low mass galaxies disprove modified gravity?
Michal Bílek, Hongsheng Zhao, Benoit Famaey +6
The controversy "dark matter vs. modified gravity" constitutes a major topic of discussion. It was proposed that dynamical friction could be used to discriminate between the two al…
The SAMI-Fornax Dwarfs Survey III: Evolution of [/Fe] in dwarfs, from Galaxy Clusters to the Local Group
J. Romero-Gómez, Reynier F. Peletier, J. A. L. Aguerri +10
Using very deep, high spectral resolution data from the SAMI Integral Field Spectrograph we study the stellar population properties of a sample of dwarf galaxies in the Fornax Clus…
A Wide-Field View on Multiple Stellar Populations in 28 Milky Way Globular Clusters
E. Leitinger, H. Baumgardt, I. Cabrera-Ziri +2
The majority of Galactic globular clusters (GCs) contain multiple stellar populations displaying specific chemical abundance variations. In particular, GCs generally contain a `pri…
Nuclear star cluster formation in star-forming dwarf galaxies
Katja Fahrion, Teodora-Elena Bulichi, Michael Hilker +7
Nuclear star clusters (NSCs) are massive star clusters found in all types of galaxies from dwarfs to massive galaxies. Recent studies show that while low-mass NSCs in dwarf galaxie…
The SAMI -- Fornax Dwarfs Survey II: The Stellar Mass Fundamental Plane and the Dark Matter fraction of Dwarf Galaxies
F. Sara Eftekhari, Reynier F. Peletier, Nicholas Scott +14
We explore the kinematic scaling relations of 38 dwarf galaxies in the Fornax Cluster using observations from the SAMI integral field spectrograph. We focus on the Fundamental Plan…
Galaxy populations in the Hydra I cluster from the VEGAS survey II. The ultra-diffuse galaxy population
Antonio La Marca, Enrichetta Iodice, Michele Cantiello +18
In this work, we extend the catalog of low-surface brightness (LSB) galaxies, including Ultra-Diffuse Galaxy (UDG) candidates, within of the Hydra I cluster of…
Galaxy populations in the Hydra I cluster from the VEGAS survey I. Optical properties of a large sample of dwarf galaxies
Antonio La Marca, Reynier Peletier, Enrichetta Iodice +17
At ~50 Mpc, the Hydra I cluster of galaxies is among the closest cluster in the z=0 Universe, and an ideal environment to study dwarf galaxy properties in a cluster environment. We…
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…
First direct dynamical detection of a dual supermassive black hole system at sub-kiloparsec separation
Karina. T. Voggel, Anil C. Seth, Holger Baumgardt +7
We investigated whether the two recently discovered nuclei in NGC7727 both host a super-massive black hole (SMBH). We used the high spatial resolution mode of the integral-field sp…
The Fornax Deep Survey (FDS) with VST XII: Low surface brightness dwarf galaxies in the Fornax cluster
Aku Venhola, Reynier F. Peletier, Heikki Salo +9
In this work we use Max-Tree Objects, (MTO) on the FDS data in order to detect previously undetected Low surface brightness (LSB) galaxies. After extending the existing Fornax dwar…
The Fornax Cluster VLT Spectroscopic Survey IV -- Cold kinematical substructures in the Fornax core from COSTA
N. R. Napolitano, M. Gatto, C. Spiniello +15
The COld STream finder Algorithm (COSTA) is a novel algorithm to find streams in the phase space of planetary nebulae (PNe) and globular cluster (GCs) populations. COSTA isolates g…
The Fornax Cluster VLT Spectroscopic Survey III -- Kinematical characterisation of globular clusters across the Fornax galaxy cluster
Avinash Chaturvedi, Michael Hilker, Michele Cantiello +7
The Fornax cluster provides an unparalleled opportunity to investigate in detail the formation and evolution of early-type galaxies in a dense environment. We aim at kinematically…
Stellar feedback in a clumpy galaxy at 3.4
E. Iani, A. Zanella, J. Vernet +18
Giant star-forming regions (clumps) are widespread features of galaxies at . Theory predicts that they can play a crucial role in galaxy evolution if they survive to…
Formation of an ultra-diffuse galaxy in the stellar filaments of NGC3314A: caught in act?
Enrichetta Iodice, Antonio La Marca, Michael Hilker +13
The VEGAS imaging survey of the Hydra I cluster reveals an extended network of stellar filaments to the south-west of the spiral galaxy NGC3314A. Within these filaments, at a proje…
Ultra-compact dwarfs beyond the centre of the Fornax galaxy cluster: Hints of UCD formation in low-density environments
Teymoor Saifollahi, Joachim Janz, Reynier F. Peletier +6
Ultra-compact dwarf galaxies (UCDs) were serendipitously discovered by spectroscopic surveys in the Fornax cluster twenty years ago. Nowadays, it is commonly accepted that many bri…
Diversity of nuclear star cluster formation mechanisms revealed by their star formation histories
K. Fahrion, M. Lyubenova, G. van de Ven +15
Nuclear star clusters (NSCs) are the densest stellar systems in the Universe and are found in the centres of all types of galaxies. They are thought to form via mergers of star clu…
What to expect when using globular clusters as tracers of the total mass distribution in Milky Way-mass galaxies
Meghan E. Hughes, Prashin Jethwa, Michael Hilker +8
Dynamical models allow us to connect the motion of a set of tracers to the underlying gravitational potential, and thus to the total (luminous and dark) matter distribution. They a…
What does (not) drive the variation of the low-mass end of the stellar initial mass function of early-type galaxies
C. E. Barbosa, C. Spiniello, M. Arnaboldi +3
The stellar initial mass function (IMF) seems to be variable and not universal, as argued in the literature in the last three decades. Several relations among the low-mass end of t…
A preserved high-z compact progenitor in the heart of NGC3311 revealed with MUSE 2D stellar population analysis
C. E. Barbosa, C. Spiniello, M. Arnaboldi +3
Massive early-type galaxies are believed to be the end result of an extended mass accretion history. The stars formed in situ very early on in the initial phase of the assembly mig…
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…