490 citations · 2.6k across the 52 of their papers we have counts for
52 papers
The Wide-field Spectroscopic Telescope (WST) Science White Paper
Vincenzo Mainieri, Richard I. Anderson, Jarle Brinchmann +214
The Wide-field Spectroscopic Telescope (WST) is proposed as a new facility dedicated to the efficient delivery of spectroscopic surveys. This white paper summarises the initial con…
From gas to stars: MUSEings on the internal evolution of IC 1613
S. Taibi, G. Battaglia, M. M. Roth +9
The kinematics and chemical composition of stellar populations of different ages provide crucial information about the evolution of a galaxy. We aim to provide such information for…
The Origin of Stars in the Inner 500 Parsecs in TNG50 Galaxies
Alina Boecker, Nadine Neumayer, Annalisa Pillepich +4
We investigate the origin of stars in the innermost of galaxies spanning stellar masses of at using the cos…
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…
A Deep View into the Nucleus of the Sagittarius Dwarf Spheroidal Galaxy with MUSE. III. Discrete multi-component population-dynamical models based on the Jeans equations
Nikolay Kacharov, Mayte Alfaro-Cuello, Nadine Neumayer +12
We present comprehensive multi-component dynamical models of M54 (NGC6715), the nuclear star cluster of the Sagittarius dwarf galaxy (Sgr), which is undergoing a tidal disruption i…
The stellar metallicity gradients of Local Group dwarf galaxies
S. Taibi, G. Battaglia, R. Leaman +5
Through a homogeneous analysis of spectroscopic literature data of red giant stars, we determine the radial metallicity profiles of 30 dwarf galaxies in the Local Group. We explore…
The Fornax3D project: discovery of ancient massive merger events in the Fornax cluster galaxies NGC 1380 and NGC 1427
Ling Zhu, Glenn van de Ven, Ryan Leaman +16
We report the discovery of ancient massive merger events in the early-type galaxies NGC 1380 and NGC 1427, members of the Fornax galaxy cluster. Both galaxies have been observed by…
Disentangling the formation mechanisms of nuclear star clusters
Katja Fahrion, Ryan Leaman, Mariya Lyubenova +1
Nuclear star clusters (NSCs) are massive star clusters found ubiquitously in the centres of galaxies, from the dwarf regime to massive ellipticals and spirals. The fraction of nucl…
On the link between nuclear star cluster and globular cluster system mass, nucleation fraction and environment
Ryan Leaman, Glenn van de Ven
We present a simple model for the host mass dependence of the galaxy nucleation fraction (), the galaxy's nuclear star cluster (NSC) mass and the mass in its surviving glo…
Once in a blue stream: Detection of recent star formation in the NGC 7241 stellar stream with MEGARA
David Martinez-Delgado, Santi Roca-Fabrega, Armando Gil de Paz +23
In this work we study the striking case of a narrow blue stream around the NGC 7241 galaxy and its foreground dwarf companion. We want to figure out if the stream was generated by…
Mass of the dynamically hot inner stellar halo predicts the ancient accreted stellar mass
Ling Zhu, Annalisa Pillepich, Glenn van de Ven +6
Galactic dynamical structures are fossil records of the assembly histories of galaxies. By analyzing the cosmological hydrodynamical simulation TNG50, we find that a dynamical stru…
Mapping Accreted Stars in Early-Type Galaxies Across the Mass-Size Plane
Thomas A. Davison, Mark A. Norris, Ryan Leaman +3
Galaxy mergers are instrumental in dictating the final mass, structure, stellar populations, and kinematics of galaxies. Cosmological galaxy simulations indicate that the most mass…
Joint Gas and Stellar Dynamical Models of WLM: An isolated dwarf galaxy within a cored, prolate DM halo
Gigi Y. C. Leung, Ryan Leaman, Giuseppina Battaglia +4
We present multi-tracer dynamical models of the low mass (), isolated dwarf irregular galaxy WLM in order to simultaneously constrain the inner slope of the dark…
Globular Cluster Systems of Relic Galaxies
Karla A. Alamo-Martínez, Ana L. Chies-Santos, Michael A. Beasley +6
We analyse the globular cluster (GC) systems of a sample of 15 massive, compact early-type galaxies (ETGs), 13 of which have already been identified as good relic galaxy candidates…
The inside-out formation of nuclear discs and the absence of old central spheroids in barred galaxies of the TIMER survey
Adrian Bittner, Patricia Sánchez-Blázquez, Dimitri A. Gadotti +13
The centres of disc galaxies host a variety of structures built via both internal and external processes. In this study, we constrain the formation and evolution of these central s…
Kinematic signatures of nuclear discs and bar-driven secular evolution in nearby galaxies of the MUSE TIMER project
Dimitri A. Gadotti, Adrian Bittner, Jesus Falcon-Barroso +13
The central regions of disc galaxies hold clues to the processes that dominate their formation and evolution. The TIMER project has obtained high signal-to-noise and spatial resolu…
Reconstructing the mass accretion histories of nearby Red Nuggets with their globular cluster systems
Michael A. Beasley, Ryan Leaman, Ignacio Trujillo +6
It is generally recognized that massive galaxies form through a combination of in-situ collapse and ex-situ accretion. The in-situ component forms early, where gas collapse and com…
Recovering age-metallicity distributions from integrated spectra: validation with MUSE data of a nearby nuclear star cluster
A. Boecker, M. Alfaro-Cuello, N. Neumayer +2
Current instruments and spectral analysis programs are now able to decompose the integrated spectrum of a stellar system into distributions of ages and metallicities. The reliabili…
Disentangling the formation history of galaxies via population-orbit superposition: method validation
Ling Zhu, Glenn van de Ven, Ryan Leaman +9
We present population-orbit superposition models for external galaxies based on Schwarzschild's orbit-superposition method, by tagging the orbits with age and metallicity. The mode…
A dwarf-dwarf merger and dark matter core as a solution to the Globular Cluster problems in the Fornax dSph
Gigi Y. C. Leung, Ryan Leaman, Glenn van de Ven +1
The five globular clusters (GCs) of the Fornax dSph are puzzling for two reasons; the mass in GCs is high with respect to the galaxy's old stellar mass, and their survival and larg…
Star formation at the edge of the Local Group: a rising star formation history in the isolated galaxy WLM
Saundra M. Albers, Daniel R. Weisz, Andrew A. Cole +11
We present the star formation history (SFH) of the isolated (D~970 kpc) Local Group dwarf galaxy WLM measured from color-magnitude diagrams constructed from deep Hubble Space Teles…
Is There a Fundamental Upper Limit to the Mass of a Star Cluster?
Mark A. Norris, Glenn van de Ven, Sheila J. Kannappan +2
The discovery around the turn of the millenium of a population of very massive (M > 210 M) compact stellar systems (CSS) with physical properties (radiu…
Survival of molecular gas in a stellar feedback-driven outflow witnessed with the MUSE TIMER project and ALMA
Ryan Leaman, Francesca Fragkoudi, Miguel Querejeta +15
Stellar feedback plays a significant role in modulating star formation, redistributing metals, and shaping the baryonic and dark structure of galaxies -- however, the efficiency of…
Constraining nuclear star cluster formation using MUSE-AO observations of the early-type galaxy FCC47
Katja Fahrion, Mariya Lyubenova, Glenn van de Ven +12
Nuclear star clusters (NSCs) are found in at least 70% of all galaxies, but their formation path is still unclear. In the most common scenarios, NSCs form in-situ from the galaxy's…