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CLUES about M33: the reversed radial stellar age gradient in the outskirts of Triangulum galaxy
Robert Mostoghiu, Arianna Di Cintio, Alexander Knebe +3
HST/ACS observations along the major axis of M33 show that the mean age of its stars decreases with increasing distance from the galaxy center. Such a behavior is consistent with a…
Stellar Feedback and the Energy Budget of Late-Type Galaxies: Missing Baryons and Core Creation
Harley Katz, Harry Desmond, Federico Lelli +4
In a CDM cosmology, galaxy formation is a globally inefficient process: it is often the case that far fewer baryons are observed in galaxy disks than expected from the cosmic ba…
On the early evolution of Local Group dwarf galaxy types: star formation and supernova feedback
Jose R. Bermejo-Climent, Giuseppina Battaglia, Carme Gallart +8
According to star formation histories (SFHs), Local Group dwarf galaxies can be broadly classified in two types: those forming most of their stars before () and t…
Gaia DR2 Proper Motions of Dwarf Galaxies within 420 kpc: Orbits, Milky Way Mass, Tidal Influences, Planar Alignments, and Group Infall
T. K. Fritz, G. Battaglia, M. S. Pawlowski +5
A proper understanding of the Milky Way (MW) dwarf galaxies in a cosmological context requires knowledge of their 3D velocities and orbits. However, proper motion (PM) measurements…
Spectroscopic characterisation of the stellar content of ultra diffuse galaxies
T. Ruiz-Lara, M. A. Beasley, J. Falcón-Barroso +7
Understanding the peculiar properties of Ultra Diffuse Galaxies (UDGs) via spectroscopic analysis is a challenging task requiring very deep observations and exquisite data reductio…