Results 21 to 30 of about 331,708 (213)
Gaia DR2 proper motions of dwarf galaxies within 420 kpc [PDF]
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 have generally been of limited accuracy and are available only for more ...
T. Fritz+8 more
semanticscholar +1 more source
Star formation histories of dwarf galaxies in the FIRE simulations: dependence on mass and Local Group environment [PDF]
We study star formation histories (SFHs) of 500 dwarf galaxies (stellar mass $M_\ast =10^5\!-\!10^9\, \rm {M}_\odot$) from FIRE-2 cosmological zoom-in simulations. We compare dwarfs around individual Milky Way (MW)-mass galaxies, dwarfs in Local Group (
S. Garrison-Kimmel+17 more
semanticscholar +1 more source
Associations of Dwarf Galaxies [PDF]
50 pages, 2 tables, 15 encapsulated figures, 1 (3 part) jpg figure.
Luca Rizzi+10 more
openaire +3 more sources
Neutron-capture elements in dwarf galaxies [PDF]
Context. We present a large homogeneous set of stellar parameters and abundances across a broad range of metallicities, involving 13 classical dwarf spheroidal (dSph) and ultra-faint dSph (UFD) galaxies. In total, this study includes 380 stars in Fornax,
Á. Skúladóttir+5 more
semanticscholar +1 more source
AGN-Driven Outflows in Dwarf Galaxies [PDF]
We present spatially resolved kinematic measurements of active galactic nucleus (AGN)-driven outflows in dwarf galaxies in the stellar mass range ∼6 × 108–9 × 109 M⊙, selected from SDSS DR7 and DR8 and followed-up with Keck/LRIS spectroscopy.
Christina M. Manzano-King+2 more
semanticscholar +1 more source
An Overview of the Dwarf Galaxy Survey [PDF]
The Dwarf Galaxy Survey (DGS) program is studying low-metallicity galaxies using 230h of far-infrared (FIR) and submillimetre (submm) photometric and spectroscopic observations of the Herschel Space Observatory and draws to this a rich database of a wide range of wavelengths tracing the dust, gas and stars.
Madden, S. C.+40 more
openaire +10 more sources
THE OBSERVED PROPERTIES OF DWARF GALAXIES IN AND AROUND THE LOCAL GROUP [PDF]
Positional, structural, and dynamical parameters for all dwarf galaxies in and around the Local Group are presented, and various aspects of our observational understanding of this volume-limited sample are discussed.
A. McConnachie
semanticscholar +1 more source
The formation of ultra-compact dwarf galaxies and nucleated dwarf galaxies [PDF]
Ultra compact dwarf galaxies (UCDs) have similar properties as massive globular clusters or the nuclei of nucleated galaxies. Recent observations suggesting a high dark matter content and a steep spatial distribution within groups and clusters provide new clues as to their origins.
Stelios Kazantzidis+6 more
openaire +6 more sources
The Pristine dwarf galaxy survey–V. The edges of the dwarf galaxy Hercules
ABSTRACT We present a new spectroscopic study of 175 stars in the vicinity of the dwarf galaxy Hercules (d ∼ 132 kpc) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Field multi-object system to solve the conundrum that whether Hercules is tidally disrupting.
Nicolas Longeard+8 more
openaire +3 more sources
Dark matter heats up in dwarf galaxies [PDF]
Gravitational potential fluctuations driven by bursty star formation can kinematically ‘heat up’ dark matter at the centres of dwarf galaxies. A key prediction of such models is that, at a fixed dark matter halo mass, dwarfs with a higher stellar mass ...
J. Read, Matthew C. Walker, P. Steger
semanticscholar +1 more source