Results 51 to 60 of about 97,868 (355)
Feedback and the formation of dwarf galaxy stellar haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 Stellar population studies show that low mass galaxies in all environments exhibit stellar halos that are older and more spherically distributed than the main body of the galaxy. In some cases, there is a significant intermediate age component that extends beyond the young disk. We examine a suite of Smoothed Particle Hydrodynamic (SPH) simulations and
Stinson, Greg +5 more
openaire +2 more sources
Galaxy morphology and the stellar-halo mass relation
, 2020 We use data from the SDSS DR7 and visual classifications of morphology from the Galaxy Zoo project to show that the scatter in the stellar-halo mass relation correlates with galaxy morphology, such that more massive galaxies at fixed halo mass are mostly spirals. We obtain this same correlation in galaxies from the EAGLE simulation.
Camila A. Correa
+5 more sources
Diverse stellar haloes in nearby Milky Way mass disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 26 pages, 17 figures.
Benjamin Harmsen +6 more
openalex +6 more sources
Stellar halos around Local Group galaxies [PDF]
Proceedings of the International Astronomical Union, 2015 AbstractThe Local Group is now home to 102 known galaxies and candidates, with many new faint galaxies continuing to be discovered. The total stellar mass range spanned by this population covers a factor of close to a billion, from the faintest systems with stellar masses of order a few thousand to the Milky Way and Andromeda, with stellar masses of ...
openaire +1 more source
BUILDING THE STELLAR HALO THROUGH FEEDBACK IN DWARF GALAXIES [PDF]
The Astrophysical Journal, 2012 12 pages, 3 figures, accepted for publication in ...
Maxwell, Aaron J. +3 more
openaire +2 more sources
TREX: Kinematic Characterization of a High-dispersion Intermediate-age Stellar Component in M33
The Astrophysical Journal, 2023 The dwarf galaxy Triangulum (M33) presents an interesting testbed for studying stellar halo formation: it is sufficiently massive so as to have likely accreted smaller satellites, but also lies within the regime where feedback and other “in situ ...
L. R. Cullinane +9 more
doaj +1 more source
Modelling Kinematics and Dark Matter: The Halos of Elliptical Galaxies [PDF]
, 2005 This review is focussed on the outer halos of elliptical galaxies. Its emphasis is on (i) planetary nebulae as test particles to trace the stellar kinematics at large radii, (ii) the observed angular momentum in elliptical galaxy halos and its ...
Gerhard, Ortwin
core +3 more sources
SYSTEMATIC PROBLEMS WITH USING DARK MATTER SIMULATIONS TO MODEL STELLAR HALOS [PDF]
, 2014 The limits of available computing power have forced models for the structure of stellar halos to adopt one or both of the following simplifying assumptions: (1) stellar mass can be “painted” onto dark matter (DM) particles in progenitor satellites; (2 ...
J. Bailin +6 more
semanticscholar +1 more source
HIERARCHICAL GALAXY GROWTH AND SCATTER IN THE STELLAR MASS–HALO MASS RELATION [PDF]
, 2016 The relation between galaxies and dark matter halos reflects the combined effects of many distinct physical processes. Observations indicate that the z = 0 stellar mass–halo mass (SMHM) relation has remarkably small scatter in stellar mass at fixed halo ...
Meng Gu (顾梦), C. Conroy, P. Behroozi
semanticscholar +1 more source
THE STELLAR HALOS OF MASSIVE ELLIPTICAL GALAXIES. II. DETAILED ABUNDANCE RATIOS AT LARGE RADIUS [PDF]
, 2013 We study the radial dependence in stellar populations of 33 nearby early-type galaxies with central stellar velocity dispersions σ* ≳ 150 km s−1. We measure stellar population properties in composite spectra, and use ratios of these composites to ...
J. Greene +6 more
semanticscholar +1 more source