منابع مشابه
Thin, thick and dark discs in CDM
In a cold dark matter ( CDM) cosmology, the Milky Way accretes satellites into the stellar disc. We use cosmological simulations to assess the frequency of near disc plane and higher inclination accretion events, and collisionless simulations of satellite mergers to quantify the final state of the accreted material and the effect on the thin disc. On average, a Milky Way-sized galaxy has three ...
متن کاملThin Discs, Thick Discs and Transition Zones
Accretion onto a compact object must occur through a disc when the material has some initial angular momentum. Thin discs and the thicker low radiative efficiency accretion flows (LRAFs) are solutions to this problem that have been widely studied and applied. This is an introduction to these accretion flows within the context of X-ray binaries and cataclysmic variables. Accretion describes the ...
متن کاملRadial mixing and the transition between the thick and thin Galactic discs
The analysis of the kinematics of solar neighbourhood stars shows that the low and high metallicity tails of the thin disc are populated by objects which orbital properties suggest an origin in the outer and inner galactic disc, respectively. Signatures of radial migration are identified in various recent samples, and are shown to be responsible for the high metallicity dispersion in the age-me...
متن کاملThe subhalo populations of ΛCDM dark haloes
We investigate the subhalo populations of dark matter haloes in the concordance ΛCDM cosmology. We use a large cosmological simulation and a variety of high resolution resimulations of individual cluster and galaxy haloes to study the systematics of subhalo populations over ranges of 1000 in halo mass and 1000 in the ratio of subhalo to parent halo mass. The subhalo populations of different hal...
متن کاملThrough Thick and Thin
Patients with symptoms caused by hypertrophic obstructive cardiomyopathy are treated with β-blockers, verapamil, and disopyramide. Novel drugs are under development. The minority of patients whose symptoms interfere substantially with lifestyle despite optimal pharmacological management may be offered septal reduction therapy with ablation or myectomy. Other mechanical therapies, including shor...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2008.13643.x