منابع مشابه
Phase models of the Milky Way stellar disc
We present a new iterative method for constructing equilibrium phase models of stellar systems. Importantly, this method can provide phase models with arbitrary mass distributions. The method is based on the following principle. Our task is to generate an equilibrium N-body system with a given mass distribution. For this purpose, we let the system reach equilibrium through its dynamical evoluti...
متن کاملPhase Models of the Milky Way Stellar Disk
A new iterative method for constructing the self-consistent phase equilibrium models of stellar systems with a fixed mass density distribution is used for constructing the Milky Way Galaxy disk model. In this method, we use the density distribution in the Galaxy as input data. Here we used two Galactic density models (suggested by Flynn, Sommer-Larsen & Christensen 1996; Dehnen & Binney 1998a)....
متن کاملBuilding up the Stellar Halo of the Milky Way
We study numerical simulations of satellite galaxy disruption in a potential resembling that of the Milky Way. Our goal is to assess whether a merger origin for the stellar halo would leave observable fossil structure in the phase-space distribution of nearby stars. We show how mixing of disrupted satellites can be quantified using a coarse-grained entropy. Although after 10 billion years few o...
متن کاملThe Disc Origin of the Milky Way Bulge
The Galactic bulge, that is the prominent out-of-plane over-density present in the inner few kiloparsecs of the Galaxy, is a complex structure, as the morphology, kinematics, chemistry, and ages of its stars indicate. To understand the nature of its main components—those at [Fe/H] −1 dex—it is necessary to make an inventory of the stellar populations of the Galactic disc(s), and of their border...
متن کاملDynamical Models of the Milky Way
The only way to map the Galaxy's gravitational potential Φ(x) and the distribution of matter that produces it is by modelling the dynamics of stars and gas. Observations of the kinematics of gas provide key information about gradients of Φ within the plane, but little information about the structure of Φ out of the plane. Traditional Galaxy models assume, for each of the Galaxy's components, ar...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2008.12649.x