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Könyv címe:

Stellar Phase-Space Structure and Dynamics in the Solar Neighbourhood

Kinematic Studies of nearby Stars

Südwestdeutscher Verlag für Hochschulschriften (24.02.2009 )

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ISBN-13:

978-3-8381-0388-4

ISBN-10:
3838103882
EAN:
9783838103884
Könyv nyelve:
német
Ismertető:
This PhD thesis describes the search for, and analysis of, substructure in the phase-space distribution of stars within 1-2 kpc of the Sun. Such substructure, caused by stellar streams, is an important diagnostic of stellar dynamics and hierarchical formation of the Galaxy. While possibly phase-mixed, stellar streams remain detectable as coherent features in the space of integrals of motion. This thesis describes the development of new search techniques in phase- and [Fe/H]-space to derive "effective" integrals of motion that are most suitable for a comparison with the observables. An application of these techniques to two new data sets which contain radial velocity- and proper motion estimates reveals significant "phase-space overdensities" of stars on similar orbits, of which some are already known, but at least five are described here for the first time. This thesis also outlines a preperatory study in the context of GAIA to measure the local gravitational potential on kpc scale.
Kiadó:
Südwestdeutscher Verlag für Hochschulschriften
Weboldal:
https://www.svh-verlag.de
Szerezte:
Rainer Klement
Oldalszám:
192
Kiadja:
24.02.2009
Raktárkészlet:
Raktáron
Kategória:
Csillagászat
Ár:
79,90 €
Kulcsszavak:
Astronomy, Milky Way, galaxy formation, Milky Way Disk, Stellar Dynamics, Stellar Phase-Space Structure, Solar Neighbourhood, Galaxy Formation, Stellar Phase-Space Structure

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