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Stellar kinematics in surveys and simulations

Mikkola, Daniel LU (2022)
Abstract
We study stellar motions in the Milky Way with N-body simulations and large astrometric samples from ESA's Gaia mission. We identify two kinematic populations for white dwarfs in the Solar neighbourhood. We also investigate the accreted halo and reveal two new structures. Finally, our simulations show that radial migration as a function of vertical action depends on disc mass.
Abstract (Swedish)
Vi studerar stjärnors rörelser i Vintergatan med N-body simuleringar och stora astrometriska dataset från ESAs rymdteleskop Gaia. Vi identifierar två kinematiska populationer för vita dvärgar i Solens kvarter. Vi undersöker även ansamlade halon och avslöjar två nya hastighetsstrukturer. Slutligen, våra simuleringar visar att radiell migrering som en funktion av vertical action beror på diskmassa.
Please use this url to cite or link to this publication:
author
supervisor
opponent
  • Doctor Martig, Marie, Astrophysics Research Institute, Liverpool John Moores University
organization
publishing date
type
Thesis
publication status
published
subject
keywords
Galactic dynamics, stellar dynamics, simulations, Gaia, Galactic dynamics, Stellar kinematics, Numerical simulations, Statistical methods, Solar neighborhood
pages
120 pages
publisher
Lund Observatory, Lund University
defense location
Lundmarksalen, Astronomihuset, Sölvegatan 27, Lund. Join via zoom: https://lu-se.zoom.us/j/63479321502
defense date
2022-11-18 13:00:00
ISBN
9789180394116
9789180394123
project
Stellar kinematics in surveys and simulations
language
English
LU publication?
yes
id
d13cdc66-ec2e-4db9-a83d-8f1845d1bde3
date added to LUP
2022-10-18 13:22:59
date last changed
2022-12-20 09:02:25
@phdthesis{d13cdc66-ec2e-4db9-a83d-8f1845d1bde3,
  abstract     = {{We study stellar motions in the Milky Way with N-body simulations and large astrometric samples from ESA's Gaia mission. We identify two kinematic populations for white dwarfs in the Solar neighbourhood. We also investigate the accreted halo and reveal two new structures. Finally, our simulations show that radial migration as a function of vertical action depends on disc mass.}},
  author       = {{Mikkola, Daniel}},
  isbn         = {{9789180394116}},
  keywords     = {{Galactic dynamics; stellar dynamics; simulations; Gaia; Galactic dynamics; Stellar kinematics; Numerical simulations; Statistical methods; Solar neighborhood}},
  language     = {{eng}},
  publisher    = {{Lund Observatory, Lund University}},
  school       = {{Lund University}},
  title        = {{Stellar kinematics in surveys and simulations}},
  url          = {{https://lup.lub.lu.se/search/files/126594707/Avhandling_Daniel_Mikkola_web.pdf}},
  year         = {{2022}},
}