Stellar kinematics in surveys and simulations
(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:
https://lup.lub.lu.se/record/d13cdc66-ec2e-4db9-a83d-8f1845d1bde3
- author
- Mikkola, Daniel LU
- supervisor
-
- David Hobbs LU
- Paul Mcmillan LU
- opponent
-
- Doctor Martig, Marie, Astrophysics Research Institute, Liverpool John Moores University
- organization
- publishing date
- 2022
- 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
- 9789180394123
- 9789180394116
- 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 = {{9789180394123}}, 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}}, }