Stellar kinematics in surveys and simulations

Daniel Mikkola

Stellar kinematics in surveys and simulations

Daniel Mikkola

Research output: Thesis › Doctoral Thesis (compilation)

172 Downloads (Pure)

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.

Original language	English
Qualification	Doctor
Awarding Institution
Supervisors/Advisors	Hobbs, David, Supervisor Mcmillan, Paul, Assistant supervisor
Award date	2022 Nov 18
Place of Publication	Lund
Publisher	Lund Observatory, Lund University
ISBN (Print)	9789180394116
ISBN (electronic)	9789180394123
Publication status	Published - 2022

Bibliographical note

Defence details
Date: 2022-11-18
Time: 13:00
Place: Lundmarksalen, Astronomihuset, Sölvegatan 27, Lund. Join via zoom: https://lu-se.zoom.us/j/63479321502
External reviewer(s)
Name: Martig, Marie
Title: Doctor
Affiliation: Astrophysics Research Institute, Liverpool John Moores University
---

Subject classification (UKÄ)

Astronomy, Astrophysics and Cosmology

Free keywords

Galactic dynamics
Stellar kinematics
Numerical simulations
Statistical methods
Solar neighborhood

Access to Document

kappaFinal published version, 13.2 MBLicence: CC BY-NC-SA
Complete versionLicence: CC BY-NC-SA

Cite this

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title = "Stellar kinematics in surveys and simulations",

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.",

keywords = "Galactic dynamics, stellar dynamics, simulations, Gaia, Galactic dynamics, Stellar kinematics, Numerical simulations, Statistical methods, Solar neighborhood",

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note = "Defence details Date: 2022-11-18 Time: 13:00 Place: Lundmarksalen, Astronomihuset, S{\"o}lvegatan 27, Lund. Join via zoom: https://lu-se.zoom.us/j/63479321502 External reviewer(s) Name: Martig, Marie Title: Doctor Affiliation: Astrophysics Research Institute, Liverpool John Moores University --- ",

year = "2022",

language = "English",

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publisher = "Lund Observatory, Lund University",

type = "Doctoral Thesis (compilation)",

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T1 - Stellar kinematics in surveys and simulations

AU - Mikkola, Daniel

N1 - Defence details Date: 2022-11-18 Time: 13:00 Place: Lundmarksalen, Astronomihuset, Sölvegatan 27, Lund. Join via zoom: https://lu-se.zoom.us/j/63479321502 External reviewer(s) Name: Martig, Marie Title: Doctor Affiliation: Astrophysics Research Institute, Liverpool John Moores University ---

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

KW - Galactic dynamics

KW - stellar dynamics

KW - simulations

KW - Gaia

KW - Galactic dynamics

KW - Stellar kinematics

KW - Numerical simulations

KW - Statistical methods

KW - Solar neighborhood

M3 - Doctoral Thesis (compilation)

SN - 9789180394116

PB - Lund Observatory, Lund University

CY - Lund

ER -

Stellar kinematics in surveys and simulations

Abstract

Bibliographical note

Subject classification (UKÄ)

Free keywords

Access to Document

Other files and links

Fingerprint

The velocity distribution of white dwarfs in Gaia EDR3

Radial migration and vertical action in N-body simulations