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Relating The Origins Of Disk Bar Structure To Star Formation And Stellar Dynamics In Simulations Of Resolved Galaxies
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| Title: | Relating The Origins Of Disk Bar Structure To Star Formation And Stellar Dynamics In Simulations Of Resolved Galaxies |
| Other Titles: | 円盤銀河のバー構造の起源とその銀河内の星形成と星の動径移動に与える影響について |
| Authors: | Iles, Elizabeth Jayne Latrobe Browse this author |
| Issue Date: | 23-Mar-2023 |
| Publisher: | Hokkaido University |
| Abstract: | Simulation results initialised from observations of nearby NGC4303 and NGC3627 are used to investigate trends in the star formation and stellar dynamics in the early periods (≤ 1 Gyr) of bar formation and evolution. Three simulated disk galaxies which evolve into late-type barred-spirals are presented, each representative of either isolated bar evolution, motivated by disk instability (IsoB, TideNC) or, a tidally affected, interaction-driven development (TideB). These disks are then used to assess whether such different mechanisms capable of driving the formation of galactic bars, will also differently affect the impact of the bar on the stellar populations and star-forming ISM in the host-galaxy. It is apparent that the presence of a bar significantly impacts the stellar properties in these barred disks. It is also apparent that galaxies with visibly similar bars formed in differing isolated and tidally-driven conditions can evolve with clearly distinguishable differences, particularly in the spatially dependent star forming history. By constraining attributes within the measurable stellar properties of disk galaxies in this manner, it may be possible to identify characteristics which act as tracers for the specific origins of bar formation and thus, allow us to determine the evolutionary histories of resolved galaxies. |
| Conffering University: | 北海道大学 |
| Degree Report Number: | 甲第15276号 |
| Degree Level: | 博士 |
| Degree Discipline: | 理学 |
| Examination Committee Members: | (主査) 教授 岡本 崇, 教授 鈴木 久男, 教授 徂徠 和夫, 助教 Dragan Salak |
| Degree Affiliation: | 理学院（宇宙理学専攻） |
| Type: | theses (doctoral) |
| URI: | http://hdl.handle.net/2115/89529 |
| Appears in Collections: | 課程博士 (Doctorate by way of Advanced Course) > 理学院(Graduate School of Science)
学位論文 (Theses) > 博士 （理学）
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