Measuring bar pattern speeds from single simulation snapshots
We describe methods to measure simultaneously the orientation angle ψ and pattern speed Ω from single snapshots of simulated barred galaxies. Unlike previous attempts, our approach is unbiased, precise, and consistent in the sense that ψ = ∫ dt. It can be extended to obtain the rate and axis of rot...
Gespeichert in:
| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2023
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| In: |
Monthly notices of the Royal Astronomical Society
Year: 2023, Jahrgang: 518, Heft: 2, Pages: 2712-2718 |
| ISSN: | 1365-2966 |
| DOI: | 10.1093/mnras/stac3184 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/stac3184
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| Verfasserangaben: | Walter Dehnen, Marcin Semczuk and Ralph Schönrich |
MARC
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| 520 | |a We describe methods to measure simultaneously the orientation angle ψ and pattern speed Ω from single snapshots of simulated barred galaxies. Unlike previous attempts, our approach is unbiased, precise, and consistent in the sense that ψ = ∫ dt. It can be extended to obtain the rate and axis of rotation, i.e. the vector Ω. We provide computer code implementing our method. | ||
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