Dehnen, Walter;
Semczuk, Marcin;
Schönrich, Ralph;
(2023)
Measuring bar pattern speeds from single simulation snapshots.
Monthly Notices of the Royal Astronomical Society
, 518
(2)
pp. 2712-2718.
10.1093/mnras/stac3184.
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Abstract
We describe methods to measure simultaneously the orientation angle ψ and pattern speed Ω=dψ/dt from single snapshots of simulated barred galaxies. Unlike previous attempts, which suffer from systematic errors of 5-25%, our approach is unbiased. It can be extended to obtain the rate and axis of rotation, i.e. the vector Ω. We provide computer code implementing our method.
| Type: | Article |
|---|---|
| Title: | Measuring bar pattern speeds from single simulation snapshots |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stac3184 |
| Publisher version: | https://doi.org/10.1093/mnras/stac3184 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Galaxies: structure, galaxies: kinematics and dynamics, methods: numerical |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10159672 |
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