Kawata, D;
Baba, J;
Ciucă, I;
Cropper, M;
Grand, RJJ;
Hunt, JAS;
Seabroke, G;
(2018)
Radial distribution of stellar motions in Gaia DR2.
Monthly Notices of the Royal Astronomical Society: Letters
, 479
(1)
L108-L112.
10.1093/mnrasl/sly107.
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Abstract
By taking advantage of the superb measurements of position and velocity for an unprecedented large number of stars provided in Gaia DR2, we have generated the first maps of the rotation velocity, V_{rot}, and vertical velocity, V_{z}, distributions as a function of the Galactocentric radius, R_{gal}, across a radial range of 5 < R_{gal} < 12 kpc. In the R − V_{rot} map, we have identified many diagonal ridge features, which are compared with the location of the spiral arms and the expected outer Lindblad resonance of the Galactic bar. We have detected also radial wave-like oscillations of the peak of the vertical velocity distribution.
| Type: | Article |
|---|---|
| Title: | Radial distribution of stellar motions in Gaia DR2 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnrasl/sly107 |
| Publisher version: | https://doi.org/10.1093/mnrasl/sly107 |
| 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: | Galaxy: disc, Galaxy: evolution, Galaxy: kinematics and dynamics |
| 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/10055351 |
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