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Table 3
Kinematics of stars in the post-merger thin and thick old thick disks and of the new stars in disk galaxies heated by different physical processes.
| Old stars |z| ≤ 1 kpc | Old stars |z| > 1 kpc | New stars | |||||||
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| Heating mechanism | fgas | Mass | vt | Lag | Mass fraction | vt | Lag | Mass fraction | vt |
| [stellar mass] | [km s-1] | [km s-1] | [stellar mass] | [km s-1] | [km s-1] | [stellar mass] | [km s-1] | ||
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| 1:10 merger (direct) | 0. | 0.38 | 214. | n.d. | 0.62 | 181. | n.d. | – | – |
| 1:10 merger (retrograde) | 0. | 0.28 | 203. | n.d. | 0.72 | 176. | n.d. | – | – |
| 1:10 merger (direct) | 0.1 | 0.34 | 208. | 42. | 0.65 | 175. | 75. | 0.01 | 250. |
| 1:10 merger (retrograde) | 0.1 | 0.23 | 190. | 60. | 0.77 | 179. | 71. | 0.001 | 250. |
| 1:10 merger (direct) | 0.2 | 0.4 | 195. | 24. | 0.58 | 170. | 49. | 0.015 | 219. |
| 1:10 merger (retrograde) | 0.2 | 0.24 | 183. | 41. | 0.75 | 172. | 52. | 0.004 | 224. |
| 2 × (1:10) merger | 0.1 | 0.22 | 182. | 68. | 0.77 | 155. | 95. | 0.01 | 250. |
| 2 × (1:10) merger | 0.2 | 0.25 | 162. | 52. | 0.74 | 144. | 70. | 0.01 | 214. |
| secular | 0.1 | 0.79 | 230. | 24. | 0.19 | 210. | 44. | 0.015 | 254. |
| secular | 0.2 | 0.91 | 214. | 16. | 0.07 | 200. | 30. | 0.019 | 230. |
| clumpy | 0.5 | 0.53 | 203. | 17. | 0.49 | 183. | 37. | 0.016 | 220. |
Notes. For old stars in the thin and the thick disks the rotational lag is defined with respect to the tangential velocity vt of the new stars.
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