Table 5.
Ejection velocities (relative to the rotating Galactic disk) and heliocentric distances of candidate MS stars that were possibly ejected from the Galactic disk beyond the velocity limit of classical mechanisms.
| Star | vej (km s−1) | Distance (kpc) | Reference |
|---|---|---|---|
| HVS 5 |
 |
 |
(1), (2) |
| B711 |
 |
 |
(1), (2) |
| B434 | 590 ± 20 |
 |
(1), (2) |
| LAMOST-HVS1 |
 |
 |
(3) |
| PG 1610+062 | 550 ± 20 |
 |
This work |
| HVS 7 | 530 ± 30 |
 |
(1), (2) |
| HVS 12 |
 |
 |
(1), (2) |
| LAMOST-HVS4 |
 |
27.9 ± 1.5 | (4) (a) |
| EC 19596−5356 |
 |
 |
(5) |
| HIP 56322 |
 |
 |
(5) |
| HIP 105912 |
 |
 |
(5) |
| HVS 8 |
 |
 |
(1), (2) |
| B733 | 450 ± 10 |
 |
(1), (2) |
| BD -2 3766 |
 |
 |
(5) |
| B485 |
 |
 |
(1), (2) |
| PHL 346 |
 |
 |
(5) |
| PB 5418 |
 |
 |
(5) |
| PG 1332+137 |
 |
 |
(5) |
| HIP 114569 |
 |
 |
(5) |
| PHL 2018 |
 |
 |
(5) |
| PG 1209+263 |
 |
 |
(5) |
| HD 271791 |
 |
21 ± 4 | This work (b) |
| PG 0914+001 |
 |
 |
(5) |
Notes. The given uncertainties are 1σ errors.
Assuming a MS nature, Li et al. (2018) give a Galactic rest-frame velocity at a disk intersection of 697 ± 12 km s−1, which transforms to the given ejection velocity.
Based on the distance and radial velocity from Heber et al. (2008) and on proper motions from Gaia DR2.
References. (1) Irrgang et al. (2018a); (2) Irrgang et al. (2018b); (3) Hattori et al. (2019); (4) Li et al. (2018); (5) Silva & Napiwotzki (2011).
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