Table 7
TGAS astrometric parameters.
| Cluster | ϖ ± ϵϖ |  |
 |
 |
 |
|---|---|---|---|---|---|
| (mas) | (mas yr−1) | (mas yr−1) | (pc) | (mag) | |
| NGC 2451A | 5.293 ± 0.069 | − 20.994 ± 0.186 | 15.267 ± 0.168 |   |
  |
| NGC 2451B | 2.773 ± 0.089 | − 9.876 ± 0.305 | 4.675 ± 0.252 |   |
  |
| NGC 2516 | 2.586 ± 0.063 | − 4.662 ± 0.026 | 11.066 ± 0.027 |   |
  |
| NGC 2547 | 2.746 ± 0.091 | − 8.935 ± 0.025 | 4.388 ± 0.025 |   |
  |
| IC 2391 | 6.850 ± 0.064 | − 25.255 ± 0.029 | 23.337 ± 0.029 |   |
  |
| IC 2602 | 6.757 ± 0.069 | − 17.213 ± 0.015 | 10.544 ± 0.014 |   |
  |
| IC 4665 | 2.732 ± 0.091 | − 0.825 ± 0.023 | − 8.565 ± 0.018 |   |
  |
| NGC 6633 | 2.432 ± 0.066 | 1.325 ± 0.038 | − 1.698 ± 0.029 |   |
  |
Notes. Thetable lists: mean cluster parallaxes, ϖ, and proper motions, 
, μδ, estimated from the selected bona fide cluster members as weighted averages. The derived spatial distance,d = 1∕ϖ, and the distance modulus, DM = m0 − M = −5logϖ − 5, are also reported. The systematic errors correspond to the nominal TGAS systematic uncertainty,
mas. These dominate the error budget. R: Random; S: Systematic.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.