Table 2
Kinematic data of π1 Gru from the Hipparcos (van Leeuwen 2007) and Tycho-2 (Høg et al. 2000) catalogues.
| Hipparcos | Tycho-2 | |
|
|
||
| μα ∗ (mas/yr) | 28.48 ± 0.94 | 33.4 ± 1.1 |
| μδ (mas/yr) | −12.14 ± 0.60 | −17.7 ± 1.2 |
| vLSR (km s-1) | 11.7 ± 2.5 | 15.0 ± 2.8 |
| i (°) | −40.4 ± 15.0 | −30.4 ± 13.2 |
| PA (°) | 81.3 ± 2.9 | 103.1 ± 4.0 |
Notes. vLSR is the velocity of the star corrected for the solar motion, i and PA the inclination to the sky plane and position angle of the space motion. The parallax ϖ = 6.13 ± 0.76 mas from van Leeuwen (2007), the radial velocity Vr = −5.7 ± 1.5 km s-1 from Van Eck et al. (2000), and the solar motion vector (U,V,W)⊙ = (8.50 ± 0.29,13.38 ± 0.43,6.49 ± 0.26) from Coşkunoǧlu et al. (2011) were used to derive vLSR, i, and PA.
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.