Free Access

Fig. 2


Possible secular trajectories for the HD 74156 system seen in the (ω1,I) plane (left), and in the (ω1,e1) plane (right). We show the trajectories using the quadrupolar approximation (top), corresponding to the level curves of constant energy, and the octupolar approximation (bottom). The dashed black curves in the (ω1,I) plane correspond to the separatrix between the circulation and libration zones of ω1. The colors are preserved in all pictures, each one corresponding to a given value of the total angular momentum of the system (determined by different values of the initial mutual inclination). All trajectories are compatible to the present knowledge for this system (Table 2).

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.