Free Access

Fig. 8

thumbnail

Positional data of W Aql. The positions are taken from 9 catalogues (see Table 3 and text) and cover the years 1913 to 2002. The (red) lines indicate the linear fit to the data points. The scatter is of the order of the angular separation of the binary system on the sky that is expected for a variability-induced movement. The positions of W Aql in the last century show a trend for a movement along PA = 38° with a space velocity vLSR = 21.6 ± 4.1 km s-1.

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.