Free Access

Fig. 4

thumbnail

Left panel: recovery fractions of artificial stars inserted within the inner 500   pixel from the centre of the observed field plotted vs. the respective magnitude in the Ks- (lower abscissa) or H-band (upper abscissa). The full and dotted lines correspond to the recovery fractions for the Ks-band data in 2003 and 2008, respectively and the dash-dotted line shows the completeness in the H-band. The dashed line shows the total completeness for the stars after matching the two Ks-band and the H-band datasets. Only stars with Ks < 19   mag are used for the proper motion analysis, as indicated by the vertical dotted line. Right panel: Ks-band image from the second epoch with the overplotted contours representing a completeness level of 50% for the labelled magnitudes.

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.