Free Access

Fig. 10


H i surface density contours (white) derived from Ott et al. (2012) maps are superimposed onto the stellar density maps obtained with the matched filter technique (greyscale). Contour levels are 3, 9, 27, 81, 240, and 720 × 1019 cm-2. The levels of grey correspond to density of 3, 5, 10, 20, 40, and 80σ above the background, from the lightest to the darkest shade of grey.

This figure is made of several images, please see below:

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.