Selection of physical pairs and triplets. Upper panel: 2D distribution of the line-of-sight velocity difference and projected distance for isolated-pair and isolated-triplet candidates with respect to the brightest A galaxy. Colours correspond to the galaxy counts according to the colour bar. Middle panel: absolute values of the line-of-sight velocity difference Δν = | νA − νN | (black histogram), and the corresponding Gaussian distribution fits for σ between 70 and 100 km s-1 (grey curves) with the best fit (blue curve) within the first 250 km s-1 (red dashed line). The corresponding 2σ is shaded. Lower panel: probability density function (PDF) for neighbour galaxies within 2σ over PDF for the background flat population selected in the interval 300 < Δν < 500 km s-1, as a function of the distance to the A galaxy. Red dashed and blue dash-dotted lines correspond to the median and mean values in the different distance intervals, respectively. The inner regions up to 250 and 450 kpc are shaded.
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.