Open Access

Fig. 11.


Evolution of the galaxy major merger fraction up to z ∼ 6 from MUSE deep fields. Left: blue diamonds, green circles, yellow stars, and purple triangles are estimates of the fraction from the UDF-mosaic, Abell 2744, HDF-S, and COSMOS-Gr30 regions, respectively, whereas red squares correspond to the fraction for the combined analysis of the MUSE data. For the lowest redshift bin, fractions were computed without (filled symbols) and with (open symbols) members of the galaxy cluster A2744 and galaxy group COSMOS-Gr30. Right: evolution of the major merger fraction for two ranges of stellar mass, assuming first a constant separation limit of M = 109.5 M (grey and yellow circles show the MUSE estimates for low-mass and massive galaxies, respectively), then taking the median mass of the parent sample in each redshift bin as the limit (orange and purple triangles). As for the combined fraction of the left panel, the fractions were computed without taking into account the cluster and group members. The median stellar mass estimated in the range 107 − 1011 M for each redshift intervals are listed in Table 1.

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