Abell 76 and Abell 1307 velocity catalogues

Our study is based on 231 and 164 spectroscopic redshifts, for the clusters A76 and A1307, respectively, obtained mostly with the Telescopio Nazionale Galileo, and complemented with others collected from the SDSS DR16 spectroscopic database and the literature.

We find that A76 and A1307 are two galaxy clusters at z=0.0390 and 0.0815, respectively, with velocity dispersions of 650+/-56km/s and 863+/-85km/s, and showing velocity distributions following, in practice, Gaussian profiles. From our dynamical analysis, X-ray studies and SZ-Planck emission, we obtain a mean total mass M_500_=1.7+/-0.6x10^14^M_{sun}_ and 3.5+/-1.3x10^14^M_{sun}_ for A76 and A1307, respectively. Using the SDSS DR16 photometric database we find that the spatial distribution of likely cluster members in the case of A76 is very anisotropic, while A1307 shows a compact distribution of galaxies, but double peaked and elongated in the south-north direction.