2 papers
astro-ph.CO2025
Signatures and bias assessment of rotation in galaxy cluster members
Davide Castellani, Giovanni Ferrami, Claudio Grillo +1
We investigate the possible presence of systematic rotation in the member galaxies of a sample of 17 nearby (), rich (at least 80 identified members) Abell clusters. We also…
astro-ph.GA2015
Spiral density waves in the outer galactic gaseous discs
S. A. Khoperskov, G. Bertin
Deep HI observations of the outer parts of disc galaxies demonstrate the frequent presence of extended, well-developed spiral arms far beyond the optical radius. To understand the…