Tootfinder

The longevity of the oldest open clusters: Structural parameters of NGC 188, NGC 2420, NGC 2425, NGC 2682, NGC 6791, NGC 6819
N. Alvarez-Baena (Instituto de F\'isica, Universidad de Antioquia, Medell\'in, Colombia), R. Carrera (INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, Bologna, Italy, INAF-Osservatorio Astronomico di Padova, Padova, Italy), H. Thompson (Department of Physics, University of Surrey, Guildford, UK), L. Balaguer-Nu\~nez (Institut d'Est…

The longevity of the oldest open clusters: Structural parameters of NGC 188, NGC 2420, NGC 2425, NGC 2682, NGC 6791, NGC 6819
Context: Open clusters' dynamical evolution is driven by stellar evolution, internal dynamics and external forces, which according to dynamical simulations, will evaporate them in a timescale of about 1 Ga. However, about 10\% of the known open clusters are older. They are special systems whose detailed properties are related to their dynamical evolution and the balance between mechanisms of cluster formation and dissolution. Aims:We investigate the spatial distribution and structural parameter…