The dynamics of an extremely young cluster probed for the first time
Language
en
Communication dans un congrès
This item was published in
Proceedings of the International Astronomical Union, IAU Symposium Star clusters: basic galactic building blocks throughout time and space, vol 266, p386-389 (2010), Proceedings of the International Astronomical Union, IAU Symposium Star clusters: basic galactic building blocks throughout time and space, vol 266, p386-389 (2010), Star clusters: basic galactic building blocks throughout time and space, Proceedings of the International Astronomical Union, IAU Symposium, Rio de janeiro : Brésil (2009) , Volume Volume 266, p. 386-389, 2010, 2009-08-03, Rio de janeiro. 2010, vol. 266, p. 386-389
English Abstract
We present a proper-motion program that we have developed at ESO to measure, for the first time, proper motions of members of the nearby (125 pc), very young (4 × 105 yr) infrared ρ Ophiuchi cluster. Repeated imaging over ...Read more >
We present a proper-motion program that we have developed at ESO to measure, for the first time, proper motions of members of the nearby (125 pc), very young (4 × 105 yr) infrared ρ Ophiuchi cluster. Repeated imaging over an extended period will allow us to measure the global proper motion of the cluster and its velocity dispersion and will provide access to the ~ 1 km s‑1 velocities for objects as faint as K = 15.7 mag. Access to the velocity field of such an extremely young cluster is of crucial importance to investigate the origin and early evolution of open cluster systems.Read less <
English Keywords
stars: distances
stars: kinematics
stars: evolution
stars: formation
Origin
Hal imported