The dynamics of an extremely young cluster probed for the first time - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2010

The dynamics of an extremely young cluster probed for the first time

Résumé

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.

Dates et versions

hal-00460476 , version 1 (01-03-2010)

Identifiants

Citer

C. Ducourant, Sylvain Bontemps, D. Despois, Philippe André, Ramachrisna Teixeira, et al.. The dynamics of an extremely young cluster probed for the first time. 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, Aug 2009, Rio de janeiro, Brazil. pp.386-389, ⟨10.1017/S1743921309991438⟩. ⟨hal-00460476⟩
84 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More