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

C. Ducourant 1 Sylvain Bontemps 2 D. Despois 2 Philippe André 3 Ramachrisna Teixeira Estelle Moraux 4 Jerome Bouvier 4 A. Krone-Martins 5, 1 Dimitris Sinachopoulos
1 M2A 2010
L3AB - Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux, OASU - Observatoire aquitain des sciences de l'univers, LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac], Université Sciences et Technologies - Bordeaux 1
2 FORMATION STELLAIRE 2010
L3AB - Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux, OASU - Observatoire aquitain des sciences de l'univers, LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac], Université Sciences et Technologies - Bordeaux 1
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 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.
Type de document :
Communication dans un congrès
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. 266, pp.386-389, 2010, 〈10.1017/S1743921309991438〉
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https://hal.archives-ouvertes.fr/hal-00460476
Contributeur : Marie-Paule Pomies <>
Soumis le : lundi 1 mars 2010 - 12:49:45
Dernière modification le : mardi 29 mai 2018 - 12:51:06

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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. 266, pp.386-389, 2010, 〈10.1017/S1743921309991438〉. 〈hal-00460476〉

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