Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-14T08:12:17.545Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  18 January 2010

Christine Ducourant ,
Sylvain Bontemps ,
Didier Despois ,
Philippe André ,
Ramachrisna Teixeira ,
Estelle Moraux ,
Jerome Bouvier ,
Alberto Krone–Martins  and
Dimitris Sinachopoulos
Christine Ducourant
Affiliation:
Université de Bordeaux, Observatoire Aquitain des Sciences de l'Univers, 2 rue de l'Observatoire, BP 89, F-33271 Floirac Cedex, France CNRS, UMR 5804, Laboratoire d'Astrophysique de Bordeaux, 2 rue de l'Observatoire, BP 89, F-33271 Floirac Cedex, France email: ducourant@obs.u-bordeaux1.fr
Sylvain Bontemps
Affiliation:
Université de Bordeaux, Observatoire Aquitain des Sciences de l'Univers, 2 rue de l'Observatoire, BP 89, F-33271 Floirac Cedex, France CNRS, UMR 5804, Laboratoire d'Astrophysique de Bordeaux, 2 rue de l'Observatoire, BP 89, F-33271 Floirac Cedex, France email: ducourant@obs.u-bordeaux1.fr
Didier Despois
Affiliation:
Université de Bordeaux, Observatoire Aquitain des Sciences de l'Univers, 2 rue de l'Observatoire, BP 89, F-33271 Floirac Cedex, France CNRS, UMR 5804, Laboratoire d'Astrophysique de Bordeaux, 2 rue de l'Observatoire, BP 89, F-33271 Floirac Cedex, France email: ducourant@obs.u-bordeaux1.fr
Philippe André
Affiliation:
CEA, DSM, IRFU, Service d'Astrophysique, 91191 Gif-sur-Yvette, France; Laboratoire AIM, CEA/DSM – CNRS – Université Paris Diderot, IRFU/Service d'Astrophysique, CEA–Saclay, 91191 Gif-sur-Yvette, France
Ramachrisna Teixeira
Affiliation:
Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, Rua do Matão 1226, Cidade Universitária, São Paulo, Brazil
Estelle Moraux
Affiliation:
Laboratoire d'Astrophysique de l'Observatoire de Grenoble, 414, Rue de la Piscine, Domaine Universitaire, BP 53, 38041 Grenoble Cedex 09, France
Jerome Bouvier
Affiliation:
Laboratoire d'Astrophysique de l'Observatoire de Grenoble, 414, Rue de la Piscine, Domaine Universitaire, BP 53, 38041 Grenoble Cedex 09, France
Alberto Krone–Martins
Affiliation:
Université de Bordeaux, Observatoire Aquitain des Sciences de l'Univers, 2 rue de l'Observatoire, BP 89, F-33271 Floirac Cedex, France CNRS, UMR 5804, Laboratoire d'Astrophysique de Bordeaux, 2 rue de l'Observatoire, BP 89, F-33271 Floirac Cedex, France email: ducourant@obs.u-bordeaux1.fr Instituto de Astronomia, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, Rua do Matão 1226, Cidade Universitária, São Paulo, Brazil
Dimitris Sinachopoulos
Affiliation:
National Observatory of Athens, P. O. Box 20048, Thissio 11810, Athens, Greece
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Keywords

stars: distancesstars: kinematicsstars: evolutionstars: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S266: Star clusters: basic galactic building blocks throughout time and space , August 2009 , pp. 386 - 389
Copyright
Copyright © International Astronomical Union 2010

References

André, P., Belloche, A., Motte, F., & Peretto, N. 2007, A&A, 472, 519Google Scholar
André, P., Bouwman, J., Belloche, A., & Hennebelle, P. 2004, ApSS, 292, 325Google Scholar
Barsony, M., Ressler, M. E., & Marsh, K. A. 2005, ApJ, 630, 381CrossRefGoogle Scholar
Bontemps, S., et al. 1998, in: Yun, J. & Liseau, R. (eds.), Star Formation with the Infrared Space Observatory, ASP Conf. Ser., 132, p. 141Google Scholar
D'Antona, F. & Mazzitelli, I. 1994, ApJS, 90, 467CrossRefGoogle Scholar
Duchêne, G., Bouvier, J., Bontemps, S., André, P., & Motte, F. 2004, A&A, 427, 651Google Scholar
Ducourant, C., Teixeira, R., Chauvin, G., Daigne, G., LeCampion, J.-F. Campion, J.-F., Song, I., & Zuckerman, B. 2008, A&A (Letters), 477, L1,Google Scholar
Ducourant, C., Teixeira, R., Hambly, N. C., Oppenheimer, B. R., Hawkins, M. R. S., Rapaport, M., Modolo, J., & Lecampion, J. F. 2007, A&A, 470, 387Google Scholar
Duquennoy, A. & Mayor, M. 1991, A&A, 248, 485Google Scholar
Lada, E. A., Bally, J., & Stark, A. A. 1991, ApJ, 368, 432CrossRefGoogle Scholar
Lazorenko, P. F., Mayor, M., Dominik, M., Pepe, F., Segransan, D., & Udry, S. 2007, A&A, 471, 1057Google Scholar
Stamatellos, D., Ward–Thompson, D., Whitworth, A. P., & Bontemps, S. 2007, A&A, 462, 677Google Scholar
Teixeira, R., Ducourant, C., Chauvin, G., Krone–Martins, A., Song, I., & Zuckerman, B. 2008, A&A, 489, 825Google Scholar
de Zeeuw., P. T., Hoogerwerf, R., de Bruijne, J. H. J., Brown, A. G. A., & Blaauw, A. 1999, AJ, 117, 354CrossRefGoogle Scholar