Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-23T12:19:51.139Z Has data issue: false hasContentIssue false
  • English
  • Français

Fragmentation and dynamics in Massive Dense Cores in Cygnus-X

Published online by Cambridge University Press:  27 April 2011

T. Csengeri ,
S. Bontemps ,
N. Schneider  and
F. Motte
T. Csengeri
Affiliation:
Laboratoire AIM, CEA - INSU/CNRS - Université Paris Diderot, IRFU/SAp CEA-Saclay, 91191 Gif-sur-Yvette, France email: [email protected]
S. Bontemps
Affiliation:
OASU/LAB-UMR5804, CNRS, Université Bordeaux 1, 33270 Floirac, France
N. Schneider
Affiliation:
Laboratoire AIM, CEA - INSU/CNRS - Université Paris Diderot, IRFU/SAp CEA-Saclay, 91191 Gif-sur-Yvette, France email: [email protected]
F. Motte
Affiliation:
Laboratoire AIM, CEA - INSU/CNRS - Université Paris Diderot, IRFU/SAp CEA-Saclay, 91191 Gif-sur-Yvette, France email: [email protected]
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.

A systematic, high angular-resolution study of IR-quiet Massive Dense Cores (MDCs) of Cygnus-X in continuum and high-density molecular tracers is presented. The results are compared with the quasi-static and the dynamical evolutionary scenario. We find that the fragmentation properties are not compatible with the quasi-static, monolithic collapse scenario, nor are they entirely compatible with the formation of a cluster of mostly low-mass stars. The kinematics of MDCs shows individual velocity components appearing as coherent flows, which indicate important dynamical processes at the scale of the mass reservoir around high-mass protostars.

Keywords

stars: formationISM: kinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S270: Computational Star Formation , May 2010 , pp. 53 - 56
Copyright
Copyright © International Astronomical Union 2011

References

Bonnell, I. A., Bate, M. R., Clarke, C. J., & Pringle, J. E., 2001 MNRAS, 323, 785CrossRefGoogle Scholar
Bonnell, I. A. & Bate, M. R., 2006 MNRAS, 370, 488CrossRefGoogle Scholar
Bontemps, S., Motte, F., Csengeri, T., & Schneider, N., 2010 A&A, in press, ArXiv:astro-ph/0909.2315Google Scholar
Csengeri, T., Bontemps, S., Schneider, N., Motte, F., & Dib, S., 2010 A&A, submitted, ArXiv:astro-ph/1009.0598Google Scholar
Dib, S., Hennebelle, P., Pineda, J. E., Csengeri, T., Bontemps, S., Audit, E., & Goodman, A. A.. 2010 ApJ, in press, ArXiv:astro-ph/1003.5115Google Scholar
Heitsch, F., Hartmann, L. W., Slyz, A. D., Devriendt, J. E. G., & Burkert, A., 2008 ApJ, 674, 316CrossRefGoogle Scholar
Klessen, R. S. & Hennebelle, P., ArXiv:astro-ph/0912.0288Google Scholar
McKee, C. F. & Tan, J. C., 2002 Nature, 416, 59CrossRefGoogle Scholar
Motte, F., André, P. & Neri, R., 1998 A&A, 336, 150Google Scholar
Padoan, P., Juvela, M., Goodman, A. A. & Nordlund, Å, 2001 ApJ, 553, 227CrossRefGoogle Scholar
Schneider, N., Csengeri, T., Bontemps, S., Motte, F., Simon, R., Hennebelle, P., Federrath, C., & Klessen, R., 2010 A&A, in press, ArXiv:astro-ph/1003.4198Google Scholar
Vazquez-Semadeni, E., Shadmehri, M., & Ballesteros-Paredes, J., 2002 ArXiv:astro-ph/0208245Google Scholar
Vázquez-Semadeni, E., Gómez, G. C., Jappsen, A. K., Ballesteros-Paredes, J., González, R. F., & Klessen, R. S., 2007 ApJ, 657, 870CrossRefGoogle Scholar