Hostname: page-component-6bf8c574d5-h6jzd Total loading time: 0.001 Render date: 2025-02-22T23:04:43.559Z Has data issue: false hasContentIssue false
  • English
  • Français

Structure of the turbulent atomic gas and formation of molecular clouds

Published online by Cambridge University Press:  04 October 2008

C. Kramer ,
S. Aalto ,
R. Simon ,
P. Hennebelle  and
E. Audit
P. Hennebelle
Affiliation:
École Normale Supérieure and Observatoire de Paris, France
E. Audit
Affiliation:
Service d'Astrophysique, Commissariat à l'Énergie Atomique, France
Get access

Abstract

We present 3D high resolution numerical simulations of turbulent converging interstellar atomic hydrogen flows. First, we report pure hydrodynamical simulations from which we infer statistics of the CNM structures. We find that the CNM structures are characterized by a mass spectrum dN/dM ∝ M-1.7-1.8, a mass-size relation M ∝ L2.3-2.5, and a velocity dispersion σ ∝ L0.4-05. These are reminiscent of what has been inferred for CO molecular clumps. Then we present a 3D calculation, which includes magnetic field and self-gravity with the purpose of studying the formation of molecular clouds.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 31: Far-Infrared Workshop 2007 , 2008 , pp. 15 - 18
Copyright
© EAS, EDP Sciences, 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Audit, E., & Hennebelle, P., 2005, A&A, 433, 1
de Avillez, M., & Breitschwerdt, D., 2005, A&A, 436, 585
Field, G., Goldsmith, D., & Habing, H., 1969, ApJ, 155, L149 CrossRef
Gazol, A., Vázquez-Semadeni, E., & Kim, J., 2005, ApJ, 630, 911 CrossRef
Heithausen, A., Bensch, F., Stutzki, J., Falgarone, F., & Panis, J.-F., 1998, A&A, 331, L65
Heitsch, F., Slyz, A., Devriendt, J., Hartmann, L., & Burkert, A., 2006, ApJ, 648, 1052 CrossRef
Heitsch, F., Hartmann, L., Burkert, A., Slyz, A., & Devriendt, J., 2007 [arXiv0709/2451]
Hennebelle, P., & Pérault, M., 1999, A&A, 351, 309
Hennebelle, P., & Pérault, M., 2000, A&A, 359, 1124
Hennebelle, P., & Audit, E., 2007, A&A, 465, 431
Hennebelle, P., Audit, E., & Miville-Deschènes, M.-A., 2007, A&A, 465, 445
Kramer, C., Stutzki, J., Rohrig, R., & Corneliussen, U., 1998, A&A, 329, 249
Koyama, H., & Inutsuka, S., 2000, ApJ, 532, 980 CrossRef
Koyama, H., & Inutsuka, S., 2002, ApJ, 564, L97 CrossRef
Kritsuk, A.G., & Norman, M.L., 2002, ApJ, 569, L127 CrossRef
Press, W., & Schechter, P., 1974, ApJ, 187, 425 CrossRef
Vázquez-Semadeni, E., Ryu, D., Passot, T., González, R., & Gazol, A., 2006, ApJ, 643, 245 CrossRef
Vázquez-Semadeni, E., Gómez, G., Jappsen, K., et al., 2007, ApJ, 657, 870 CrossRef
Wolfire, M.G., Hollenbach, D., & McKee, C.F., 1995, ApJ, 443, 152 CrossRef