Hostname: page-component-6bf8c574d5-b4m5d Total loading time: 0 Render date: 2025-02-14T12:00:49.926Z Has data issue: false hasContentIssue false
  • English
  • Français

PDRs and XDRs

Published online by Cambridge University Press:  25 November 2011

M. Röllig ,
R. Simon ,
V. Ossenkopf ,
J. Stutzki  and
M.G. Wolfire
M.G. Wolfire*
Affiliation:
Astronomy Department, University of Maryland, College Park, MD 20742, USA. e-mail: [email protected] ;
Get access

Abstract

Photodissociation regions (PDRs) are gas phases in which far-ultraviolet radiation plays a significant role in the heating and/or chemistry (Tielens & Hollenbach 1985). X-ray dissociation regions (XDRs) are regions in which X-rays dominate the heating and/or chemistry (Moloney et al. 1996). Much progress has been mode in modeling PDRs (e.g., Röllig et al. 2007) and XDRs (e.g., Meijerink et al. 2007) and the models predict several line intensities and line ratios of atomic and molecular species that are good diagnostics for discriminating between the two. I will discuss the theoretical models in light of the most recent observations.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 52: Conditions and Impact of Star Formation , 2011 , pp. 141 - 146
Copyright
© EAS, EDP Sciences 2011

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

Bakes, E.L.O., & Tielens, A.G.G.M., 1994, ApJ, 427, 822 CrossRef
Dedes, C., et al., 2010, A&A, 521, L24
Grenier, I.A., Casandjian, J.-M., & Terrier, R., 2005, Science, 307, 1292 CrossRef
Kaufman, M.J., Wolfire, M.G., Hollenbach, D.J., et al., 1999, ApJ, 527, 795 CrossRef
Langer, W.D., et al., 2010, A&A, 521, L17
Maloney, P.R., Hollenbach, D.J., & Tielens, A.G.G.M., 1996, ApJ, 466, 561 CrossRef
Meijerink, R., Glassgold, A.E., & Najita, J.R., 2008, ApJ, 676, 518 CrossRef
Meijerink, R., & Spaans, M., 2005, A&A, 436, 397
Meijerink, R., Spaans, M., & Israel, F.P., 2006, ApJ, 650, L103 CrossRef
Meijerink, R., Spaans, M., & Israel, F.P., 2007, A&A, 461, 793
Natta, A., & Hollenbach, D., 1998, A&A, 337, 517
Padoan, P., Jones, B.J.T., & Nordlund, A.P., 1997, ApJ, 474, 730 CrossRef
Röllig, M., et al., 2007, A&A, 467, 187
Solomon, P.M., Rivolo, A.R., Barrett, J., & Yahil, A., 1987, ApJ, 319, 730 CrossRef
Tielens, A.G.G.M., & Hollenbach, D., 1985, ApJ, 291, 722 CrossRef
van Dishoeck, E.F., & Black, J.H., 1988, ApJ, 334, 771 CrossRef
van Kempen, T.A., et al., 2010, A&A, 518, L121
van der Werf, P.P., et al., 2010, A&A, 518, L42
Weingartner, J.C., & Draine, B.T., 2001, ApJS, 134, 263 CrossRef
Woitke, P., Kamp, I., & Thi, W.-F., 2009, A&A, 501, 383
Wolfire, M.G., Hollenbach, D., & McKee, C.F., 2010, ApJ, 716, 1191 CrossRef
Wolfire, M.G., Hollenbach, D., McKee, C.F., et al., 1995, ApJ, 443, 152 CrossRef
Wolfire, M.G., McKee, C.F., Hollenbach, D., et al., 2003, ApJ, 587, 278 CrossRef