Ref: ASTROimport-746

Molecular Emission From Filaments In Cooling Flows

Ferland, G. J. ; Fabian, A. C. ; Hatch, N. A. ; Johnstone, R. M. ; Porter, R. L. ; van Hoof, P. A. M. ; Williams, R. J. R.

published in Bulletin of the American Astronomical Society, 39, pp. 54.08 (2007)

Abstract: Infrared and radio observations reveal large reservoirs of molecular gas in optical filaments seen in cooling flows in clusters of galaxies. Recent Spitzer observations show that molecular hydrogen emission occurs over a broad range of temperatures, ranging from roughly 300 K to 2000 K. Central questions involve the history of the filaments, their total mass, and the energy sources responsible for the molecular hydrogen and low-ionization emission. Here we present numerical simulations of the effects of cosmic rays or thermalized heating upon otherwise well shielded molecular gas. We show diagnostic excitation and emission diagrams and discuss implications for the nature of the emission.

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Royal Observatory of Belgium > Astronomy & Astrophysics
Science Articles > Non-refereed Articles

 Record created 2016-07-01, last modified 2016-07-06