Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...399...66s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 399, no. 1, p. 66-75.
Astronomy and Astrophysics
Astrophysics
43
Cooling Flows (Astrophysics), Elliptical Galaxies, Evaporation, High Temperature Gases, Interstellar Gas, X Ray Astronomy, Astronomical Models, Conductive Heat Transfer, Emission Spectra, Radiative Heat Transfer
Scientific paper
Simple theoretical models of thermal interaction between hot and cold gas phases are explored. Quantitative solutions for the temperature structure of the X-ray gas in the conduction model are presented for up-to-date radiative cooling rates in a form that allows straightforward comparison with observation. Good agreement with the X-ray data is obtained. The relative strengths of intermediate-temperature X-ray emission lines are in significantly better agreement with a simple conduction model than with published cooling flow models. The evoporation process is examined in this context. The model for the conductive interface adopts 10,000 K as the inner boundary. It is found that hydrostatic solutions exist, and there does not need to be any evaporation of the infalling cloud.
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