Heating the warm ionized medium

Details Heating the warm ionized medium Heating the warm ionized medium

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...400l..33r&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 400, no. 1, p. L33, L34.

Astronomy and Astrophysics

Astrophysics

38

H I Regions, Heating, Interstellar Matter, Ionized Gases, Photoionization, Cosmic Dust, Electron Density (Concentration), Forbidden Bands, Interstellar Gas

Scientific paper

If photoelectric heating by grains within the diffuse ionized component of the interstellar medium is 10 exp -25 ergs/s per H atom, the average value within diffuse H I regions, then grain heating equals or exceeds photoionization heating of the ionized gas. This supplemental heat source would obviate the need for energetic ionizing photons to balance the observed forbidden-line cooling and could be responsible in part for enhanced intensities of some of the forbidden lines.

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