Ionization of the diffuse gas in galaxies: Hot low-mass evolved stars at work

Details Ionization of the diffuse gas in galaxies: Hot low-mass evolved stars at work Ionization of the diffuse gas in galaxies: Hot low-mass evolved stars at work

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011rmxac..40..118f&link_type=abstract

XIII Latin American Regional IAU Meeting (Eds. W. J. Henney & S. Torres-Peimbert) Revista Mexicana de Astronomía y Astrofísica (

Astronomy and Astrophysics

Astronomy

Galaxies: Individual (Ngc 891), Galaxies: Ism, Galaxies: Abundances, Stars: Agb And Post-Agb

Scientific paper

The Diffuse Ionized Medium (DIG) is visible through its faint optical line emission outside classical HII regions (Reynolds 1971) and turns out to be a major component of the interstellar medium in galaxies. OB stars in galaxies likely represent the main source of ionizing photons for the DIG. However, an additional source is needed to explain the increase of [NII]/Hα, [SII]/Hα with galactic height.

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