Density bounding of giant HII regions and the ionization of the diffuse interstellar medium

Bibcode
1998PASA...15...83B
DOI
10.1071/AS98083
Beckman, J. E.; Rozas, M.; Knapen, J. H.
Bibliographical reference

Publications Astronomical Society of Australia, vol. 15, no. 1, p. 83-85

Advertised on:
4
1998
Number of authors
3
IAC number of authors
1
Citations
7
Refereed citations
4
Description
Three different types of evidence are presented in favour of the hypothesis that the HII regions in disk galaxies with H-alpha luminosities greater than a critical value of 10^(38.6)^ erg s^(-1)^ are density bounded, and that the escaping Lyman continuum photons from these are the principal ionizing agents for the diffuse ISM in disk galaxies. This has important implications for the ionization of the intergalactic medium, and for computed star formation rates in spirals.
Type
Refereed
Interstellar medium
Intergalactic medium
Spiral galaxies

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