We use Hα measurements of complete sets of H II regions in disc galaxies to compute the fraction of ionizing photons which escape from them using the hypothesis of density bounding. The escaping flux is more than enough to ionize the observed diffuse ionized gas (DIG) and the balance implies that an important fraction of the flux escapes into the intergalactic medium (IGM).
|Number of pages||1|
|Journal||Astrophysics and Space Science|
|Issue number||Suppl. 1|
|Publication status||Published - 1 Dec 2001|
- H II regions