Abstract
view Abstract Citations (116) References (36) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Photoionization of the Diffuse Galactic Gas Mathis, J. S. Abstract Observations recently published by Reynolds show that there is diffuse ionized gas (DIG) both in the Galactic plane and at high Galactic latitudes. Relative to normal H II regions, this gas shows strong [S II]/Hα, normal [N II]/Hα, and very weak [O III]/Hα. Models are presented for this gas, assuming that it is photoionized by O stars in the Galactic plane, that the ionized zone is in a steady state as regards both ionization and thermal balance, and that the DIG is also responsible for the pulsar dispersion measures. It is possible to obtain an excellent fit to the observations with a plausible mixture of spectral types for the ionizing stars. It is also shown that shocks are unlikely to be producing the diffuse emission lines. Publication: The Astrophysical Journal Pub Date: February 1986 DOI: 10.1086/163910 Bibcode: 1986ApJ...301..423M Keywords: Galactic Structure; Hydrogen Clouds; Interstellar Gas; Ionized Gases; O Stars; Photoionization; H Alpha Line; Ion Production Rates; Milky Way Galaxy; Shock Waves; Star Distribution; Supernova Remnants; Astrophysics; INTERSTELLAR: MATTER; STARS: EARLY-TYPE full text sources ADS |
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
