Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.152..223k&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 152, no. 2, Feb. 1989, p. 223-238.
Astronomy and Astrophysics
Astrophysics
3
Galactic Structure, H Ii Regions, Milky Way Galaxy, Absorption Spectra, Astronomical Models, High Temperature Gases, Ionized Gases, Star Formation
Scientific paper
The available data speak in favor of space and time inhomogeneity of gaseous corona of our Galaxy. The observed C IV and Si IV ions are formed mainly by fast photons and localized in H II-clouds of the galactic halo. On the other hand, the NV ions are thermally ionized and localized in the gas corresponding to a transformation of hot intercloud coronal gas in the H II-clouds. The H II-clouds exhibit downward the gas flow. The galactic fountain can eject the interstellar matter up to height of 1 kpc. Such ejections may be also displayed in C IV, Si IV, and partially NV, and partially NV absorptions. But large gaseous corona extending up to 3-5 kpc proves to be mass-unbalanced. It is possible that the existence of corona is evidence for violent star formation in the galactic disk in the recent past.
Kovalenko Ilya G.
Shchekinov Iu. A.
Suchkov Al. A.
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