Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982afz....18..201d&link_type=abstract
(Astrofizika, vol. 18, Apr.-June 1982, p. 201-214.) Astrophysics, vol. 18, no. 2, Oct. 1982, p. 122-130. Translation.
Astronomy and Astrophysics
Astrophysics
5
Astronomical Spectroscopy, Electron Density (Concentration), Electron Energy, Galactic Clusters, Galaxies, Hot Stars, Hydrogen Ions, Interacting Galaxies, Interstellar Gas, Mass To Light Ratios, Emission Spectra, Galactic Radiation, H Alpha Line, Ionized Gases, Photons, Seyfert Galaxies, Spiral Galaxies
Scientific paper
Determinations of the electron temperatures, the electron densities of the gas, the mass of ionized hydrogen, the number of photons ionizing the gas, and the corresponding numbers of hot stars for 16 interacting galaxies, nine isolated pairs of galaxies, and 11 isolated galaxies are given. The electron temperature of the interacting and isolated galaxies varies from about 5000 to 7000 degrees. For the majority of both types of systems, the electron density is about 100-1000 per cubic cm; for the remaining seven, it is one or less than one. The system types do not differ as regards the amount of ionized hydrogen, and in the ratio of this amount to the luminosity of the galaxy. On the basis of the ratio of the number of L(C) photons to the luminosity, it is argued that the interacting galaxies have either a higher percentage of hot stars or a higher percentage of massive stars among the hot stars as compared to isolated systems.
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