May 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ngbh.procr....r&link_type=abstract
International School of Cosmology and Gravitation, Course on the Nuclei of Galaxies, Black Holes, and Collapsed Matter, 3rd, Eri
Physics
Andromeda Galaxy, Galactic Nuclei, Hubble Diagram, Milky Way Galaxy, Seyfert Galaxies, Big Bang Cosmology, Galactic Structure, H Ii Regions, Isotropy, Peculiar Galaxies, Relativity
Scientific paper
The lectures cover selected topics concerning galactic nuclei, with the emphasis on observations. Descriptions are given of the nuclei of various objects, including: (1) our Galaxy; (2) the Andromeda galaxy, M31, a nearby spiral galaxy; (3) NGC3351, a barrel spiral with a ring of nuclear H II regions; (4) NGC4151, a Seyfert galaxy; (5) NGC1275, a peculiar Seyfert galaxy; and (6) BL Lac, a QSO. The features identified near the center of our Galaxy include an IR disk; molecular clouds of OH, H2CO, and CO; nuclear H II regions; a 700-pc H I disk; and high-energy X-ray and gamma-ray emissions from the galactic center. Alternative models for the gas motions near the nucleus are considered. A report is presented on the current status of research into the question whether the Hubble expansion is isotropic at distances of 100-150 Mpc defined by ScI galaxies with magnitudes from 14.0 to 15.0.
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