Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...360..465b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 360, Sept. 10, 1990, p. 465-470.
Astronomy and Astrophysics
Astrophysics
15
Galactic Nuclei, Galactic Structure, Seyfert Galaxies, Calcium, Interstellar Gas, Line Spectra, Red Shift, Sodium, Stellar Motions
Scientific paper
The findings of spectroscopic observations of several off-nuclear regions in NGC 1275 are studied with a view to their implications for hypotheses as to high-velocity emissions. The observations indicate that the high velocity gas does not exhibit a smooth gradient, but instead appears disrupted. Absorption is found from the high velocity system in the Na I D lines, and the stellar absorption noted from the high-velocity system in the Ca II 8498 A line is consistent with both an early-type stellar population and the difficulty of subtracting bright night sky emission lines in the Ca II triplet region. Either the emission line velocities do not represent motion governed by the internal dynamics of the galaxy, or the galaxy is of very eccentric H I content, size, and structure.
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