Rotational interpretation of recombination line widths in the galactic nucleus

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Galactic Nuclei, Galactic Rotation, Milky Way Galaxy, Radiative Recombination, Radio Spectra, Spectral Line Width, Andromeda Galaxy, H Lines, Radio Galaxies

Scientific paper

The widths of the radio recombination lines observed in the direction of the galactic center are interpreted as due to pure rotation. This interpretation leads to a mass estimate for the inner 1.6-pc region of our Galaxy. It is noted that recent observations of M 31 suggest the existence of a distinct dynamic entity at its center - the nucleus. The rotational interpretation of the recombination line widths is shown to be consistent with the existence of a nucleus at the center of our own Galaxy which is similar in nature to the nucleus of M 31.

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