Nuclear Rotation Curves of Galaxies in the CO Line Emission

Details Nuclear Rotation Curves of Galaxies in the CO Line Emission Nuclear Rotation Curves of Galaxies in the CO Line Emission

1997-09-12

arxiv.org/abs/astro-ph/9709115v1

Astronomy and Astrophysics

Astrophysics

To appear in AJ, Plain TeX, Figures on request

Scientific paper

10.1086/118657

We have obtained high-resolution position-velocity (PV) diagrams along the major axes of the central regions of nearby galaxies in the CO-line emission using the Nobeyama 45-m telescope and the Millimeter Array. Nuclear rotation curves for 14 galaxies have been derived based on the PV diagrams using the envelope-tracing method. The nuclear rotation curves for most of the galaxies show a steep rise within a few hundred pc, which indicates a high-density concentration of mass. Keywords: Galaxies: general - Galaxies: structure - ISM: molecular line

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