76 citations · 248 across the 8 of their papers we have counts for
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astro-ph1997★ 6 cited
The maximum rotation of a galactic disc
Roelof Bottema
The observed stellar velocity dispersions of galactic discs show that the maximum rotation of a disc is on average 63% of the observed maximum rotation. This criterion can, however…
astro-ph1997★ 40 cited
An investigation of the structure and kinematics of the spiral galaxy NGC 6503
Roelof Bottema, Jeroen P. E. Gerritsen
The spiral galaxy NGC 6503 exhibits a regular kinematical structure except for a remarkable drop of the stellar velocity dispersion values in the central region. To investigate the…