Modeling vertical structure in circular velocity of spiral galaxy NGC 4244
Joanna Ja{\l}ocha, {\L}ukasz Bratek, Szymon Sikora, Marek Kutschera
TL;DR
This paper models the vertical velocity gradient in galaxy NGC 4244 using a thin disk approximation, finding results consistent with observations and suggesting a flattened mass distribution.
Contribution
It introduces a thin disk model to analyze the vertical velocity gradient, aligning theoretical predictions with observed data for NGC 4244.
Findings
Model predictions match observed velocity gradients.
Supports the hypothesis of a flattened mass distribution.
Validates the thin disk approximation for this galaxy.
Abstract
We study the vertical gradient in azimuthal velocity of spiral galaxy NGC 4244 in a thin disk model. With surface density accounting for the rotation curve, we model the gradient properties in the approximation of quasi-circular orbits and find the predictions to be consistent with the gradient properties inferred from measurements. This consistency may suggest that the mass distribution in this galaxy is flattened.
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