Formation of filaments and feathers in disc galaxies: Is self-gravity enough?

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Table 2.

Fit parameters for the evolution of the variance in the logarithmic surface density σ_η (Equation (8)).

Model name	A	ωt_rot	t_onset/t_rot
Q1_ℳ21	0.032 ± 0.001	2.41 ± 0.05	0.60 ± 0.01
Q1_ℳ29	0.047 ± 0.001	2.62 ± 0.08	0.47 ± 0.01
Q1_ℳ36	0.062 ± 0.002	3.06 ± 0.08	0.38 ± 0.01

Notes. The fit is performed using a functional form given by Equation 9. We show the best fits as dashed lines in the right-hand panel of Figure 5.

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