The origin of abundance gradients in the Milky Way: the predictions of different models

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Table 1:

Models parameters.
Model	Threshold	$\nu$ (4-6-8-10-12-14 kpc)	$\tau$	$\Sigma_{\rm halo}$	Infall law	SFR
C08	yes	const	/	/	cosmological	Eq. (1)
C97	yes	const	1.03 $\cdot$ R - 1.27	const	two-infall law	Eq. (1)
1	no	const	/	/	cosmological	Eq. (1)
2	no	8.0-4.0-1.0-0.5-0.2-0.05	/	/	cosmological	Eq. (1)
3	no	4.0-1.0-0.1	/	/	cosmological with inside-out	Eq. (1)
4	no	const	const	const	two-infall law	Eq. (1)
5	no	const	1.03 $\cdot$ R-1.27	const	two-infall law	Eq. (1)
6	no	9.0-3.0-1.0-0.3-0.1-0.03	$1.03 \cdot R$ -1.27	$\propto$ 1/R	two-infall law	Eq. (1)
7	no	$0.1 \cdot 8/R$	const	/	one-infall law	Eq. (2)

The second column indicates the presence or absence of a threshold, the third column the type of SF efficiency, the fourth whether the galaxy forms inside-out and the fifth whether the halo density is a constant or a function of radius. In the sixth column, we show the type of infall law used, and in the seventh column the SFR. The values of $\nu$ for Model 3 are for 2.5, 7.5, and 12.5 kpc.

Source LaTeX | All tables | In the text

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