**Table 10:** Nature of the galaxies associated with the DLA systems studied.
DLA system	Model	Star formation characteristics	$z_{\rm f}$	Age
		$\nu$ [Gyr^-1]/ $\Delta t$ [Gyr]/ $t_{\rm b}$ [Gyr]		[Gyr]
Q0100+13, $z_{\rm abs} = 2.309$	Spiral	solar neighborhood: R=8 kpc	$\sim$ 2.5	$0.25\pm 0.20$
	Dwarf irregular	bursting SF: 0.9/0.07/2.0	(2.35-2.47)	0.05-0.20
Q1331+17, $z_{\rm abs} = 1.776$	Spiral	outer disk: R=16 kpc	$\sim$ 2.8	$1.5\pm 0.4$
	Dwarf irregular	continuous SF: 0.03/13/...	$\sim$ 10	$\gtrsim$ 3.5
Q2231-00, $z_{\rm abs} = 2.066$	Dwarf irregular	bursting SF: 4.2/0.10/0.5	(2.10-2.16)	0.05-0.15

$\textstyle \parbox{14cm}{ $z_{\rm f}$\space in brackets = Values obtained under the assumption that the galaxy has undergone a single burst of SF.}$