Physical properties of galaxies and their evolution in the VIMOS VLT Deep Survey - I. The evolution of the mass-metallicity relation up to z ~ 0.9

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Volume 495 / No 1 (February III 2009)

A&A, 495 1 (2009) 53-72

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Table 6:

Evolution of the luminosity-metallicity relation for the wide and deep samples. The reference relation is the one obtained by Lamareille et al. (2004) with 2dFGRS data and renormalized to the CL01 method. In each redshift range, we give the results of the ols bisector fit (slope and zero-point) and of the constant-slope fit (mean shift, see Fig. 12), together with the mean redshift and magnitude, and the dispersion of the relation. The metallicity shift is given in three cases: a) using only star-forming galaxies; b) adding candidate star-forming galaxies; and c) also adding candidate AGNs.
Sample	Slope	Zero-point	z	$M_{{\rm AB}}(B)$	$\Delta\log({\rm O/H})^{L}$			rms
					a	b	c
reference	-0.31	2.83
wide
0.0<z<0.5	$-0.67\pm0.17$	$-4.60\pm3.4$	0.31	-19.99	$\mathit{-0.08}$	-0.10	$\mathit{-0.10}$	0.23
0.5<z<0.7	$-0.75\pm0.08$	$-6.67\pm1.6$	0.59	-20.53	$\mathit{-0.39}$	-0.44	$\mathit{-0.45}$	0.23
0.7<z<0.9	$-0.64\pm0.21$	$-5.01\pm4.4$	0.77	-21.22	$\mathit{-0.58}$	-0.65	$\mathit{-0.70}$	0.24
deep
0.0<z<0.5	$-0.90\pm0.45$	$-8.28\pm8.61$	0.30	-18.99	$\mathit{0.17}$	0.15	$\mathit{0.15}$	0.28
0.5<z<0.7	$-0.41\pm0.06$	$0.50\pm1.29$	0.59	-19.67	$\mathit{-0.20}$	-0.24	$\mathit{-0.25}$	0.27
0.7<z<0.9	$-0.87\pm0.41$	$-8.89\pm8.20$	0.76	-20.05	$\mathit{-0.24}$	-0.32	$\mathit{-0.39}$	0.29

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