The VIMOS-VLT deep survey: the group catalogue | Astronomy & Astrophysics (A&A)

Home

All issues

Volume 520 (September-October 2010)

A&A, 520 (2010) A42

Full HTML

Free Access

Table 2:

Quality statistics (C₁, C₂, P₁, P₂, $S_{\rm gal}$ , and $f_{\rm I}$ , see text for details) of the group catalogue reconstructed by the algorithm with the *high-purity* parameter set, for two different redshift bins and the whole redshift range, considering groups with $N\geq 2$ .
Quality statistics for $N\geq 2$
Quality parameter	$0.2\leq z \leq 0.6$	$0.6\leq z \leq 1.0$	$0.2\leq z \leq 1.0$
C₁	$0.29 \pm 0.03$	$0.20 \pm 0.03$	$0.24 \pm 0.02$
C₂	$0.24 \pm 0.03$	$0.17 \pm 0.02$	$0.20 \pm 0.02$
P₁	$0.75 \pm 0.04$	$0.73 \pm 0.06$	$0.74 \pm 0.04$
P₂	$0.66 \pm 0.07$	$0.69 \pm 0.06$	$0.67 \pm 0.05$
$S_{\rm gal}$	$0.32 \pm 0.03$	$0.21 \pm 0.04$	$0.28 \pm 0.03$
$f_{\rm I}$	$0.24 \pm 0.04$	$0.27 \pm 0.05$	$0.25 \pm 0.03$

Notes. Each parameter is computed as the mean over the 20 VVDS-like mocks, and the associated error is its rms. The same parameters for groups with $N\geq 3$ are consistent, within error bars, with those presented here.

Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.