The Faber-Jackson relation for early-type galaxies: dependence on the magnitude range

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Volume 516 (June-July 2010)

A&A, 516 (2010) A96

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Table 2:

Coefficients of the FJR for the SDSS sample of galaxies in increasing-magnitude-intervals (lower magnitude cut-off).
MI^a	N^b	B^c	A^d	$\sigma_{\rm FJR}$ ^e
Total SDSS sample (g filter)
$-23.5 \geq M > -24.5$	325	1.082 $\pm$ 0.314	-23.132 $\pm$ 7.439	0.154
$-22.5 \geq M > -24.5$	11 071	0.441 $\pm$ 0.014	-7.647 $\pm$ 0.311	0.267
$-21.5 \geq M > -24.5$	48 432	0.242 $\pm$ 0.011	-2.999 $\pm$ 0.246	0.406
$-20.5 \geq M > -24.5$	77 887	0.173 $\pm$ 0.009	-1.449 $\pm$ 0.208	0.532
$-19.5 \geq M > -24.5$	87 949	0.152 $\pm$ 0.009	-0.976 $\pm$ 0.193	0.599
$-18.5 \geq M > -24.5$	89 197	0.148 $\pm$ 0.009	-0.884 $\pm$ 0.195	0.615
$-17.5 \geq M > -24.5$	89 308	0.147 $\pm$ 0.009	-0.867 $\pm$ 0.198	0.617
Total SDSS sample (r filter)
$-24.0 \geq M > -25.0$	1081	0.525 $\pm$ 0.033	-10.232 $\pm$ 0.796	0.168
$-23.0 \geq M > -25.0$	17 978	0.297 $\pm$ 0.015	-4.548 $\pm$ 0.2362	0.295
$-22.0 \geq M > -22.0$	56 336	0.196 $\pm$ 0.011	-2.113 $\pm$ 0.248	0.431
$-21.0 \geq M > -25.0$	81 344	0.157 $\pm$ 0.009	-1.208 $\pm$ 0.205	0.538
$-20.0 \geq M > -25.0$	88 427	0.145 $\pm$ 0.008	-0.938 $\pm$ 0.192	0.585
$-19.0 \geq M > -25.0$	89 245	0.143 $\pm$ 0.008	-0.876 $\pm$ 0.195	0.596
$-18.0 \geq M > -25.0$	89 305	0.142 $\pm$ 0.008	-0.868 $\pm$ 0.197	0.598
Homogeneous SDSS sample (g filter)
$-22.5 \geq M > -23.0$	14	1.038 $\pm$ 0.206	-20.988 $\pm$ 4.675	0.056
$-21.5 \geq M > -23.0$	1823	0.505 $\pm$ 0.022	-8.666 $\pm$ 0.487	0.218
$-20.5 \geq M > -23.0$	9386	0.287 $\pm$ 0.019	-3.796 $\pm$ 0.397	0.371
$-19.5 \geq M > -23.0$	16 162	0.211 $\pm$ 0.016	-2.138 $\pm$ 0.339	0.498
$-18.5 \geq M > -23.0$	16 901	0.196 $\pm$ 0.017	-1.849 $\pm$ 0.349	0.531
Homogeneous SDSS sample (r filter)
$-23.0 \geq M > -23.5$	82	0.629 $\pm$ 0.071	-12.142 $\pm$ 1.647	0.109
$-22.0 \geq M > -23.5$	3005	0.376 $\pm$ 0.026	-6.084 $\pm$ 0.571	0.255
$-21.0 \geq M > -23.5$	11 293	0.242 $\pm$ 0.019	-2.989 $\pm$ 0.404	0.398
$-20.0 \geq M > -23.5$	16 514	0.197 $\pm$ 0.016	-2.003 $\pm$ 0.346	0.498
$-19.0 \geq M > -23.5$	16 910	0.189 $\pm$ 0.016	-1.829 $\pm$ 0.354	0.519

Notes. ^(a) Absolute magnitude interval within which the galaxies are distributed. ^(b) Number of galaxies in the magnitude interval. ^(c) Slope of the FJR. ^(d) Zero point of the FJR. ^(e) Total intrinsic dispersion of the FJR.

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