The mean star formation rate of X-ray selected active galaxies and its evolution from z ~ 2.5: results from PEP-Herschel

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Volume 545 (September 2012)

A&A, 545 (2012) A45

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Table 2

Functional fits to the trends between L₆₀ and L_AGN in bins of redshift.

Slope of regression line α left free

Redshift bins	¹	α²	³		(single line fit)⁴

Local	43.56 ± 0.12	0.75 ± 0.22	44.23 ± 0.13	1.53	N/A
0.5–0.8	44.18 ± 0.08	0.84 ± 0.30	44.94 ± 0.33	0.41	N/A
0.8–1.5	44.60 ± 0.09	0.58 ± 0.18	45.99 ± 0.64	7.58	7.65
1.5–2.5	45.08 ± 0.08	0.53 ± 0.25	46.46 ± 0.82	7.57	6.97

Slope of regression line α fixed at 0.78

Redshift bins		α

Local	43.57 ± 0.08	0.78	44.27 ± 0.11	1.14	–
0.2–0.5	43.94 ± 0.09	0.78	44.82 ± 0.41	6.47	–
0.5–0.8	44.17 ± 0.07	0.78	44.89 ± 0.22	2.42	–
0.8–1.5	44.62 ± 0.04	0.78	45.98 ± 0.17	5.61	–
1.5–2.5	45.12 ± 0.06	0.78	46.51 ± 0.21	5.39	–

Notes. See Sect. 4.1.1.

⁽¹⁾

Mean L₆₀ of low-luminosity AGNs.

⁽²⁾

Slope of Regression line valid for luminous AGNs.

⁽³⁾

Transition AGN luminosity: L₆₀ is significantly correlated with L_AGN at z < 1 beyond this AGN luminosity.

⁽⁴⁾

A single straight line fit between log L_AGN and log L₆₀with a variable slope and normalisation.

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