AGN-host connection at 0.5 < z < 2.5: A rapid evolution of AGN fraction in red galaxies during the last 10 Gyr

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Volume 601 (May 2017)

A&A, 601 (2017) A63

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Table 1

0.5−8 keV luminosities, Eddington ratios, and host masses of AGNs in our sample.

Host galaxy	Number	Number of	Number	Number of	AGN fraction	Median	Median	Median
color	of AGNs	FIR-AGNs^a	of galaxies	FIR-galaxies		log L_X	log M_∗	log λ_Edd
					(%)	(erg s^-1)	(M_⊙)

0.5 < z < 1.5
Red	23	2	473	14	5.1(4.9)^b	42.28	10.62	–2.09
Green	64	27	500	182	13.2(12.8)	42.67	10.60	–1.89
Blue	28	20	325	182	9.5(8.6)	42.53	10.37	–1.57
All	115	49	1298	378	9.3(8.5)	42.54	10.51	–1.96

1.5 ≤ z < 2.5
Red	27	1	226	6	22.5(11.9)	42.86	10.67	–1.90
Green	31	8	149	21	34.5(20.8)	42.99	10.49	–1.48
Blue	47	24	481	101	16.4(9.8)	42.90	10.37	–1.41
All	106	33	856	128	21.2(12.4)	42.90	10.44	–1.59

Notes.

^(a)

The number of sources detected with S/N> 5 at Herschel/PACS 100 μm.

^(b)

The number quoted in parenthesis denotes the AGN fraction calculated without taking into account the varying depth of X-ray observations.

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