Long and short term variability of seven blazars in six near-infrared/optical bands

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Table 6

NIR-optical fractional variability amplitude σ_rms of the blazar sample (×100%).

Source	Class	K	H	J	I	R	V

PKS 0537-441	BL Lac	54 ± 2	57 ± 2	57 ± 2	55 ± 2	52 ± 2	47 ± 2
PKS 0735+17	BL Lac	25 ± 2	30 ± 2	29 ± 2	23 ± 1	25 ± 1	31 ± 2
OJ 287	BL Lac	39 ± 3	38 ± 2	37 ± 2	37 ± 2	39 ± 2	36 ± 2
PKS 1510-089^a	FSRQ	92 ± 4	104 ± 4	115 ± 5	43 ± 2	69 ± 4	52 ± 4
PKS 1510-089^b		61 ± 3	69 ± 3	68 ± 3	44 ± 2	45 ± 2	47 ± 4
PKS 2005-489	BL Lac	32 ± 2	29 ± 2	29 ± 1	31 ± 1	33 ± 1	38 ± 2
PKS 2155-30	BL Lac	57 ± 3	54 ± 2	54 ± 2	48 ± 2	49 ± 2	49 ± 2
W Comae	BL Lac	26 ± 2	31 ± 2	33 ± 2	25 ± 2	28 ± 2	34 ± 3

Notes.

^(a)

All data;

^(b)

because of inhomogenous sampling, the flare occurring on 54 956−54 969 MJD was removed.

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