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

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Table 1

Blazar sample.

Source	Coordinates ⁽¹⁾	Optical	SED	Redshift	TeV Source ⁽⁴⁾	References
	RA Dec	Class ⁽²⁾	Class ⁽³⁾
	[h:m:s] [d:m:s]

PKS 0537-441	05:38:50.35 − 44:05:09.05	BL Lac	LSP	0.896		(a)
PKS 0735+17	07:38:07.39 +17:42:18.00	BL Lac	LSP	0.424
OJ 287	08:54.48.87 + 20.06:30.64	BL Lac	LSP	0.3060		(b)
PKS 1510-089	05:12:50.53 − 09 :05:59.83	FSRQ	LSP	0.3599	Y	(c)
PKS 2005-489	20:09:25.39 − 4 8:49:53.72	BL Lac	HSP	0.071	Y
PKS 2155-304	21:58:52.07 − 30:13:32.12	BL Lac	HSP	0.117	Y	(d)
W Comae	12:21:31.69 + 28:13.58.50	BL Lac	ISP	0.1029	Y	(e)

Notes.².

⁽¹⁾

ICRS coordinates (J2000) and redshifts from SIMBAD¹;

⁽²⁾

Class from Massaro et al. (2012);

⁽³⁾

Classification of the spectral energy distribution: LSP means low synchrotron peaked (ν_S < 10¹⁴ Hz, where ν_S is the synchrotron peak frequency), ISP intermediate synchrotron peaked (10¹⁴ Hz < ν_S < 10¹⁵ Hz), and HSP high synchrotron peaked (ν_S > 10¹⁵ Hz) blazars; from Abdo et al. (2010);

⁽⁴⁾

TeV Sources from TeVCat

Reference. (a) Zhang et al. (2013); Impiombato et al. (2011); D’Ammando et al. (2010a, 2011a, 2013); Pucella et al. (2010); Impiombato et al. (2008); Pian et al. (2007); Dolcini et al. (2005). (b) D’Ammando et al. (in prep.). (c) D’Ammando et al. (2011a,b,c, 2010a,b,c). (d) Covino et al. (2010); Impiombato et al. (2008); Foschini et al. (2008); Dolcini et al. (2007). (e) D’Ammando et al. (2011a,b, 2010a).

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