The ultraviolet/optical variability of steep-spectrum radio quasars: the change in accretion rate?

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Table 1

Source list.

SDSS source	z	λ _u	λ _i	log (M_BH)^a	log (l)	log (M_BH)^b	log (ṁ)	(χ²/ν)^c	(χ²/ν)^d	α	β
		(Å)	(Å)	(M_⊙)		(M_⊙)				(mJy)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)

J000622.60−000424.4	1.0377	1742.65	3671.30	8.92	–1.16	8.85	[–1.68,–1.45]	3.05	2.65	0.323	0.794
J005905.51+000651.6	0.7189	2065.86	4352.20	8.96	–1.15	8.86	[–1.21,–0.97]	8.23	8.06	0.910	1.011
J012401.76+003500.9	1.8516	1245.27^e	2623.44	9.36	–1.36	8.49	[–0.83,–0.51]	4.80	4.37	9.876	1.553
J012517.14−001828.9	2.2780	1083.28	2282.18	8.50	0.52	9.31	[–0.92,–0.76]	2.19	2.11	2.760	1.583
J013514.39−000703.8	0.6712	2124.82	4476.42	8.41	–1.60	8.98	[–2.52,–2.21]	2.03	1.72	6.187	1.709
J015509.00+011522.5	1.5480	1393.64	2936.03	8.64	–0.20	9.21	[–1.14,–0.91]	2.42	2.24	0.629	1.017
J015832.51−004238.2	2.6071	984.45	2073.97	8.29	0.50	8.99	[–1.00,–0.76]	1.00	0.93	0.691	1.061
J021225.56+010056.1	0.5128	2347.30	4945.13^f	8.77	–1.37	8.78	[–1.68,–1.37]	4.00	2.81	1.904	1.412
J021728.62−005227.2	2.4621	1025.68	2160.83	8.84	–0.55	9.09	[–1.29,–1.05]	1.89	1.87	1.376	1.267
J022508.07+001707.2	0.5270	2325.47	4899.15	8.88	–1.80	9.03	[–2.13,–1.97]	6.40	5.95	1.995	1.525
J023313.81−001215.4	0.8072	1964.92	4139.55	8.41	–0.95	8.77	[–1.83,–1.59]	3.05	2.68	4.997	1.573
J024534.07+010813.7	1.5363	1400.07	2949.57	9.65	–1.81	9.68	[–1.83,–1.67]	0.63	0.56	0.189	0.954
J213004.75−010244.4	0.7040	2083.92	4390.26	10.08	–2.35	9.43	[–2.05,–1.89]	2.98	2.91	1.368	1.652
J213513.10−005243.8	1.6548	1337.58^e	2817.91	8.58	–0.09	9.29	[–0.91,–0.75]	4.81	4.51	2.914	1.701
J221409.96+005227.0	0.9078	1861.31	3921.27	9.05	–1.31	8.67	[–1.21,–0.97]	2.97	2.83	2.135	1.305
J231607.25+010012.9	2.6291	978.48	2061.39	9.15	–0.42	9.28	[–0.60,–0.45]	2.22	2.08	2.557	1.549
J233624.04+000246.0	1.0949	1695.07	3571.05	9.16	–1.00	9.03	[–1.21,–0.97]	4.65	2.09	3.099	1.617
J235156.12−010913.3	0.1739	3024.96	6372.77^g	8.90	–1.53	9.03	[–1.84,–1.60]	10.83	10.63	0.784	1.102

Notes.Colunm 1 – SDSS source name; Col. 2 – redshift; Cols. 3–4 – corresponding wavelength of SDSS u and i wavebands in the source rest frame, respectively ^(e,f,g) the prominent broad emission lines Lyα, Hβ, and Hα in the photometric wavebands, respectively); Col. 5 – – – –

^(a)

black hole mass in unit of solar mass estimated from the empirical relation of BLR radius and the BLR line width; Col. 6 – Eddington ratio l = L_BOL/L_EDD with the black hole mass in Col. 5, and the bolometric luminosity estimated from BLR luminosity; Cols. 7–8

^(b)

black hole mass in unit of solar mass, and the range of the accretion rate from the model fit with a standard accretion disk model, respectively; Col. 9

^(c)

reduced χ² of the accretion disk model fit; Col. 10

^(d)

reduced χ² of the power-law fit; Cols. 11–12 – parameters of the power-law fit .

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