Chemical abundances along the quasar main sequence

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Table 7.

Diagnostic intensity ratios.

Object	Component	$\frac{CIV}{{HeII}_{UV}}$ $\frac{\mathrm{CIV}}{\mathrm{HeII}_{\mathrm{UV}}}$	$\frac{CIV}{H β}$ $\frac{\mathrm{CIV}}{\mathrm{H}\beta}$	$\frac{SiIV + OIV]}{CIV}$ $\frac{\mathrm{SiIV+OIV]}}{\mathrm{CIV}}$	$\frac{SiIV + OIV]}{{HeII}_{UV}}$ $\frac{\mathrm{SiIV+OIV]}}{\mathrm{HeII}_{\mathrm{UV}}}$	$\frac{AlIII}{CIV}$ $\frac{\mathrm{AlIII}}{\mathrm{CIV}}$	$\frac{AlIII}{SiIII]}$ $\frac{\mathrm{AlIII}}{\mathrm{SiIII]}}$	$\frac{SiIII]}{CIII]}$ $\frac{\mathrm{SiIII]}}{\mathrm{CIII]}}$	$\frac{FeII}{H β}$ $\frac{\mathrm{FeII}}{\mathrm{H}\beta}$	$\frac{{HeII}_{opt}}{H β}$ $\frac{\mathrm{HeII}_{\mathrm{opt}}}{\mathrm{H}\beta}$	$\frac{CIII]}{CIV}$ $\frac{\mathrm{CIII]}}{\mathrm{CIV}}$
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)
Mrk 335	BC	8.69 ± 1.60	–	0.16 ± 0.02	1.40 ± 0.29	0.011 ± 0.012	0.23 ± 0.26	0.26 ± 0.11	0.21 ± 0.04	0.30 ± 0.08	0.18 ± 0.03
Mrk 110	BC	13.39 ± 3.37	–	0.13 ± 0.02	1.71 ± 0.48	–	–	–	0.20 ± 0.04	0.16 ± 0.03	–
Mrk 509	BC	10.16 ± 2.93	–	0.17 ± 0.03	1.70 ± 0.54	0.040 ± 0.019	0.48 ± 0.27	0.45 ± 0.16	0.021 ± 0.015	0.24 ± 0.06	0.18 ± 0.04
Ark 564	BC	2.91 ± 0.74	11.19 ± 2.45	0.28 ± 0.07	0.82 ± 0.25	0.036 ± 0.019	0.40 ± 0.23	0.16 ± 0.05	0.67 ± 0.22	0.28 ± 0.11	0.57 ± 0.10
Mrk 478	BC	8.04 ± 2.94	5.21 ± 0.75	0.66 ± 0.17	5.31 ± 2.18	0.12 ± 0.03	0.46 ± 0.14	0.73 ± 0.17	1.08 ± 0.11	0.03 ± 0.01	0.36 ± 0.07
Ton 28	BC	6.08 ± 10.72	–	0.90 ± 0.72	5.47 ± 10.15	0.61 ± 0.44	1.59 ± 1.69	1.66 ± 2.22	1.04 ± 0.18	–	0.23 ± 0.25
LB 2522	BC	$2 . 75_{- 2.75}^{+ 8.79}$ $2.75^{+8.79}_{-2.75}$	–	$1 . 78_{- 1.78}^{+ 2.40}$ $1.78^{+2.40}_{-1.78}$	$4 . 91_{- 4.91}^{+ 15.08}$ $4.91^{+15.08}_{-4.91}$	$0 . 69_{- 0.69}^{+ 1.27}$ $0.69^{+1.27}_{-0.69}$	$4 . 59_{- 4.59}^{+ 32.04}$ $4.59^{+32.04}_{-4.59}$	≤1.21	1.30 ± 0.32	–	$0 . 98_{- 0.98}^{+ 1.53}$ $0.98^{+1.53}_{-0.98}$
LEDA 51016	BC	10.50 ± 6.37	–	0.68 ± 0.13	7.17 ± 4.30	0.069 ± 0.034	0.33 ± 0.18	1.00 ± 0.35	1.15 ± 0.19	–	0.21 ± 0.06
I Zw 1	BC	4.73 ± 1.63	–	0.71 ± 0.13	3.36 ± 1.12	0.23 ± 0.06	0.57 ± 0.16	1.66 ± 0.46	2.01 ± 0.32	–	0.24 ± 0.06
PHL 1092	BC	$9 . 27_{- 9.27}^{+ 36.94}$ $9.27^{+36.94}_{-9.27}$	–	1.40 ± 1.02	$12 . 97_{- 12.97}^{+ 51.60}$ $12.97^{+51.60}_{-12.97}$	1.84 ± 1.27	0.99 ± 0.60	$7 . 84_{- 7.84}^{+ 24.72}$ $7.84^{+24.72}_{-7.84}$	2.07 ± 0.49	–	$0 . 24_{- 0.24}^{+ 0.75}$ $0.24^{+0.75}_{-0.24}$
	BLUE	8.26 ± 5.56	–	1.04 ± 0.27	8.55 ± 5.84	0.15 ± 0.07	0.96 ± 0.56	1.24 ± 0.76	≤1.28	–	0.13 ± 0.06
Fairall 9	BC	13.69 ± 4.80	12.60 ± 1.71	0.15 ± 0.02	2.11 ± 0.75	0.058 ± 0.019	0.31 ± 0.11	1.49 ± 0.38	0.98 ± 0.17	–	0.12 ± 0.03
	VBC	13.92 ± 9.73	7.41 ± 1.79	0.17 ± 0.03	3.06 ± 2.15	≤0.02	–	–	≤0.15	–	0.11 ± 0.03
Ark 120	BC	16.66 ± 5.41	–	0.35 ± 0.07	5.87 ± 2.13	0.046 ± 0.020	0.29 ± 0.14	0.87 ± 0.23	0.84 ± 0.08	–	0.18 ± 0.03
	VBC	2.50 ± 0.77	–	0.50 ± 0.20	1.25 ± 0.58	≤0.05	–	–	≤0.17	0.16 ± 0.04	0.30 ± 0.10
NGC 3783	BC	10.99 ± 2.51	7.64 ± 0.68	0.12 ± 0.02	1.28 ± 0.34	0.057 ± 0.017	0.75 ± 0.30	0.57 ± 0.18	0.29 ± 0.05	–	0.13 ± 0.02
	VBC	2.80 ± 0.83	11.74 ± 3.02	0.062 ± 0.017	0.25 ± 0.09	≤0.03	–	–	≤0.67	0.44 ± 0.14	0.12 ± 0.04

Notes. (1) Object’s common name. (2) Component considered for the estimation of metallicity. (3)–(12) Diagnostic ratios used for the estimation of metallicity, with the associated error. –: not used or not available. Upper limits for some diagnostic ratios described in Section 3.7 are shown.

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