A large sample of Kohonen-selected SDSS quasars with weak emission lines: selection effects and statistical properties

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Table 4

Radio properties of the WLQs and of the comparison samples.

Sample	#	f_rl	f_r		r _N,cl	r _R,cl

WLQ-EWS^a	46	0.35	0.42	1.70	8.0	0.04
rWLQ-EWS^a	33	0.37	0.47	1.67	6.0	0.04
WLQ^a	365	0.26	0.34	1.65	9.5	0.30
rWLQ^a	261	0.22	0.33	1.58	6.9	0.22
Comparison^a	2750	0.06	0.06	2.23	2.7	0.60
WLQ Paper I^b	161	0.25	0.34	1.52	54/0	–
WLQ Lit^c	98	0.10	0.28	1.46	26.0	0.36
WLQ Lit (z< 3)^d	25	0.24	0.36	–	9/0	–
Shen EW< 15^e	1268	0.22	0.24	1.93	10.9	0.25

Notes. #: number of quasars; f_rl: proportion of radio-loud quasars; f_r: proportion of radio-detected quasars in FIRST footprint; R: radio-loudness; r_N,cl: number ratio of core-dominated to lobe-dominated sources; r_R,cl: ratio of mean radio-loudness of core-dominated to lobe-dominated sources. ; ; ; ; .

^(a)

As in Table 2

^(b)

WLQs from Paper I with identification in Shen catalogue

^(c)

WLQs from literature (see text)

^(d)

WLQs from literature with z< 3

^(e)

EW selected sample from the Shen catalogue in FIRST footprint with 0 <W_{Mg ii}< 15 Å and bal_flag = 0

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