Emission-line and continuum reverberation mapping of the NLS1 galaxy WPVS 48

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Table 5.

Interband cross-correlation lags τ with respect to the continuum at 4265 Å (at 4425 Å in observed frame) as well as the maximum correlation coefficient r_max and the fractional contribution α of the secondary component, respectively, for the univariate and bivariate model.

	Univariate model			Bivariate model

Cont.	r_max	τ_cent	τ_peak	τ_sec	α
		[d]	[d]	[d]
(1)	(2)	(3)	(4)	(5)	(6)
Cont. 4265 (ACF)	1.00	$0 . 0_{- 1.9}^{+ 1.9}$ $0.0_{-1.9}^{+1.9}$	$0_{- 1}^{+ 1}$ $0_{-1}^{+1}$	–	–
Cont. 4440	0.99	$0 . 0_{- 1.4}^{+ 2.4}$ $0.0_{-1.4}^{+2.4}$	$0_{- 1}^{+ 1}$ $0_{-1}^{+1}$	–	–
Cont. 4775	0.96	$- 0 . 4_{- 2.1}^{+ 2.4}$ $-0.4_{-2.1}^{+2.4}$	$- 1_{- 1}^{+ 2}$ $-1_{-1}^{+2}$	–	–
Cont. 5100	0.90	$- 0 . 4_{- 2.0}^{+ 3.3}$ $-0.4_{-2.0}^{+3.3}$	$1_{- 3}^{+ 2}$ $1_{-3}^{+2}$	$11 . 5_{- 6.0}^{+ 4.5}$ $11.5_{-6.0}^{+4.5}$	$0 . 22_{- 0.08}^{+ 0.09}$ $0.22_{-0.08}^{+0.09}$
V band (5300 Å)^*	0.91	$5 . 4_{- 1.9}^{+ 1.6}$ $5.4_{-1.9}^{+1.6}$	$5_{- 2}^{+ 2}$ $5_{-2}^{+2}$	–	–
Cont. 5775	0.91	$4 . 9_{- 2.4}^{+ 2.6}$ $4.9_{-2.4}^{+2.6}$	$3_{- 1}^{+ 3}$ $3_{-1}^{+3}$	$14 . 8_{- 2.3}^{+ 2.8}$ $14.8_{-2.3}^{+2.8}$	$0 . 39_{- 0.05}^{+ 0.04}$ $0.39_{-0.05}^{+0.04}$
Cont. 6030	0.88	$5 . 4_{- 2.4}^{+ 2.7}$ $5.4_{-2.4}^{+2.7}$	$3_{0}^{+ 4}$ $3_{0}^{+4}$	$16 . 0_{- 2.5}^{+ 2.1}$ $16.0_{-2.5}^{+2.1}$	$0 . 40_{- 0.05}^{+ 0.04}$ $0.40_{-0.05}^{+0.04}$
Cont. 6250	0.87	$6 . 4_{- 2.0}^{+ 3.0}$ $6.4_{-2.0}^{+3.0}$	$4_{- 1}^{+ 5}$ $4_{-1}^{+5}$	$15 . 5_{- 2.9}^{+ 2.6}$ $15.5_{-2.9}^{+2.6}$	$0 . 44_{- 0.05}^{+ 0.05}$ $0.44_{-0.05}^{+0.05}$
R band (6750 Å)^*	0.88	$8 . 5_{- 4.2}^{+ 1.6}$ $8.5_{-4.2}^{+1.6}$	$6_{- 3}^{+ 5}$ $6_{-3}^{+5}$	–	–
Cont. 6810	0.85	$7 . 0_{- 3.1}^{+ 4.5}$ $7.0_{-3.1}^{+4.5}$	$4_{- 2}^{+ 8}$ $4_{-2}^{+8}$	$14 . 0_{- 2.1}^{+ 3.6}$ $14.0_{-2.1}^{+3.6}$	$0 . 49_{- 0.05}^{+ 0.05}$ $0.49_{-0.05}^{+0.05}$
Cont. 7030	0.84	$6 . 5_{- 1.5}^{+ 6.5}$ $6.5_{-1.5}^{+6.5}$	$4_{0}^{+ 10}$ $4_{0}^{+10}$	$14 . 0_{- 2.5}^{+ 4.0}$ $14.0_{-2.5}^{+4.0}$	$0 . 53_{- 0.06}^{+ 0.08}$ $0.53_{-0.06}^{+0.08}$
Cont. 7110	0.83	$8 . 0_{- 4.2}^{+ 3.0}$ $8.0_{-4.2}^{+3.0}$	$4_{- 2}^{+ 8}$ $4_{-2}^{+8}$	$13 . 0_{- 1.6}^{+ 3.6}$ $13.0_{-1.6}^{+3.6}$	$0 . 51_{- 0.06}^{+ 0.06}$ $0.51_{-0.06}^{+0.06}$

Notes. The photometric light curves marked with ^* were published by Sobrino Figaredo et al. (2018). We note that Hβ contributes to the flux in the V band. The lag τ_sec and fractional contribution α of the secondary component have not been included for Cont. 4440 and Cont. 4775 due to its strong dependence on the chosen bin size of the correlation function.

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