Physical characterization of the FeLoBAL outflow in SDSS J0932+0840: Analysis of VLT/UVES observations

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Volume 693 (January 2025)

A&A, 693 (2025) A254

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Table 1.

Absorption lines identified in the VLT spectrum of SDSS J0932+0840 and their measured column densities.

Ion	λ ^(a)	log(f) ^(b)	E_low^(c)	N_ion^(d)
	(Å)		(cm⁻¹)	(log(cm⁻²))
H I	1215.67	−0.38	0	> 14.57_−0.23
He I*	2829.91	−2.22	159856	$14 . 14_{- 0.11}^{+ 0.09}$ $14.14_{-0.11}^{+0.09}$
C II	1334.53	−0.89	0	> 15.20_−0.18
C II*	1335.71	−0.94	63	> 15.24_−0.32
N V	1238.82, 1242.80	−0.80, −1.10	0	> 15.31_−0.33
Mg II	2796.35, 2803.53	−0.22, −0.52	0	> 14.52_−0.29
Al III	1854.72, 1862.79	−0.25, −0.55	0	> 14.70_−0.16
Si II	1808.01	−2.60	0	$16 . 57_{- 0.15}^{+ 0.11}$ $16.57_{-0.15}^{+0.11}$
Si II*	1816.93	−2.71	287	$16 . 55_{- 0.11}^{+ 0.09}$ $16.55_{-0.11}^{+0.09}$
Si IV	1393.75, 1402.77	−0.29, −0.59	0	> 14.84_−0.32
S II	1250.58, 1253.81	−0.22, −1.92	0	> 16.44_−0.31
Cr II	2056.25, 2062.24, 2066.16	−0.99, −1.12, −1.29	0	> 15.08_−0.10
Cr II*	2161.38	−1.84*	42898	$14 . 95_{- 0.11}^{+ 0.09}$ $14.95_{-0.11}^{+0.09}$
Mn II	2576.88	−0.45	0	> 14.04_−0.11
Fe II	1901.78	$- 4 . 10_{- 0.30}^{+ 0.30}$ $-4.10^{+0.30}_{-0.30}$	0 (0)	$16 . 77_{- 0.36}^{+ 0.36}$ $16.77_{-0.36}^{+0.36}$
Fe II*	1267.42, 2253.82	−1.85, −2.47	385 (1)	$15 . 50_{- 0.10}^{+ 0.08}$ $15.50_{-0.10}^{+0.08}$
Fe II*	1271.98, 1272.61	−1.85, −2.36	668 (2)	$15 . 77_{- 0.10}^{+ 0.08}$ $15.77_{-0.10}^{+0.08}$
Fe II*	1275.14, 1275.78	−2.15, −2.00	863 (3)	$15 . 59_{- 0.10}^{+ 0.08}$ $15.59_{-0.10}^{+0.08}$
Fe II*	1277.66	−1.85	977 (4)	$15 . 15_{- 0.10}^{+ 0.08}$ $15.15_{-0.10}^{+0.08}$
Fe II*	1405.60, 1412.83, 1418.85	−2.92, −2.47, −3.04*	1873 (5)	$16 . 06_{- 0.11}^{+ 0.09}$ $16.06_{-0.11}^{+0.09}$
Fe II*	2371.22	−1.84	3117 (8)	> 15.33_−0.11
Fe II*	2749.99	−0.86	8680 (11)	> 14.32_−0.10
Fe III*	1895.48, 1914.07, 1926.32	−0.33, −0.49, −0.60	30089	$13 . 18_{- 0.11}^{+ 0.13}$ $13.18_{-0.11}^{+0.13}$
Co II	1941.28, 2012.17	−1.47, −1.43	0	$13 . 94_{- 0.10}^{+ 0.08}$ $13.94_{-0.10}^{+0.08}$
Co II*	2286.86	−0.51	3350	$14 . 05_{- 0.10}^{+ 0.08}$ $14.05_{-0.10}^{+0.08}$
Ni II	1751.91	−1.54	0	> 15.35_−0.21
Ni II*	2131.93	−2.58*	8394	$15 . 53_{- 0.11}^{+ 0.09}$ $15.53_{-0.11}^{+0.09}$
Ni II*	2207.41, 2265.16	−0.79, −0.83	10115	$13 . 59_{- 0.17}^{+ 0.12}$ $13.59_{-0.17}^{+0.12}$
Zn II	2026.14	−0.30	0	$13 . 87_{- 0.10}^{+ 0.08}$ $13.87_{-0.10}^{+0.08}$

Notes.

^(a)

Rest wavelength of the transition in vacuum. Multiple values, wherever mentioned, correspond to detection of multiple troughs for the given energy level of the ionic species.

^(b)

Logarithm of the oscillator strength of the transition. These were taken from the National Institute of Standards and Technology (NIST) Atomic Spectra Database vers. 5.11, unless marked otherwise. The values marked with an asterisk were obtained from Kurucz & Bell (1995), and the value for the Fe II 1902 transition was determined from our calculations described in Sect. 3.3.

^(c)

Lower-energy level of the transition. For Fe II, the indexes used for the energy levels in the CLOUDY modeling are shown in parentheses.

^(d)

Column density of the ionic transition. Measurements were obtained for unsaturated troughs, whereas saturated troughs only lead to lower limits on the column density of the transition.

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