MALS discovery of a rare H I 21 cm absorber at z ∼ 1.35: Origin of the absorbing gas in powerful active galactic nuclei

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Volume 687 (July 2024)

A&A, 687 (2024) A50

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Table A.2.

Rest equivalent width (W_r in Å) estimates from optical spectra.

Source name	z_em(opt)	Reference	λ_obs (Å)	λ_rest (Å)	Line	W_r (Å)
(1)	(2)	(3)	(4)	(5)	(6)	(7)

Quasars


J0111+3906^†	0.67	1	...	2694−5567	MgII2796, MgI2853	< 4.633, < 4.633
J0801+1414	1.1946	2	3800−9200	1731−4192	MgII2796, MgI2853	1.865, 1.245
J0909+4253	0.67	2	3800−9200	2275−5509	MgII2796, MgI2853	< 0.744, < 0.744
J1203+0414	1.22429	2	3800−9200	1708−4136	MgII2796, MgI2853	< 0.270, < 0.266
J1458+3720	0.33324	2	3800−9200	2852−6900	...	...
J1955+5131	1.223	3	5502−9841	2475−4427	MgII2796, MgI2853	< 0.316, < 0.139


Radio galaxies


J0834+5534	0.242	2	3800−9200	3059−7407	NaI5891	2.0
J0901+2901	0.194	2	3800−9200	3182−7705	CaII3934, NaI5891	6.8, 1.5
J1013+2448	0.94959	4	3800−9200	1949−4718	CaII3934	1.2
J1247+4900	0.20691	2	3800−9200	3148−7623	CaII3934	6.0
J1400+6210	0.431	2	3800−9200	2655−6429	CaII3934, NaI5891	5.9, 2.7
J1648+2224	0.82266	4	3800−9200	2085−5047	CaII3934	7.0
J2355+4950^†	0.2379	1	...	3036−7962	CaII3934, NaI5891	7.8, 3.8

References. (1) Lawrence et al. (1996); (2) Adelman-McCarthy et al. (2008); (3) Torrealba et al. (2012); (4) Albareti et al. (2017) Column 1: Source name (J2000); Column 2: Optical redshift; Column 3: Optical spectrum reference; Column 4: λ range (in Å) covered in the observed frame; Column 5: λ range (in Å) covered in the rest frame; Column 6: Metal lines covered by the wavelength range; Column 7: Rest equivalent width (W_r) estimates or upper limits.

^† the available optical spectrum is in the rest frame.

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