Unveiling large-scale rotational motions in the intragroup medium at z ∼ 1 through gravitational-arc tomography

Open Access

Table 4.

Properties from MUSE integrated spectra for absorption lines at z ≃ 1.17.

Object	Beam type	d_proj^a	Δv^b	σ_v^c	W_r²⁷⁹⁶	$\frac{W_{r} (λ 2803)}{W_{r} (λ 2796)}$ $Mathematical equation: $ \frac{W_{\mathrm{r}}(\lambda 2803)}{W_{\mathrm{r}}(\lambda 2796)} $$	$\frac{W_{r} (λ 2600)}{W_{r} (λ 2796)}$ $Mathematical equation: $ \frac{W_{\mathrm{r}}(\lambda 2600)}{W_{\mathrm{r}}(\lambda 2796)} $$	$\frac{W_{r} (λ 2852)}{W_{r} (λ 2796)}$ $Mathematical equation: $ \frac{W_{\mathrm{r}}(\lambda 2852)}{W_{\mathrm{r}}(\lambda 2796)} $$
		[kpc]	[km s⁻¹]	[km s⁻¹]	[Å]
G1	DtB/extended	15.1	−21 ± 10	151 ± 9	3.61 ± 0.32	1.11 ± 0.14	0.99 ± 0.16	0.28 ± 0.07
G2	DtB/extended	4.9	+20 ± 11	156 ± 9	4.16 ± 0.40	1.02 ± 0.11	0.79 ± 0.15	0.63 ± 0.10
G3	DtB/extended	40.1	−30 ± 47	245 ± 36	4.63 ± 1.00	0.66 ± 0.23	0.70 ± 0.27	0.38 ± 0.16
G5	DtB/extended	64.6	…	…	< 2.28^d	…	…	…

Arc	extended	20.8	+61 ± 2	150 ± 2	4.09 ± 0.05	0.99 ± 0.02	0.78 ± 0.02	0.35 ± 0.02
Ci1	extended	34.0	+16 ± 7	134 ± 6	3.70 ± 0.15	0.98 ± 0.07	0.75 ± 0.09	0.36 ± 0.05
Ci2	extended	62.6	−33 ± 11	132 ± 11	3.54 ± 0.40	0.87 ± 0.14	0.46 ± 0.13	0.22 ± 0.08

QSO	point source	32.8	+34 ± 18	71 ± 15	2.30 ± 0.39	1.00 ± 0.24	0.99 ± 0.47	0.55 ± 0.24
gal2	extended	95.2	…	…	< 1.30^d	…	…	…
gal3	∼point source	163.5	…	…	≤1.44^e	…	…	…

Notes. ^aProjected distance from the group’s barycentre (absorber plane). ^bRelative to the mass-weighted mean redshift of the group (z_sys = 1.16663). ^cDeconvolved from the instrumental line spread function (σ_inst = 1.083 Å at λ_obs = 6060 Å). ^dUpper limit at 2σ. ^eBlend.

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