The MeerKAT Absorption Line Survey (MALS) data release 3: Cold atomic gas associated with the Milky Way

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Volume 698 (May 2025)

A&A, 698 (2025) A120

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Table 2

Details of central+off-axis (228), central-only (60), and off-axis-only (25) pointing subsets.

	Central+off-axis	Central-only	Off-axis-only
Total sight lines (central + off-axis)	11 008	2956	1277
Central sight lines (with peak S/N > 6 detection)	228	60	0
Off-axis sight lines (with peak S/N > 6 detection)	1678	0	38
Off-axis sight lines (with $\int τ_{6 σ}^{o f f} d v < τ_{int}^{cen}$ $\[\int \tau_{6 \sigma}^{o f f} \mathrm{dv}<\tau_{\text {int }}^{\text {cen}}\]$ )^(†)	1822	77	−
V_shift[km s⁻¹] (median, σ)	(0, 8.9)	−	−
Line width, σ_line [km s⁻¹] (median, σ)	(2.7, 2.3)	−	−
\|Δτ\| (median, σ)	(0.10, 0.28)	−	−
\|Δτ_rel\| (median, σ)	(0.18, 0.16)	−	−
\|Δτ_int\| (median, σ)^(‡)	(0.77, 2.33)	−	−
\|Δτ_rel,int\| (median, σ)^(‡)	(0.15, 0.16)	−	−

Notes. ^(†)Off-axis sight lines sensitive to detect central absorption. ^(‡)Same as |Δτ| and |Δτ_rel| but estimated using integrated optical depths.

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