Massive dusty multiphase outflow in local merger shows no sign of slowing on kiloparsec scales

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Volume 707 (March 2026)

A&A, 707 (2026) A77

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Table 4.

Total outflow properties by components, gas phases, and tracers.

Outflow component	Tracer	$⟨ v ⟩ [\frac{km}{s}]$ $Mathematical equation: $ \langle v\rangle\,\left[\frac{\mathrm{km}}{\mathrm{s}}\right] $$	$v_{\max} [\frac{km}{s}]$ $Mathematical equation: $ v_{\mathrm{max}}\,\left[\frac{\mathrm{km}}{\mathrm{s}}\right] $$	⟨r_out⟩ [kpc]	r_out, max [kpc]	M_out [10⁷ M_⊙]	${\dot{M}}_{out} [\frac{M_{⊙}}{yr}]$ $Mathematical equation: $ \dot{M}_{\mathrm{out}}\,\left[\frac{M_\odot}{\mathrm{yr}}\right] $$
molecular blue SE	CO(1-0)	160	310	1.7	5.3	340 ± 100	300 ± 90
molecular red SE	CO(1-0)	170	510	1.8	5.0	430 ± 130	420 ± 130
molecular total SE	CO(1-0)	170	510	1.7	5.3	800 ± 200	700 ± 200
neutral SE	NaI	360	500	2.5	5.5	51 ± 12	88 ± 14
ionized SE (total)	Hα	190	570	2.9	7.0	9.2 ± 3	11 ± 4.5
ionized SE (total)	[OIII]	150	540	3.0	7.0	0.5 ± 0.31	0.5 ± 0.30
ionized SE (high-v)	Hα	430	570	2.1	5.5	2.2 ± 0.8	10 ± 3.7
ionized SE (high-v)	[OIII]	400	540	1.9	4.7	0.12 ± 0.07	0.5 ± 0.30

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