7.6$\pm$1.4\

&\
$i_\mathrm{[CII]}$ & \[deg\] & 39$\pm$5 & 58$\pm$5\
$M_\mathrm{dyn}^\mathrm{[CII]}$ ($R\leq$2 kpc) & \[$10^{10}$ M$_\odot$\] & $6.2\pm5.5$ & $2.7\pm1.6$\
$M_\mathrm{dyn}^\mathrm{CO} (R<R_{1/2}^\mathrm{CO})$ & \[$10^{10}$M$_\odot$\] & $11 \pm 2$ & $11 \pm 5$\

\
\
\

Spectral energy distribution modelling {#subsec:SED_models}
--------------------------------------

We infer the global stellar and interstellar medium properties of ALESS 49.1 and 57.1 from the spatially-integrated spectral energy distributions (SEDs) using the [MagPhys]{} package [@daCunha2008], specifically its high-redshift extension [@daCunha2015]. These differ from the previously published SEDs [@daCunha2015] by using the CO(3–2)-derived spectroscopic redshifts compared to the photometric ones from @daCunha2015, and inclusion of ALMA Bands 3/4/8 continuum flux-densities. Namely, in addition to the Band 8 continuum measurements from Table \[tab:targets+observed\], we include Band 4 continuum measurements ($S_\mathrm{2.1mm}$ = 380$\pm$100 $\mu$Jy and 65$\pm$50 $\mu$Jy for ALESS 49.1 and 57.1; da Cunha et al., in prep.), as well as the ALMA Band 3 continuum measurement for ALESS 49.1, $S_\mathrm{3.3mm}=37\pm5$ $\mu$Jy [@Wardlow2018].

The [MagPhys]{}-inferred source properties are listed in Table \[tab:source\_properties\], the observed multi-wavelength photometry and [MagPhys]{} spectral energy distribution models are provided in Appendix \[sec:appendix\_2\]. The estimated dust temperatures $T_\mathrm{dust}=47^{+5}_{-9}$ K and $52^{+10}_{-6}$ K in ALESS 49.1 and 57.1 are warmer than the median $T_\mathrm{dust}$=42$\pm$2 K of the ALESS SMGs 