English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

At redshift $z>5$ the far-infrared (FIR) continuum spectra of main-sequencegalaxies are sparsely sampled, often with a single data point. The dusttemperature $T_{\rm d, SED}$ thus has to be assumed in the FIR continuumfitting. This introduces large uncertainties regarding the derived dust mass($M_{\rm d}$), FIR luminosity, and obscured fraction of the star formationrate. These are crucial quantities to quantify the effect of dust obscurationin high-$z$ galaxies. To overcome observations limitations, we introduce a newmethod that combines dust continuum information with the overlying $\hbox{[C$\scriptstyle\rm II $]} 158\mu$m line emission. By breaking the $M_{\rm d} -T_{\rm d, SED}$ degeneracy, with our method, we can reliably constrain the dusttemperature with a single observation at $158\mu$m. This method can be appliedto all ALMA and NOEMA $\hbox{[C $\scriptstyle\rm II $]}$ observations andexploited in ALMA Large Programs such as ALPINE and REBELS targeting $\hbox{[C$\scriptstyle\rm II $]}$ emitters at high-$z$. We also provide a physicalinterpretation of the empirical relation recently found between $molecular$ gasmass and $\hbox{[C $\scriptstyle\rm II $]}$ luminosity. We derive an analogousrelation linking the $total$ gas surface density and $\hbox{[C $\scriptstyle\rmII $]}$ surface brightness. By combining the two, we predict the cosmicevolution of the surface density ratio $\Sigma_{\rm H_2} / \Sigma_{\rm gas}$.We find that $\Sigma_{\rm H_2} / \Sigma_{\rm gas}$ slowly increases withredshift, which is compatible with current observations at $0 < z < 4$.

Dust temperature in ALMA $\hbox{[C $\scriptstyle\rm II $]}$-detected high-$z$ galaxies