ALMA 13CO(J = 1–0) observations of NGC 604 in M33: physical properties of molecular clouds

We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of $\mathrm{^{13}CO(J=1-0)}$ line and 104 GHz continuum emission from NGC 604, a giant HII region (GHR) in the nearby spiral galaxy M33. Our high spatial resolution images ( 3.2"$\times$ 2.4", corresponding to $13 \times 10$ pc physical scale) allow us detect fifteen molecular clouds. find offsets between $^{13}CO$ also near centre GHR. The identified clouds have sizes ranging 5-21 pc, linewidths 0.3-3.0 $\mathrm{kms^{-1}}$ luminosity-derived masses (0.4-80.5) $\times 10^3$ M$_{\bigodot}$. These are virial equilibrium, with spearman correlation coefficient 0.98. linewidth-size relationship for these is offset relations Milky Way 300, although this may be an artefact dendrogram process.