We report on ALMA observations of continuum and molecular line emission with 0.''4 resolution towards the high-mass star-forming region G35.20-0.74 N. Two dense cores are detected in typical hot... Show moreWe report on ALMA observations of continuum and molecular line emission with 0.''4 resolution towards the high-mass star-forming region G35.20-0.74 N. Two dense cores are detected in typical hot-core tracers (e.g., CH$_{3}$CN) that reveal velocity gradients. In one of these cores, the velocity field can be fitted with an almost edge-on Keplerian disk rotating about a central mass of ~{}18 M$_{⊙}$. This finding is consistent with the results of a recent study of the CO first overtone bandhead emission at 2.3 {$μ$}m towards G35.20-0.74 N. The disk radius and mass are {gsim}2500 au and ~{}3 M$_{⊙}$. To reconcile the observed bolometric luminosity (~{}3 { imes} 10$^{4}$ L$_{⊙}$) with the estimated stellar mass of 18 M$_{⊙}$, we propose that the latter is the total mass of a binary system. Show less
