Probing the kinematics and chemistry of the hot core Mon R2 IRS 3 using ALMA observations

We present high angular resolution 1.1mm continuum and spectroscopic ALMA observations of the well-known massive proto-cluster Mon R 2 IRS 3.The image at shows two components, 3 A B, that are separated by $\sim$0.65$"$. estimate is responsible $\sim$80 % flux, being most component. explore chemistry based on observations. In particular, we have detected intense lines S-bearing species such as SO, SO$_2$, H$_2$CS OCS, Complex Organic Molecules (COMs) methyl formate (CH$_3$OCHO) dimethyl ether (CH$_3$OCH$_3$). The integrated intensity maps show a compact clump centered A, except emission COMs more towards near-IR nebula located to south HC$_3$N whose peak $\sim$0.5$"$ NE from A. kinematical study suggests molecular mainly coming rotating ring and/or an unresolved disk. Additional components traced ro-vibrational HCN $\nu_2$=1 3$\rightarrow$2 line which probing inner disk/jet region, weak CH$_3$OCHO, likely arising walls cavity excavated outflow. Based SO$_2$ derive gas kinetic temperature T$_k$$\sim$ 170 K abundant with abundance $\sim$ 1.3$\times$10$^{-7}$, $\chi$(SO/SO$_2$) 0.29. Assuming solar abundance, accounts for $\sim$1 sulphur budget.