207 molecular clouds distance measurements; MWISP

Based on Gaussian decomposition and clustering for 13CO lines, over 70% of the fluxes are recovered. With the identification result of 13CO structures, two models are designed to measure the distances of the molecular gas in velocity crowding regions.

The distances of more than 200 large 13CO structures are obtained toward the 150 deg^2^ region. Additionally, tens of the identified MC structures coincide well with masers and/or intense mid-IR emission. We find multiple gas layers toward the region: (1) the extensive gas structures composing the Cygnus Rift from 700pc to 1kpc across the whole region; (2) the ~1.3kpc gas layer mainly in the Cygnus X South region; and (3) the 1.5kpc dense filament at the Cygnus X North region and many cometary clouds shaped by Cygnus OB2.