Cygnus-X is considered a region of interest for high-energy astrophysics,
since the Cygnus OB2 association has been confirmed as a PeVatron in the Cygnus
cocoon. In this research note, we present new high-resolution (16'')
12,13CO(J=1→0) and C18O (J=1→0) observations
obtained with the Nobeyama 45-m radiotelescope, to complement the Nobeyama
Cygnus-X Survey. We discovered 19 new C18O clumps associated with the
star-forming regions DR-6W, DR-9, and DR13S. We present the physical parameters
of these clumps, which are consistent with the neighboring covered regions. We
confirm the clumpy nature of these regions and of a filament located between
DR6 and DR6W. These results strongly suggest that star formation occurs in
these regions with clumps of sizes ∼10−1 pc, masses ∼102
M⊙, and H2 densities of ∼104 cm−3.Comment: 8 pages, 3 Figures, 1 Table. https://pos.sissa.it/444/631/pd