Nobeyama Cygnus-X Survey: Physical Properties of C18O clumps in DR-6(W), DR-9 and DR-13S regions
Paper in proceeding, 2024

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

Molecular Lines: CO

Stars: Formation

Individual: Cygnus-X

PeVatrons

Author

I. Toledano–Juárez

University of Guadalajara

Eduardo De La Fuente

University of Guadalajara

K. Kawata

University of Tokyo

Miguel A. Trinidad

Daniel Tafoya

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Other publications Research

Mitsuyoshi Yamagishi

University of Tokyo

S. Takekawa

Kanagawa University

M. Ohnishi

University of Guadalajara

A. Nishimura

National Astronomical Observatory of Japan

S. Kato

National Astronomical Observatory of Japan

T. Sako

National Astronomical Observatory of Japan

M. Takita

National Astronomical Observatory of Japan

R. K. Yadav

National Astronomical Research Institute of Thailand

Proceedings of Science

18248039 (eISSN)

Vol. 444 631

38th International Cosmic Ray Conference, ICRC 2023
Nagoya, Japan,

Subject Categories (SSIF 2025)

Astronomy, Astrophysics, and Cosmology

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Latest update

6/2/2025 5

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