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- W4210910588 abstract "Abstract We present a large-scale simultaneous survey of the CO isotopologues ($rm {}^{12}{CO}$, $rm{}^{13}{CO}$, and $rm{C}{}^{18}{O}$) J = 1 ${-}$ 0 line emission toward the Galactic plane region of l = 106.65$^circ$ to 109.50$^circ$ and b = ${-}$1.85$^circ$ to 0.95$^circ$ using the Purple Mountain Observatory 13.7 m millimeter-wavelength telescope. Except for the molecular gas in the solar neighborhood, the emission from the molecular gas in this region is concentrated in the velocity range of [${-}$60, ${-}$35] $rm km~s^{-1}$. The gas in the region can be divided into four clouds, with mass in the range of $sim$10$^{3}$ to 10$^{4}$,${M_{sun}}$. We have identified 25 filaments based on the $rm {}^{13}{CO}$ data. The median excitation temperature, length, line mass, line width, and virial parameter of the filaments are 10.89 K, 8.49 pc, 146.11 ${M}_{odot}~ rm pc^{-1}$, 1.01 $rm km~s^{-1}$, and 3.14, respectively. Among these filaments, eight have virial parameters of $<$~2, suggesting that they are gravitationally bound and can lead to star formation. Nineteen {H small {II}} regions or candidates have previously been found in the region and we investigate the relationships between these {H small {II}} regions/candidates and surrounding molecular clouds in detail. Using morphology similarity and radial velocity consistency between {H small {II}} regions/candidates and molecular clouds as evidence for association, and raised temperature and velocity broadening as signatures of interaction, we propose that 12 {H small {II}} regions/candidates are associated with their surrounding molecular clouds. In the case of the {H small {II}} region of S142, the energy of the {H small {II}}region is sufficient to maintain the turbulence in the surrounding molecular gas." @default.
- W4210910588 created "2022-02-09" @default.
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- W4210910588 date "2022-02-08" @default.
- W4210910588 modified "2023-09-29" @default.
- W4210910588 title "Molecular Clouds Associated with {H small{II}} regions and Candidates within l = 106.65$^circ$ to 109.50$^circ$ and b = ${-}$1.85$^circ$ to 0.95$^circ$" @default.
- W4210910588 doi "https://doi.org/10.1088/1674-4527/ac52a0" @default.
- W4210910588 hasPublicationYear "2022" @default.
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