Distances to molecular clouds in the Galactic longitude l=10-20 deg from the MWISP 12CO 1-0 survey
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866911601180803072 |
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| author | Mei, Juan Chen, Zhiwei Fang, Min Zhang, Miaomiao Zhang, Shiyu Jiang, Zhibo |
| author_facet | Mei, Juan Chen, Zhiwei Fang, Min Zhang, Miaomiao Zhang, Shiyu Jiang, Zhibo |
| contents | We present distances to 56 molecular clouds within $10\degr \leq l \leq 20\degr$ and $|b| \leq 5.25\degr$ from the Milky Way Imaging Scroll Painting (MWISP) $^{12}$CO survey, 47 of which are first-time determinations. The molecular clouds were identified using the DBSCAN algorithm, and their distances were measured with the model-calibrated color-distance method using $J-K{_s}$ colors and the distances provided by 2MASS and \textit{Gaia} EDR3. The distances range from $\sim$275 pc to $\sim$2118 pc. We also derived the physical properties of molecular clouds and found a moderate correlation between the dust extinction and the $^{12}$CO integrated intensity. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2604_15658 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Distances to molecular clouds in the Galactic longitude l=10-20 deg from the MWISP 12CO 1-0 survey Mei, Juan Chen, Zhiwei Fang, Min Zhang, Miaomiao Zhang, Shiyu Jiang, Zhibo Astrophysics of Galaxies We present distances to 56 molecular clouds within $10\degr \leq l \leq 20\degr$ and $|b| \leq 5.25\degr$ from the Milky Way Imaging Scroll Painting (MWISP) $^{12}$CO survey, 47 of which are first-time determinations. The molecular clouds were identified using the DBSCAN algorithm, and their distances were measured with the model-calibrated color-distance method using $J-K{_s}$ colors and the distances provided by 2MASS and \textit{Gaia} EDR3. The distances range from $\sim$275 pc to $\sim$2118 pc. We also derived the physical properties of molecular clouds and found a moderate correlation between the dust extinction and the $^{12}$CO integrated intensity. |
| title | Distances to molecular clouds in the Galactic longitude l=10-20 deg from the MWISP 12CO 1-0 survey |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2604.15658 |