3D CMZ. I. Central Molecular Zone overview
The Central Molecular Zone (CMZ) is the largest reservoir of dense molecular gas in the Galaxy and is heavily obscured in the optical and near-IR. We present an overview of the far-IR dust continuum, where the molecular clouds are revealed, provided by Herschel in the inner 40° (∣l∣ < 20°) of the...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2025 May 8
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| In: |
The astrophysical journal
Year: 2025, Jahrgang: 984, Heft: 2, Pages: 1-16 |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/adb5f0 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.3847/1538-4357/adb5f0 Verlag, kostenfrei, Volltext: https://iopscience.iop.org/article/10.3847/1538-4357/adb5f0 
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| Verfasserangaben: | Cara Battersby, Daniel L. Walker, Ashley Barnes, Adam Ginsburg, Dani Lipman, Danya Alboslani, H. Perry Hatchfield, John Bally, Simon C.O. Glover, Jonathan D. Henshaw, Katharina Immer, Ralf S. Klessen, Steven N. Longmore, Elisabeth A.C. Mills, Sergio Molinari, Rowan Smith, Mattia C. Sormani, Robin G. Tress, and Qizhou Zhang |
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| 520 | |a The Central Molecular Zone (CMZ) is the largest reservoir of dense molecular gas in the Galaxy and is heavily obscured in the optical and near-IR. We present an overview of the far-IR dust continuum, where the molecular clouds are revealed, provided by Herschel in the inner 40° (∣l∣ < 20°) of the Milky Way with a particular focus on the CMZ. We report a total dense gas (N(H2) > 1023 cm−2) CMZ mass of M⊙ and confirm that there is a highly asymmetric distribution of dense gas, with about 70%-75% at positive longitudes. We create and publicly release complete fore/background-subtracted column density and dust temperature maps in the inner 40° (∣l∣ < 20°) of the Galaxy. We find that the CMZ clearly stands out as a distinct structure, with an average mass per longitude that is at least 3× higher than the rest of the inner Galaxy contiguously from 18 > ℓ > −13. This CMZ extent is larger than previously assumed, but is consistent with constraints from velocity information. The inner Galaxy’s column density peaks towards the SgrB2 complex with a value of about 2 × 1024 cm−2, and typical CMZ molecular clouds are about N(H2) ∼ 1023 cm−2. Typical CMZ dust temperatures range from ∼12-35 K with relatively little variation. We identify a ridge of warm dust in the inner CMZ that potentially traces the base of the northern Galactic outflow seen with MEERKAT. | ||
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| 700 | 1 | |a Lipman, Dani |e VerfasserIn |4 aut | |
| 700 | 1 | |a Alboslani, Danya |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Molinari, Sergio |e VerfasserIn |4 aut | |
| 700 | 1 | |a Smith, Rowan |e VerfasserIn |4 aut | |
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| 700 | 1 | |a Tress, Robin G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Zhang, Qizhou |e VerfasserIn |4 aut | |
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