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Star Formation in the Central Molecular Zone of the Milky Way

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arxiv 2203.11223 v1 pith:RXGGWBH4 submitted 2022-03-21 astro-ph.GA

Star Formation in the Central Molecular Zone of the Milky Way

classification astro-ph.GA
keywords formationmolecularstarcentralextremegalacticmattermilky
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The Central Molecular Zone (CMZ) is a ring-like accumulation of molecular gas in the innermost few hundred parsecs of the Milky Way, generated by the inward transport of matter driven by the Galactic bar. The CMZ is the most extreme star-forming environment in the Galaxy. The unique combination of large-scale dynamics and extreme interstellar medium conditions, characterised by high densities, temperatures, pressures, turbulent motions, and strong magnetic fields, make the CMZ an ideal region for testing current star and planet formation theories. We review the recent observational and theoretical advances in the field, and combine these to draw a comprehensive, multi-scale and multi-physics picture of the cycle of matter and energy in the context of star formation in the closest galactic nucleus.

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Cited by 13 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The Keplerian disk, envelope, and streamers surrounding an early O-type protostar in the Sagittarius C cloud of the Central Molecular Zone

    astro-ph.GA 2026-05 conditional novelty 7.0

    A ~40 solar-mass protostar in Sgr C is surrounded by a Keplerian disk of centrifugal radius 1300 au, free-falling streamers, and an envelope accretion rate of 7e-3 solar masses per year.

  2. JWST's first view of the most vigorously star-forming cloud in the Galactic center -- Sagittarius B2

    astro-ph.GA 2025-09 unverdicted novelty 7.0

    New JWST multi-filter imaging of Sgr B2 detects previously hidden massive stars and ionized structures while finding no extended young stellar objects, implying star formation there has only recently begun.

  3. VAPOLA -- A multi-year, multi-band polarization survey of AGN and Sgr A* at mm wavelengths with ALMA I. Survey Overview and Science-Ready Archival Products

    astro-ph.GA 2026-07 conditional novelty 6.0

    VAPOLA releases multi-epoch multi-band ALMA full-Stokes products and polarimetric fits for AGN and Sgr A* via an automated pipeline and web portal.

  4. VAPOLA -- A multi-year, multi-band polarization survey of AGN and Sgr A* at mm wavelengths with ALMA I. Survey Overview and Science-Ready Archival Products

    astro-ph.GA 2026-07 accept novelty 6.0

    An automated pipeline and web portal deliver science-ready, full-polarization ALMA data products from VLBI campaigns for AGN and Sgr A* across Bands 3, 6, and 7.

  5. IRIS: Deciphering Spectral-Line Imagery of the Galactic Center by Machine-Learning on Simulations

    astro-ph.GA 2026-07 unverdicted novelty 6.0

    A CNN trained on AREPO simulations and synthetic observations reverts edge-on 13CO spectral data to top-down views of the CMZ as a proof-of-concept for supervised reversion.

  6. Simulations of gas inflow in the Milky Way I. Stellar-Feedback-Regulated Transport from the Central Molecular Zone to the Circumnuclear disk

    astro-ph.GA 2026-05 unverdicted novelty 6.0

    Stellar feedback regulates radial gas inflow in the Milky Way center, yielding time-averaged rates that fall from 5e-3 to 1e-6 solar masses per year with both smooth secular and episodic components.

  7. How Should We Understand the Core Mass Function? A memo of the CMF2IMF conference at ESO Garching

    astro-ph.GA 2026-07 conditional novelty 5.5

    High-mass CMF slopes depend strongly on minimum fitting mass; early-stage cores (ASHES) appear steeper, consistent with an evolving high-mass end.

  8. Molecular Clouds at the Edge of the Galaxy II. Physical properties and scaling relations

    astro-ph.GA 2026-04 accept novelty 5.0

    New CO(2-1) observations of 112 clumps in outer Galactic clouds (14-23 kpc) yield velocity dispersion-size and mass-size power laws plus a declining virial parameter trend indicating most clumps are gravitationally unbound.

  9. The Nearest Galactic Nucleus: Studying the Galactic Centre with SKA-Mid

    astro-ph.GA 2026-06 conditional novelty 4.0

    A multi-wavelength SKA1-Mid continuum survey of ~290 pc × 60 pc around Sgr A* plus decade-long NSC monitoring can address remnant, pulsar, massive-star, star-formation and magnetic-field science with one dataset.

  10. What Heats the Dense Gas in the Galactic Center?

    astro-ph.GA 2026-04 unverdicted novelty 4.0

    Kinetic temperatures in three Galactic Center molecular clouds are revised to 84-95 K using additional formaldehyde lines, indicating combined cosmic-ray and turbulent heating rather than extreme values from prior studies.

  11. The Nearest Galactic Nucleus: Studying the Galactic Centre with SKA-Mid

    astro-ph.GA 2026-06 accept novelty 3.5

    A large-area multi-wavelength SKA-Mid continuum survey of the Galactic Centre plus repeated deep NSC observations can address multiple key science questions with one dataset.

  12. The Nearest Galactic Nucleus: Studying the Galactic Centre with SKA-Mid

    astro-ph.GA 2026-06 unverdicted novelty 3.0

    Advocates for a 2deg x 0.4deg multi-wavelength SKA-Mid continuum survey plus decade-long monitoring of the Galactic Centre nuclear star cluster to address multiple science questions with one dataset.

  13. Spectroscopic surveys with the SKA probing the ionized and molecular Milky Way

    astro-ph.GA 2026-06 unverdicted novelty 2.0

    The chapter proposes SKA spectroscopic surveys of the inner and outer Milky Way using OH, CH, radio recombination lines, and H2CO to study molecular cloud formation, ionized gas properties, and CO-dark molecular gas.