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The Central Molecular Zone (CMZ, the central 500 pc of the Milky Way) contains the largest reservoir of high-density molecular gas in the Galaxy, but forms stars at a rate 10-100 times below commonly-used star formation relations. We…

Astrophysics of Galaxies · Physics 2017-02-22 J. M. Diederik Kruijssen

The Milky Way's central molecular zone (CMZ) has emerged in recent years as a unique laboratory for the study of star formation. Here we use the simulations presented in Tress et al. 2020 to investigate star formation in the CMZ. These…

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…

Astrophysics of Galaxies · Physics 2022-03-23 Jonathan D. Henshaw , Ashley T. Barnes , Cara Battersby , Adam Ginsburg , Mattia C. Sormani , Daniel L. Walker

We present a study of the gas cycle and star formation history in the central 500 pc of the Milky Way, known as Central Molecular Zone (CMZ). Through hydrodynamical simulations of the inner 4.5 kpc of our Galaxy, we follow the gas cycle in…

Astrophysics of Galaxies · Physics 2019-10-23 L. Armillotta , M. R. Krumholz , E. M. Di Teodoro , N. M. McClure-Griffiths

The Central Molecular Zone (CMZ) is the most extreme star-forming environment in the Milky Way in terms of gas pressures, densities, temperatures, and dynamics. It acts as a critical test bed for developing star formation theories…

Astrophysics of Galaxies · Physics 2019-12-06 Maya A. Petkova , J. M. Diederik Kruijssen

The environment within the inner few hundred parsecs of the Milky Way, known as the "Central Molecular Zone" (CMZ), harbours densities and pressures orders of magnitude higher than the Galactic Disc; akin to that at the peak of cosmic star…

Astrophysics of Galaxies · Physics 2017-02-22 Ashley Thomas Barnes , Steven Longmore , Cara Battersby , John Bally , J. M. Diederik Kruijssen

During the last $\sim$ 30 Myr the nuclear stellar disk in the Galactic center has been the most prolific star forming region of the Milky Way when averaged by volume. Remarkably, the combined mass of the only three clusters present today in…

Astrophysics of Galaxies · Physics 2023-09-13 Á. Martínez-Arranz , R. Schödel , F. Nogueras-Lara , M. Hosek , F. Najarro

The conversion of gas into stars is a fundamental process in astrophysics and cosmology. Stars are known to form from the gravitational collapse of dense clumps in interstellar molecular clouds, and it has been proposed that the resulting…

We present the first systematic study of the density structure of clouds found in a complete sample covering all major molecular clouds in the Central Molecular Zone (CMZ; inner $\sim{}200~\rm{}pc$) of the Milky Way. This is made possible…

We present a dynamical model for gas transport, star formation, and winds in the nuclear regions of galaxies, focusing on the Milky Way's Central Molecular Zone (CMZ). In our model angular momentum and mass are transported by a combination…

Astrophysics of Galaxies · Physics 2017-01-18 Mark R. Krumholz. , J. M. Diederik Kruijssen , Roland M. Crocker

The closest galaxy center, our own Central Molecular Zone (CMZ; the central 500 pc of the Milky Way), is a powerful laboratory for studying the secular processes that shape galaxies across cosmic time, from large-scale gas flows and star…

The infall and merger scenario of massive clusters in the Milky Way's potential well, as one of the Milky Way formation mechanisms, is reexamined to understand how the stars of the merging clusters are redistributed during and after the…

Astrophysics of Galaxies · Physics 2023-06-21 Maria Gabriela Navarro , Roberto Capuzzo-Dolcetta , Manuel Arca-Sedda , Dante Minniti

The nuclear star cluster of the Milky Way is a unique target in the Universe. Contrary to extragalactic nuclear star clusters, using current technology it can be resolved into tens of thousands of individual stars. This allows us to study…

Astrophysics · Physics 2014-11-18 R. Schoedel , D. Merritt , A. Eckart

The central region of the Milky Way provides a unique laboratory for a systematic, spatially-resolved population study of evolved massive stars of various types in a relatively high metallicity environment. We have conducted a…

Astrophysics of Galaxies · Physics 2015-06-04 H. Dong , Q. D. Wang , M. R. Morris

The central parsec of the Milky Way hosts two puzzlingly young stellar populations, a tight isotropic distribution of B stars around SgrA* (the S-stars) and a disk of OB stars extending to ~0.5pc. Using a modified version of Sverre…

Astrophysics of Galaxies · Physics 2017-04-19 J. A. Petts , A. Gualandris

We investigate star formation at very early evolutionary phases in five massive clouds in the inner 500 pc of the Galaxy, the Central Molecular Zone. Using interferometer observations of H$_2$O masers and ultra-compact H II regions, we find…

The central molecular zone (CMZ) hosts some of the most massive and dense molecular clouds and star clusters in the Galaxy, offering an important window into star formation under extreme conditions. Star formation in this extreme…

Astrophysics of Galaxies · Physics 2017-02-22 J. D. Henshaw

We recently proposed that the star-forming potential of dense molecular clouds in the Central Molecular Zone (CMZ, i.e. the central few 100 pc) of the Milky Way is linked to their orbital dynamics, potentially giving rise to an…

Astrophysics of Galaxies · Physics 2015-06-23 J. M. Diederik Kruijssen , James E. Dale , Steven N. Longmore

Like most galaxies, the Milky Way harbors a supermassive black hole (SMBH) at its center, surrounded by a nuclear star cluster. In this dense star cluster, direct collisions can occur between stars before they evolve off the main-sequence.…

Astrophysics of Galaxies · Physics 2023-04-24 Sanaea C. Rose , Smadar Naoz , Re'em Sari , Itai Linial

The 3D structure of The Milky Way's Central Molecular Zone (CMZ) informs our understanding of star formation cycles, black hole accretion, and the evolution of galactic nuclei. However, a comprehensive 3D model has remained elusive, as no…

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