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Related papers: Gas Transfer Between the Inner 3-kpc Disk and the …

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We study the gas inflows towards the Galactic Central Molecular Zone (CMZ) based on the gas morphological and kinematic features from the MWISP in the region of l=1.2 deg--19.0 deg and |b|<3.0 deg. We find that the near dust lane extends to…

Astrophysics of Galaxies · Physics 2024-08-06 Yang Su , Shiyu Zhang , Yan Sun , Ji Yang , Qing-Zeng Yan , Shaobo Zhang , Zhiwei Chen , Xuepeng Chen , Xin Zhou , Lixia Yuan

We develop a simple dynamical model for the evolution of gas in the centres of barred spiral galaxies, using the Milky Way's Central Molecular Zone (CMZ, i.e., the central few hundred pc) as a case study. We show that, in the presence of a…

Astrophysics of Galaxies · Physics 2015-08-26 Mark R. Krumholz , J. M. Diederik Kruijssen

We use hydrodynamical simulations to study the Milky Way's central molecular zone (CMZ). The simulations include a non-equilibrium chemical network, the gas self-gravity, star formation and supernova feedback. We resolve the structure of…

The Galactic bar plays a critical role in the evolution of the Milky Way's Central Molecular Zone (CMZ), driving mass inward toward the Galactic Center via gas flows known as dust lanes. To explore the interaction between the CMZ and the…

The innermost region of the Milky Way harbors the central molecular zone (CMZ). This region contains a large amount of molecular gas but a poor star formation rate considering the densities achieved by the gas in this region. We used the…

Astrophysics of Galaxies · Physics 2025-01-29 Leonardo Chaves-Velasquez , Gilberto C. Gómez , Ángeles Pérez-Villegas

We study the characteristics of molecular gas in the central regions of spiral galaxies on the basis of our CO(J=1-0) imaging survey of 20 nearby spiral galaxies using the NRO and OVRO millimeter arrays. Condensations of molecular gas at…

Astrophysics · Physics 2010-04-21 K. Sakamoto , S. K. Okumura , S. Ishizuki , N. Z. Scoville

The structures and dynamics of the interstellar medium are governed by a combination of self-gravity, external gravity, and various sources of ordered and random motions on different spatial scales. This paper uses ALMA CO (3-2)…

Astrophysics of Galaxies · Physics 2026-04-27 Liam M. Wang , Jiayi Sun , Yu-Hsuan Teng , Eric W. Koch , Sanghyuk Moon , Elias Oakes , Erik Rosolowsky

The Milky Way's Central Molecular Zone (CMZ) is the largest concentration of dense molecular gas in the Galaxy, the structure of which is shaped by the complex interplay between Galactic-scale dynamics and extreme physical conditions.…

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 gas distribution and dynamics in the inner Galaxy present many unknowns as the origin of the asymmetry of the longitude-velocity (lv) diagram of the Central Molecular Zone (CMZ). On the other hand, there are recent evidences in the…

Astrophysics · Physics 2009-11-13 Nemesio Rodriguez-Fernandez , Francoise Combes

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

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

It is well known that the Galactic bar drives a gas inflow into the Central Molecular Zone, which fuels star formation, accretion onto the central super-massive black hole, and large-scale outflows. This inflow happens mostly through two…

Astrophysics of Galaxies · Physics 2019-01-16 Mattia C. Sormani , Ashley T. Barnes

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 is a barred spiral galaxy with "bar lanes" that bring gas towards the Galactic Center. Gas flowing along these bar lanes often overshoots, and instead of accreting onto the Central Molecular Zone, it collides with the bar lane…

Context: The bulk of the Molecular gas in the Central Molecular Zone (CMZ) of the Galactic center region shows warm kinetic temperatures, ranging from $>20$ K in the coldest and densest regions (n$\sim 10^{4-5}$ cm$^{-3}$) up to more than…

Astrophysics of Galaxies · Physics 2018-02-28 D. Riquelme , L. Bronfman , R. Mauersberger , R. Finger , C. Henkel , T. L. Wilson , P. Cortes-Zuleta

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

The interstellar medium in the Milky Way's Central Molecular Zone (CMZ) is known to be strongly magnetised, but its large-scale morphology and impact on the gas dynamics are not well understood. We explore the impact and properties of…

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

We use the hydrodynamical simulation of our inner Galaxy presented in Armillotta et al. (2019) to study the gas distribution and kinematics within the CMZ. We use a resolution high enough to capture the gas emitting in dense molecular…

Astrophysics of Galaxies · Physics 2020-03-04 Lucia Armillotta , Mark R. Krumholz , Enrico M. Di Teodoro
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