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相关论文: Tidal stability of giant molecular clouds in the L…

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Stars form in the densest regions of molecular clouds, however, there is no universal understanding of the factors that regulate cloud dynamics and their influence on the gas-to-stars conversion. This study considers the impact of Galactic…

星系天体物理 · 物理学 2024-07-01 Raffaele Rani , Jia-Lun Li , Toby J. T. Moore , David J. Eden , Andrew J. Rigby , Geumsook Park , Yueh-Ning Lee

We use the star formation history of the Small Magellanic Cloud (SMC) to place quantitative limits on the effect of tidal interactions and gas infall on the star formation and chemical enrichment history of the SMC. The coincident timing of…

天体物理学 · 物理学 2009-11-10 Dennis Zaritsky , Jason Harris

Large-scale star formation in disk galaxies is hypothesized to be driven by global gravitational instability. The observed gas surface density is commonly used to compute the strength of gravitational instability, but according to this…

天体物理学 · 物理学 2009-11-13 Chao-Chin Yang , Robert A. Gruendl , You-Hua Chu , Mordecai-Mark Mac Low , Yasuo Fukui

The Magellanic Mopra Assessment (MAGMA) is a high angular resolution CO mapping survey of giant molecular clouds (GMCs) in the Large and Small Magellanic Clouds using the Mopra Telescope. Here we report on the basic physical properties of…

Recent observations have found that the age distribution of star clusters (SCs) in the Small Magellanic Cloud (SMC) shows a sharp peak around 2 Gyr ago. However, it is theoretically unclear what physical processes are responsible for such…

星系天体物理 · 物理学 2021-12-30 Mia L Williams , Kenji Bekki , Madeleine L McKenzie

We investigate the formation and evolution of giant molecular clouds (GMCs) in a Milky-Way-like disk galaxy with a flat rotation curve. We perform a series of 3D adaptive mesh refinement (AMR) numerical simulations that follow both the…

天体物理学 · 物理学 2009-07-22 Elizabeth J. Tasker , Jonathan C. Tan

We demonstrate that single and binary star clusters can be formed during cloud-cloud collisions triggered by the tidal interaction between the Large and Small Magellanic clouds. We run two different sets of self-consistent numerical…

天体物理学 · 物理学 2009-11-10 Kenji Bekki , Michael A. Beasley , Duncan A. Forbes , Warrick J. Couch

Due to their close proximity, the Large and Small Magellanic Clouds (SMC/LMC) provide natural laboratories for understanding how galaxies form and evolve. With the goal of determining the structure and dynamical state of the SMC, we present…

星系天体物理 · 物理学 2020-05-06 Michele De Leo , Ricardo Carrera , Noelia E. D. Noel , Justin I. Read , Denis Erkal , Carme Gallart

Galactic star formation scaling relations show increased scatter from kpc to sub-kpc scales. Investigating this scatter may hold important clues to how the star formation process evolves in time and space. Here, we combine different…

星系天体物理 · 物理学 2017-06-14 Bram B. Ochsendorf , Margaret Meixner , Julia Roman-Duval , Mubdi Rahman , Neal J. Evans

We present for the first time extended stellar density and/or surface brightness radial profiles for almost all the known Large Magellanic Cloud (LMC) old globular clusters (GCs). These were built from DECam images and reach out to ~ 4…

星系天体物理 · 物理学 2018-05-02 A. E. Piatti , A. D. Mackey

It has been recently shown from observational data sets the variation of structural parameters and internal dynamical evolution of star clusters in the Milky Way and in the Large Magellanic Cloud (LMC), caused by the different gravitational…

星系天体物理 · 物理学 2021-03-03 Andrés E. Piatti

We review the properties of turbulent molecular clouds (MCs), focusing on the physical processes that influence star formation (SF). MC formation appears to occur during large-scale compression of the diffuse ISM driven by supernovae,…

天体物理学 · 物理学 2007-05-23 J. Ballesteros-Paredes , R. S. Klessen , M. -M. Mac Low , E. Vazquez-Semadeni

The physical factors that influence the development of molecular cloud's density contrast are connected to those that affect star formation in the galaxy. For NGC 628 (M74), the proportion of high- and low-density contrast clouds initially…

星系天体物理 · 物理学 2025-01-31 J. W. Zhou , Sami Dib

Massive stars are key players in the evolution of galaxies, yet their formation pathway remains unclear. In this work, we use data from several galaxy-wide surveys to build an unbiased dataset of ~700 massive young stellar objects (MYSOs),…

星系天体物理 · 物理学 2016-11-23 B. B. Ochsendorf , M. Meixner , J. Chastenet , A. G. G. M. Tielens , J. Roman-Duval

We investigate the dynamical and chemical evolution of the Large Magellanic Cloud (LMC) interacting with the Galaxy and the Small Magellanic Cloud (SMC) based on a series of self-consistent chemodynamical simulations. Our numerical models…

天体物理学 · 物理学 2009-11-10 K. Bekki , M. Chiba

We investigate giant molecular cloud (GMCs) collisions and their ability to induce gravitational instability and thus star formation. This mechanism may be a major driver of star formation activity in galactic disks. We carry out a series…

星系天体物理 · 物理学 2017-02-01 Benjamin Wu , Jonathan C. Tan , Fumitaka Nakamura , Sven Van Loo , Duncan Christie , David Collins

We discuss how tidal interaction between the Large Magellanic Cloud (LMC), the Small Magellanic Cloud (SMC), and the Galaxy triggers galaxy-wide star formation in the Clouds for the last ~0.2 Gyr based on our chemodynamical simulations on…

天体物理学 · 物理学 2015-06-24 Kenji Bekki

The Magellanic Clouds offer unique opportunities to study star formation both on the global scales of an interacting system of gas-rich galaxies, as well as on the scales of individual star-forming clouds. The interstellar media of the…

天体物理学 · 物理学 2009-11-13 J. M. Oliveira

We investigate the formation of stars within giant molecular clouds (GMCs) evolving in environments of different global magnetic field strength and large-scale dynamics. Building upon a series of magnetohydrodynamic (MHD) simulations of…

星系天体物理 · 物理学 2020-03-25 Benjamin Wu , Jonathan C. Tan , Duncan Christie , Fumitaka Nakamura

The influence of rotation and magnetic fields on the physical properties of isothermal gas clouds is discussed. The presence of rotation and/or magnetic fields results in an increase of the critical cloud mass with respect to gravitational…

天体物理学 · 物理学 2009-11-07 B. Vollmer , W. J. Duschl
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