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相关论文: Stellar feedback by radiation pressure and photoio…

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Although the ultraluminous infrared radio galaxy 4C12.50 at z=0.12 is a promising candidate to reveal how radio induced feedback may regulate star formation in galaxies, we find no solid evidence for current or past impact of this mechanism…

Stars form in dense cores within molecular clouds and newly formed stars influence their natal environments. How stellar feedback impacts core properties and evolution is subject to extensive investigation. We performed a hierarchical…

星系天体物理 · 物理学 2024-10-23 K. R. Neralwar , D. Colombo , S. Offner , F. Wyrowski , K. M. Menten , A. Karska , M Y. Grudić , S. Neupane

We investigate the upper stellar mass limit set by radiative feedback by the forming star with various accretion rates and metallicities. To this end, we numerically solve the structures of both a protostar and its surrounding accretion…

太阳与恒星天体物理 · 物理学 2017-12-06 Hajime Fukushima , Kazuyuki Omukai , Takashi Hosokawa

We study star cluster formation in various environments with different metallicities and column densities by performing a suite of three-dimensional radiation hydrodynamics simulations. We find that the photoionization feedback from massive…

Energetic winds and radiation from massive star clusters push the surrounding gas and blow superbubbles in the interstellar medium (ISM). Using 1-D hydrodynamic simulations, we study the role of radiation in the dynamics of superbubbles…

星系天体物理 · 物理学 2016-08-17 Siddhartha Gupta , Biman B. Nath , Prateek Sharma , Yuri Shchekinov

We investigate the spatially-resolved star formation relation using a galactic disk formed in a comprehensive high-resolution (3.8 pc) simulation. Our new implementation of stellar feedback includes ionizing radiation as well as supernova…

星系天体物理 · 物理学 2018-03-12 Ji-hoon Kim , Mark R. Krumholz , John H. Wise , Matthew J. Turk , Nathan J. Goldbaum , Tom Abel

We investigate the effects of magnetic fields and radiative protostellar feedback on the star formation process using self-gravitating radiation magnetohydrodynamical calculations. We present results from a series of calculations of the…

太阳与恒星天体物理 · 物理学 2015-05-13 Daniel J. Price , Matthew R. Bate

We implement an optically thin approximation for the effects of the local radiation field from stars and hot gas on the gas heating and cooling in the N-body SPH code GASOLINE2. We resimulate three galaxies from the NIHAO project: one…

The role of radiation pressure in shaping exoplanet photoevaporation remains a topic of contention. Radiation pressure from the exoplanet's host star has been proposed as a mechanism to drive the escaping atmosphere into a "cometary" tail…

地球与行星天体物理 · 物理学 2020-02-12 Alex Debrecht , Jonathan Carroll-Nellenback , Adam Frank , Eric G. Blackman , Luca Fossati , John McCann , Ruth Murray-Clay

We examine the star formation history and stellar feedback effects of dwarf galaxies under the influence of extragalactic ultraviolet radiation. We consider the dynamical evolution of gas in dwarf galaxies using a one-dimensional,…

天体物理学 · 物理学 2009-11-10 Shawfeng Dong , D. N. C. Lin , S. D. Murray

To facilitate the study of black hole fueling, star formation, and feedback in galaxies, we outline a method for treating the radial forces on interstellar gas due to absorption of photons by dust grains. The method gives the correct…

星系天体物理 · 物理学 2015-06-04 G. S. Novak , J. P. Ostriker , L. Ciotti

We introduce the RIGEL model, a novel framework to self-consistently model the effects of stellar feedback in the multiphase ISM of dwarf galaxies with radiative transfer (RT) on a star-by-star basis. The RIGEL model integrates detailed…

星系天体物理 · 物理学 2024-11-13 Yunwei Deng , Hui Li , Boyuan Liu , Rahul Kannan , Aaron Smith , Greg L. Bryan

Energy and momentum feedback from stars is a key element of models for galaxy formation and interstellar medium dynamics, but resolving the relevant length scales to directly include this feedback remain out of reach of current-generation…

We present a new set of analytic models for the expansion of HII regions powered by UV photoionisation from massive stars and compare them to a new suite of radiative magnetohydrodynamic simulations of turbulent, self-gravitating molecular…

星系天体物理 · 物理学 2016-06-08 Sam Geen , Patrick Hennebelle , Pascal Tremblin , Joakim Rosdahl

The formation of stars from gas drives the evolution of galaxies. Yet, it remains one of the hardest processes to understand when trying to connect observations of stellar and galaxy populations to models of large scale structure formation.…

星系天体物理 · 物理学 2015-06-11 Mordecai-Mark Mac Low

In this study, we investigate the impact of local stellar radiation in cosmological zoom simulations of the formation of Milky Way-sized galaxies. We include the radiation field as an additional feedback component that is computed alongside…

星系天体物理 · 物理学 2024-09-05 Bocheng Zhu , Volker Springel

Reionisation in the early Universe is likely driven by dwarf galaxies. Using cosmological radiation-hydrodynamic simulations, we study star formation and the escape of Lyman continuum (LyC) photons from mini-haloes with $M_{\rm halo} \le…

星系天体物理 · 物理学 2017-01-18 Taysun Kimm , Harley Katz , Martin Haehnelt , Joakim Rosdahl , Julien Devriendt , Adrianne Slyz

We extend our previous SPH parameter study of the effects of photoionization from O-stars on star-forming clouds to include initially unbound clouds. We generate a set of model clouds in the mass range $10^{4}-10^{6}$M$_{\odot}$ with…

星系天体物理 · 物理学 2015-06-12 J. E. Dale , B. Ercolano , I. A. Bonnell

Line ratios in "fir" triplets of helium-like ions have proven to be a powerful diagnostic of conditions in X-ray emitting gas surrounding massive stars. Recent observations indicate that these ratios can be variable with time. The possible…

太阳与恒星天体物理 · 物理学 2015-06-04 K. T. Hole , R. Ignace

Radiative feedback is among the most important consequences of clustered star formation inside molecular clouds. At the onset of star formation, radiation from massive stars heats the surrounding gas, which suppresses the formation of many…

星系天体物理 · 物理学 2015-06-03 Mikhail Klassen , Ralph E. Pudritz , Thomas Peters