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Related papers: Large-scale effects of ionizing feedback

200 papers

The EUV photoionizing radiation and FUV dissociating radiation from newly born stars photoevaporate their parental neutral cloud, leading to the formation of dense clumps that could eventually form additional stars. We study the effects of…

Solar and Stellar Astrophysics · Physics 2013-06-24 V. Lora , M. J. Vasconcelos , A. C. Raga , A. Esquivel , A. H. Cerqueira

We carry out a new suite of cosmological radiation hydrodynamic simulations and explore the relative impacts on reionization-epoch star formation of galactic outflows and photoionization heating. By itself, an extragalactic ultraviolet…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 K. Finlator , R. Davé , F. Özel

One of the outstanding puzzles about star formation is why it proceeds so slowly. Giant molecular clouds convert only a few percent of their gas into stars per free-fall time, and recent observations show that this low star formation rate…

Astrophysics · Physics 2015-06-24 Mark R. Krumholz

Massive stars influence their parental molecular cloud, and it has long been suspected that the development of hydrodynamical instabilities can compress or fragment the cloud. Identifying such instabilities has proved difficult. It has been…

Astrophysics of Galaxies · Physics 2010-11-02 Olivier Berné , Núria Marcelino , José Cernicharo

Star formation triggering mechanisms are reviewed, including the direct compression of clouds and globules, the compression and collapse of molecular clouds at the edges of HII regions and supernovae, the expansion and collapse of giant…

Astrophysics · Physics 2007-05-23 B. G. Elmegreen

Mechanical feedback from massive stars, primarily from supernovae, can dominate ISM structuring and phase balance, thereby profoundly affecting galactic evolutionary processes. Our understanding of mechanical feedback is based on the…

Astrophysics · Physics 2008-11-26 M. S. Oey

The first sources of ionizing radiation to condense out of the dark and neutral IGM sent ionization fronts sweeping outward through their surroundings, overtaking other condensed objects and photoevaporating them. This feedback effect of…

Astrophysics · Physics 2007-05-23 Paul R. Shapiro , Alejandro C. Raga

Observations indicate that most massive stars in the Galaxy appear in groups, called OB associations, where their strong wind activity generates large structures known as superbubbles, inside which the subsequent supernovae (SNe) explode,…

Astrophysics · Physics 2009-11-10 E. Parizot , A. Marcowith , E. van der Swaluw , A. M. Bykov , V. Tatischeff

Massive stars disproportionately influence their surroundings. How they form has only started to become clear recently through radiation gas dynamical simulations. However, until now, no simulation has simultaneously included both magnetic…

Solar and Stellar Astrophysics · Physics 2015-03-17 Thomas Peters , Robi Banerjee , Ralf S. Klessen , Mordecai-Mark Mac Low

We present 3D radiation-gasdynamical simulations of an ionization front running into a dense clump. In our setup, a B0 star irradiates an overdensity which is at a distance of 10 pc and modelled as a supercritical 100 M_sol Bonnor-Ebert…

Astrophysics · Physics 2008-12-17 Thomas Peters , Robi Banerjee , Ralf S. Klessen

The interplay between the ISM and the massive stars formed in clusters and, more generally, in recent events of star formation is reviewed via the global effects each has on the other. The pre-existing environment affects the properties of…

Astrophysics · Physics 2007-05-23 D. Calzetti , C. A. Tremonti , T. M. Heckman , C. Leitherer

Feedback-driven winds from star formation or active galactic nuclei might be a relevant channel for the abrupt quenching star formation in massive galaxies. However, both observations and simulations support the idea that these processes…

We propose that bound, young massive stellar clusters form from dense clouds that have escape speeds greater than the sound speed in photo-ionized gas. In these clumps, radiative feedback in the form of gas ionization is bottled up,…

Astrophysics of Galaxies · Physics 2015-06-11 Eli Bressert , Adam Ginsburg , Cara Battersby , John Bally , Steven Longmore , Leonardo Testi

Feedback from massive stars shapes the ISM and affects the evolution of galaxies, but its mechanisms acting at the small scales ($\sim 10$ pc) are still not well constrained observationally, especially in the low-metallicity environments.…

Astrophysics of Galaxies · Physics 2022-10-25 Ivan S. Gerasimov , Oleg V. Egorov , Tatiana A. Lozinskaya , Alexei V. Moiseev , Dmitry V. Oparin

I argue that star formation is controlled by supersonic turbulence, drawing for support on a number of 3D hydrodynamical and MHD simulations as well as theoretical arguments. Clustered star formation appears to be a natural result of a lack…

Astrophysics · Physics 2007-05-23 Mordecai-Mark Mac Low

It is widely accepted that stars do not form in isolation but result from the fragmentation of molecular clouds, which in turn leads to star cluster formation. Over time, clusters dissolve or are destroyed by interactions with molecular…

We present self-consistent radiation hydrodynamic simulations of hydrogen reionization performed with Arepo-RT complemented by a state-of-the-art galaxy formation model. We examine how photoheating feedback, due to reionization, shapes the…

Astrophysics of Galaxies · Physics 2019-06-25 Xiaohan Wu , Rahul Kannan , Federico Marinacci , Mark Vogelsberger , Lars Hernquist

Feedback in massive galaxies generally involves quenching of star formation, a favored candidate being outflows from a central supermassive black hole. At high redshifts however, explanation of the huge rates of star formation often found…

Astrophysics of Galaxies · Physics 2016-01-27 Rebekka Bieri , Yohan Dubois , Joseph Silk , Gary A. Mamon

Stellar feedback in the form of radiation pressure and magnetically-driven collimated outflows may limit the maximum mass that a star can achieve and affect the star-formation efficiency of massive pre-stellar cores. Here we present a…

Solar and Stellar Astrophysics · Physics 2020-07-29 Anna L. Rosen , Mark R. Krumholz

Massive stars have a profound influence on the Universe, but their formation remains poorly understood. We review the current status of observational and theoretical research in this field, describing the various stages of an evolutionary…

Astrophysics · Physics 2007-05-23 H. Beuther , E. B. Churchwell , C. F. McKee , J. C. Tan