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Related papers: Feedback Processes [in Massive Star Formation]: A …

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Dwarf galaxies pose significant challenges for cosmological models. In particular, current models predict a dark matter density that is divergent at the center, in sharp contrast with observations which indicate an approximately constant…

Astrophysics · Physics 2009-11-13 Sergey Mashchenko , James Wadsley , H. M. P. Couchman

Cloud environment is thought to play a critical role in determining the mechanism of formation of massive stars. In this contribution we review the physical characteristics of the environment around recently formed massive stars. Particular…

Astrophysics · Physics 2009-10-31 Guido Garay , Susana Lizano

Magnetic fields are considered to be key components of massive stars, with a far-reaching impact on their evolution and ultimate fate. A magnetic mechanism was suggested for the collimated explosion of massive stars, relevant for…

Solar and Stellar Astrophysics · Physics 2024-10-28 Swetlana Hubrig , Markus Schöller , Silva P. Järvinen , Aleksandar Cikota , Michael Abdul-Masih , Ana Escorza , Ilya Ilyin

Photo-heating associated with reionisation and kinetic feedback from core-collapse supernovae have previously been shown to suppress the high-redshift cosmic star formation rate. Here we investigate the interplay between photo-heating and…

Astrophysics · Physics 2009-09-03 Andreas H. Pawlik , Joop Schaye

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…

Astrophysics of Galaxies · Physics 2020-03-25 Benjamin Wu , Jonathan C. Tan , Duncan Christie , Fumitaka Nakamura

Super-massive black holes are fundamental ingredients in our theoretical understanding of galaxy formation. They are likely the only sources energetic enough to regulate star formation within massive dark matter halos, but observational…

Astrophysics of Galaxies · Physics 2019-11-06 Ignacio Martin-Navarro , Joseph N. Burchett , Mar Mezcua

Astrochemistry is a discipline that studies physico-chemical processes in astrophysical environments. Such environments are characterized by conditions that are substantially different from those existing in usual chemical laboratories.…

Solar and Stellar Astrophysics · Physics 2015-06-18 Michael De Becker

Feedback effects due to massive stars and supernovae in the first objects are shown to strongly regulate both galaxy formation/evolution and the reionization process. Here we review the most important ones in some detail. We discuss how…

Astrophysics · Physics 2007-05-23 A. Ferrara , B. Ciardi , S. Marri , P. Todini

AGN feedback from supermassive black holes (SMBHs) at the center of early type galaxies is commonly invoked as the explanation for the quenching of star formation in these systems. The situation is complicated by the significant amount of…

Astrophysics of Galaxies · Physics 2015-11-04 L. Ciotti , J. P. Ostriker , A. Negri , S. Pellegrini , S. Posacki , G. Novak

Rotation appears as a dominant effect in massive star evolution. It largely affects all the model outputs: inner structure, tracks, lifetimes, isochrones, surface compositions, blue to red supergiant ratios, etc. At lower metallicities, the…

Astrophysics · Physics 2007-05-23 André Maeder , Georges Meynet

We study how feedback influences baryon infall onto galaxies using cosmological, zoom-in simulations of haloes with present mass $M_{vir}=6.9\times10^{11} M_{\odot}$ to $1.7\times10^{12} M_{\odot}$. Starting at z=4 from identical initial…

Astrophysics of Galaxies · Physics 2015-06-19 Hannah Übler , Thorsten Naab , Ludwig Oser , Michael Aumer , Laura V. Sales , Simon D. M. White

We present a novel method for including the effects of early (pre-supernova) feedback in simulations of galaxy evolution. Rather than building a model which attempts to match idealized, small-scale simulations or analytic approximations, we…

Astrophysics of Galaxies · Physics 2022-06-29 Benjamin W. Keller , J. M. Diederik Kruijssen , Mélanie Chevance

The accumulation, compression and cooling of the ambient interstellar medium (ISM) in large-scale flows powered by OB cluster feedback can drive the production of dense molecular clouds. We review the current state of the field, with a…

Astrophysics of Galaxies · Physics 2013-04-10 J. R. Dawson

Context. Understanding the conditions in which stars and stellar clusters form is of great importance. In particular the role that stellar feedback may have is still hampered by large uncertainties. Aims. We investigate the role played by…

Astrophysics of Galaxies · Physics 2022-07-20 Antoine Verliat , Patrick Hennebelle , Marta González , Yueh-Ning Lee , Sam Geen

We simulate the effects of massive star feedback, via winds and SNe, on inhomogeneous molecular material left over from the formation of a massive stellar cluster. We use 3D hydrodynamic models with a temperature dependent average particle…

Astrophysics of Galaxies · Physics 2012-09-25 Julian Pittard , Hazel Rogers

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 review current understanding of star formation, outlining an overall theoretical framework and the observations that motivate it. A conception of star formation has emerged in which turbulence plays a dual role, both creating…

Astrophysics · Physics 2008-11-26 Christopher F. McKee , Eve C. Ostriker

Regulating the available gas mass inside galaxies proceeds through a delicate balance between inflows and outflows, but also through the internal depletion of gas due to star formation. At the same time, stellar feedback is the internal…

Astrophysics of Galaxies · Physics 2021-02-17 Michael Kretschmer , Romain Teyssier

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