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Observations show that high-velocity jets stem from deeply embedded young stars, which may still be experiencing infall from their parent cloud cores. Yet theory predicts that, early in this buildup, any outgoing wind is trapped by incoming…

Astrophysics · Physics 2009-11-07 Francis P. Wilkin , Steven W. Stahler

Outflows from starburst galaxies can be driven by thermal pressure, radiation and cosmic rays. We present an analytic phenomenological model that accounts for these contributions simultaneously to investigate their effects on the…

Astrophysics of Galaxies · Physics 2020-01-29 B. P. Brian Yu , Ellis R. Owen , Kinwah Wu , Ignacio Ferreras

Photospheric radiation momentum is efficiently transferred by absorption through metal lines to the gaseous matter in the atmospheres of massive stars, sustaining strong winds and mass loss rates. Not only is this critical for the evolution…

Astrophysics · Physics 2007-05-23 Fabio Bresolin , Rolf-Peter Kudritzki

In an attempt to understand the extraordinarily small mass-loss rates of late-type O dwarfs, mass fluxes in the relevant part of (T_{eff}, g)-space are derived from first principles using a previously-described code for constructing moving…

Solar and Stellar Astrophysics · Physics 2015-05-14 L. B. Lucy

Hot Jupiters can experience mass loss driven by heating from UV radiation from their host stars, and this flow is often controlled by magnetic fields. More specifically, near the planetry surface, the magnetic pressure dominates the ram…

Earth and Planetary Astrophysics · Physics 2014-09-24 Fred C. Adams , James E. Owen

Stellar winds are a major source of uncertainty in understanding the life and deaths of massive stars. Across studies in the field, prescriptions for stellar winds differ substantially in both their physical assumptions and implementation,…

Solar and Stellar Astrophysics · Physics 2026-01-06 Amedeo Romagnolo , Floor S. Broekgaarden , Konstantinos Antoniadis , Alex C. Gormaz-Matamala

We present a versatile family of model galactic outflows including non-uniform mass and energy source distributions, a gravitational potential from an extended mass source, and radiative losses. The model easily produces steady-state wind…

Astrophysics of Galaxies · Physics 2016-03-16 Chad Bustard , Ellen G. Zweibel , Elena D'Onghia

Core-Collapse supernovae arise from stars greater than 8 $\msun$. These stars lose a considerable amount of mass during their lifetime, which accumulates around the star forming wind-blown bubbles. Upon the death of the star in a…

Astrophysics · Physics 2008-11-26 Vikram V. Dwarkadas

Fast line-driven stellar winds play an important role in the evolution of planetary nebulae. We provide global hot star wind models of central stars of planetary nebulae. The models predict wind structure including the mass-loss rates,…

Solar and Stellar Astrophysics · Physics 2020-04-08 J. Krticka , J. Kubat , I. Krtickova

The interaction of a stellar or disk wind with a collapsing environment holds promise for explaining a variety of outflow phenomena observed around young stars. In this paper we present the first simulations of these interactions. The focus…

Astrophysics · Physics 2009-10-31 G. Delamarter , A. Frank , L. Hartmann

Mass loss rates for the tenuous, hot winds of cool stars are extremely difficult to measure, yet they are a crucial ingredient in the stars' rotational evolution. We present a new method for measuring these mass loss rates in young,…

Solar and Stellar Astrophysics · Physics 2018-11-06 Moira Jardine , Andrew Collier Cameron

Stellar winds are an important aspect of our understanding of the evolution of massive stars and their input into the interstellar medium. Here we present solutions for the velocity field and mass-loss rates for stellar outflows as well as…

Astrophysics · Physics 2008-12-10 Patrick E. Müller , Jorick S. Vink

Galactic winds and mass outflows are observed both in nearby starburst galaxies and in high-redshift star-forming galaxies. In this paper we develop a simple analytic model to understand the observed superwind phenomenon. Our model is built…

Astrophysics · Physics 2014-10-13 Chenggang Shu , H. J. Mo , Shude Mao

Galactic winds shape the stellar, gas, and metal content of galaxies. To quantify their impact, we must understand their physics. We review potential wind-driving mechanisms and observed wind properties, with a focus on the warm ionized and…

Astrophysics of Galaxies · Physics 2024-06-21 Todd A. Thompson , Timothy M. Heckman

Stellar evolution models of massive stars are very sensitive to the adopted mass-loss scheme. The magnitude and evolution of mass-loss rates significantly affect the main sequence evolution, and the properties of post-main sequence objects,…

Solar and Stellar Astrophysics · Physics 2017-02-01 Zsolt Keszthelyi , Joachim Puls , Gregg Wade

We present analytical solutions for winds from galaxies with NFW dark matter halo. We consider winds driven by energy and mass injection from multiple supernovae, as well as momentum injection due to radiation from a central black hole. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Mahavir Sharma , Biman B. Nath

Galactic outflows of low ionization, cool gas are ubiquitous in local starburst galaxies, and in the majority of galaxies at high redshift. How these cool outflows arise is still in question. Hot gas from supernovae has long been suspected…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Norman Murray , Brice Ménard , Todd A. Thompson

The stellar winds of massive stars show large changes in mass-loss rates and terminal velocities during their evolution from O-star through the Luminous Blue Variable phase to the Wolf-Rayet phase. The luminosity remains approximately…

Astrophysics · Physics 2009-11-07 H. J. G. L. M. Lamers , T. Nugis

Stars can produce steady-state winds through radiative driving as long as the mechanical luminosity of the wind does not exceed the radiative luminosity at its base. This upper bound on the mass loss rate is known as the photon-tiring…

Astrophysics · Physics 2009-11-13 Allard Jan van Marle , Stanley P. Owocki , Nir J. Shaviv

Winds arising from galaxies, star clusters, and active galactic nuclei are crucial players in star and galaxy formation, but it has proven remarkably difficult to use observations of them to determine physical properties of interest,…

Astrophysics of Galaxies · Physics 2017-08-30 Mark R. Krumholz , Todd A. Thompson , Eve C. Ostriker , Crystal L. Martin