Results 271 to 280 of about 3,407 (289)

Clump formation through colliding stellar winds in the Galactic Centre

Monthly Notices of the Royal Astronomical Society, 2016
The gas cloud G2 is currently being tidally disrupted by the Galactic Centre supermassive black hole, Sgr A*. The region around the black hole is populated by similar to 30 Wolf-Rayet stars, which produce strong outflows.
Diego Calderon, Jorge Cuadra, M Schartmann   +2 more
exaly   +2 more sources

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Gone with the Galactic wind

Nature Astronomy, 2020
A Galactic wind blowing from the Milky Way nucleus has swept up a few hundred clouds of atomic gas. New observations reveal dense molecular cores in two of these clouds, indicating a high loss rate of interstellar gas from the Galactic centre.
openaire   +1 more source

Accretion of Stellar Winds in the Galactic Centre

2007
We report a 3-dimensional numerical study of the accretion of stellar winds onto Sgr A*, the super-massive black hole at the centre of our Galaxy. Compared with previous investigations, we allow the stars to be on realistic orbits, include the recently discovered slow wind sources, and allow for optically thin radiative cooling.
Cuadra, J, Nayakshin, S, Springel, V, Di Matteo T   +3 more
openaire   +4 more sources

Stellar and Galactic Winds

Physica Scripta, 1984
The mass loss phenomenon in hot luminous stars is discussed and models for the structure of the wind, two component models and shock models are described. The constraints on models by X-ray observations are analysed. Hot stars return considerable amounts of matter and energy to the interstellar medium; the importance of this flow of energy and matter ...
openaire   +1 more source

Star formation in a galactic wind

Nature, 1980
Malin and Carter1 have discovered giant shells of faint optical emission around several normal elliptical galaxies. We suggest here that these shells are composed of stars formed in shocked galactic wind material. Shocks might arise from relatively gradual increases in wind velocity, or from the collision of the wind with a tenuous intergalactic medium,
A. C. Fabian, P. E. J. Nulsen, G. C. Stewart   +2 more
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Galactic Winds in Ellipticals: Consequences for Galactic and Intergalactic Enrichment

1988
Models of chemical evolution of elliptical galaxies, where galactic winds powered by SN explosions (of type I and II), as well as detailed nucleosynthesis prescriptions for single elements, are taken into account, predict the following results: i) There are different mass-metallicity relations for different heavy elements (O, Mg, Si and Fe), the
F. Matteucci, A. Tornambè, P. Vettolani
openaire   +1 more source

Galactic wind

Chinese Astronomy, 1979
null Li Xiao-qing, null Peng Qiu-he, null Huang Ke-liang, null Huang Jie-hao   +3 more
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The solution topology of galactic winds

Astrophysics and Space Science, 1994
The system of ordinary differential equations derived from the hydrodynamical equations of a radially symmetric flow has a one dimensional manifold of critical points if there is mass loading in the flow or if the heating and cooling rates are taken to be independent of the thermodynamic variables as is usual.
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Metal enrichment and energetics of galactic winds in galaxy clusters

Advances in Space Research, 2005
Sabine Schindler, Eelco van Kampen, S Kimeswenger   +2 more
exaly  

Particle Acceleration in Galactic Winds

2006
Galactic winds are driven by pressure gradients of the thermal gas, the energetic particles and the magnetic waves. In the case of time-dependent inner boundary conditions (e.g. super bubbles, star burst regions) shock waves are generated within the wind thereby also re-accelerating the cosmic rays and modifying the flow structure.
openaire   +1 more source