Results 11 to 20 of about 412,900 (233)

New stellar bow shocks and bubbles found around runaway stars [PDF]

Astronomy & Astrophysics
Context. Runaway stars with peculiar high velocities can generate stellar bow shocks. Only a few bow shocks show clear radio emission. Aims. Our goal is to identify and characterize new stellar bow shocks around O and Be runaway stars in the infrared (IR), as well as to study their possible radio emission and nature. Methods.
M. Carretero-Castrillo, P. Benaglia, J. M. Paredes, M. Ribó   +3 more
core   +6 more sources

Energetics of nearby stellar bow shocks [PDF]

, 2012
Fil: Benaglia, Paula. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina. Universidad Nacional de La Plata.
Benaglia, Paula
core   +5 more sources

Polarization Signatures of Bow Shocks in Stellar Winds

EAS Publications Series, 2015
Bow shocks around massive stars provide important information regarding the motion of the star, the stellar wind properties, and the density of the surrounding interstellar medium. We use a Monte Carlo radiative transfer code to investigate the polarization created when photons from a central star scatter from electrons or dust grains in a surrounding ...
M. Shrestha, J.L. Hoffman
openaire   +2 more sources

Extended red objects and stellar-wind bow shocks in the Carina Nebula [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
We report the results of infrared photometry on 39 extended red objects (EROs) in the Carina Nebula, observed with the Spitzer Space Telescope. Most EROs are identified by bright, extended 8.0 um emission, which ranges from 10'' to 40'' in size, but our sample also includes 4 EROs identified by extended 24 um emission.
Sexton, Remington O., Povich, Matthew S., Smith, Nathan, Babler, Brian L., Meade, Marilyn R., Rudolph, Alexander L.   +5 more
openaire   +3 more sources

Thermal emission from bow shocks

Astronomy & Astrophysics
Context. X-ray emission from wind-driven bow shocks is both difficult to measure and predict, but may give important insights into the energy budget of the hot phase of the interstellar medium (ISM) by quantifying mixing at the interface between hot and warm gas phases. Aims.
Jonathan Mackey, Arun Mathew, Ahmad A. Ali, Thomas J. Haworth, Robert Brose, Sam Green, Maria Moutzouri, Stefanie Walch   +7 more
openaire   +3 more sources

Polarization simulations of stellar wind bow shock nebulae – II. The case of dust scattering [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We study the polarization produced by scattering from dust in a bow shock-shaped region of enhanced density surrounding a stellar source, using the Monte Carlo radiative transfer code SLIP. Bow shocks are structures formed by the interaction of the winds of fast-moving stars with the interstellar medium.
Manisha Shrestha, Hilding R Neilson, Jennifer L Hoffman, Richard Ignace, Andrew G Fullard   +4 more
openaire   +3 more sources

Planetary Evaporation and the Dynamics of Planet Wind/Stellar Wind Bow Shocks [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractWe present initial results of a new campaign of simulations focusing on the interaction of planetary winds with stellar environments using Adaptive Mesh Refinement methods. We have confirmed the results of Stone & Proga (2009) that an azimuthal flow structure is created in the planetary wind due to day/night temperatures differences.
Frank, A., Liu, B., Carroll-Nellenback, J., Quillen, A. C., Kasting, J. F., Dobbs-Dixon, I., Blackman, E. G.   +6 more
openaire   +2 more sources

Properties of mass-loading shocks: 1. Hydrodynamic considerations [PDF]

, 1991
The one-dimensional hydrodynamics of flows subjected to mass loading are considered anew, with particular emphasis placed on determining the properties of mass-loading shocks. This work has been motivated by recent observations of the outbound Halley bow
G. P. Zank, Oughton, Sean, S. Oughton, Zank, Gary P.   +3 more
core   +1 more source

Properties of mass-loading shocks, 2. Magnetohydrodynamics [PDF]

, 1992
The one-dimensional magnetohydrodynamics of shocked flows subjected to significant mass loading are considered. Recent observations at comets Giacobini-Zinner and Halley suggest that simple nonreacting MHD is an inappropriate description for active ...
Oughton, Sean, Neubauer, F. M., Zank, Gary P., Webb, G. M.   +3 more
core   +1 more source

X-ray study of bow shocks in runaway stars [PDF]

, 2017
peer reviewedMassive runaway stars produce bow shocks through the interaction of their winds with the interstellar medium, with the prospect for particle acceleration by the shocks. These objects are consequently candidates for non-thermal emission.
De Becker, M., P. Benaglia, Romero, G. E., del Valle, Maria Victoria, Peri, Cintia Soledad, Benaglia, Paula, M. De Becker, G. E. Romero, Peri, C. S., C. S. Peri, Valle, M. V. del, De Becker, Michaël, Benaglia, P., Peri, C.S., M. V. del Valle, del Valle, M.V., Romero, G.E., Romero, Gustavo Esteban   +17 more
core   +1 more source