E-BOSS: An Extensive stellar BOw Shock Survey [PDF]
20 pages, 11 figures, and 8 tables.
C. S. Peri, P. Benaglia, N. L. Isequilla
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Runaway O and Be Stars Found Using Gaia DR3, New Stellar Bow Shocks and Search for Binaries [PDF]
A relevant fraction of massive stars are runaways, moving with a significant peculiar velocity with respect to their environment. Kicks from supernova explosions or the dynamical ejection of stars from clusters can account for the runaway genesis. We have used Gaia DR3 data to study the velocity distribution of massive O and Be stars from the GOSC and ...
M. Carretero-Castrillo +3 more
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Ks- andLp-band polarimetry on stellar and bow-shock sources in the Galactic center [PDF]
Infrared observations of the Galactic center (GC) provide a unique opportunity to study stellar and bow-shock polarization effects in a dusty environment. The goals of this work are to present new Ks- and Lp-band polarimetry on an unprecedented number of sources in the central parsec of the GC, thereby expanding our previous results in the H- and Ks ...
R. M. Buchholz +3 more
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Polarization simulations of stellar wind bow shock nebulae – II. The case of dust scattering [PDF]
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 +4 more
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Modeling nonthermal emission from stellar bow shocks (Research Note) [PDF]
Context. Runaway O- and early B-type stars passing through the interstellar medium at supersonic velocities and characterized by strong stellar winds may produce bow shocks that can serve as particle acceleration sites. Previous theoretical models predict the production of high-energy photons by nonthermal radiative processes, but their efficiency is ...
V. Pereira +4 more
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THE MYSTERIOUS SICKLE OBJECT IN THE CARINA NEBULA: A STELLAR WIND INDUCED BOW SHOCK GRAZING A CLUMP? [PDF]
Optical and near-infrared images of the Carina Nebula show a peculiar arc-shaped feature, which we call the "Sickle", next to the B-type star Trumpler 14 MJ 218. We use multi-wavelength observations to explore and constrain the nature and origin of the nebulosity. Using sub-mm data from APEX/LABOCA as well as Herschel far-infrared maps, we discovered a
J. Ngoumou +3 more
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Thermal emission from bow shocks. III. Variable diffuse X-ray emission from stellar-wind bow shocks driven by dynamical instabilities [PDF]
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 +7 more
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H2O masers in a jet-driven bow shock: episodic ejection from a massive young stellar object [PDF]
We report the results of VERA multi-epoch VLBI 22 GHz water maser observations of S255IR-SMA1, a massive young stellar object located in the S255 star forming region. By annual parallax the source distance was measured as D = 1.78 +-0.12 kpc and the source systemic motion was (u alpha cos d, u d) = (-0.13 +- 0.20, -0.06 +- 0.27) mas yr-1. Masers appear
Ross A. Burns +4 more
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Interstellar Bow Shocks around Fast Stars Passing through the Local Interstellar Medium
Bow shocks are produced in the local interstellar medium by the passage of fast stars from the Galactic thin-disk and thick-disk populations with velocities V _* = 40–80 km s ^−1 .
J. Michael Shull, S. R. Kulkarni
doaj +1 more source
Jet Bow Shocks and Clumpy Shells of H2 Emission in the Young Stellar Outflow Cepheus A
Patrick Hartigan +2 more
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