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Article . 2017
Data sources: Datacite
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Article . 2017
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Monthly Notices of the Royal Astronomical Society
Article . 2017 . Peer-reviewed
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https://dx.doi.org/10.48550/ar...
Article . 2017
License: arXiv Non-Exclusive Distribution
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Hypervelocity runaways from the Large Magellanic Cloud

Authors: Boubert, D.; Erkal, D.; Evans, N. W.; Izzard, Robert;

Hypervelocity runaways from the Large Magellanic Cloud

Abstract

We explore the possibility that the observed population of Galactic hypervelocity stars (HVSs) originate as runaway stars from the Large Magellanic Cloud (LMC). Pairing a binary evolution code with an N-body simulation of the interaction of the LMC with the Milky Way, we predict the spatial distribution and kinematics of an LMC runaway population. We find that runaway stars from the LMC can contribute Galactic HVSs at a rate of 3 × 10¯⁶ yr‾¹. This is composed of stars at different points of stellar evolution, ranging from the main sequence to those at the tip of the asymptotic giant branch. We find that the known B-type HVSs have kinematics that are consistent with an LMC origin. There is an additional population of hypervelocity white dwarfs whose progenitors were massive runaway stars. Runaways that are even more massive will themselves go supernova, producing a remnant whose velocity will be modulated by a supernova kick. This latter scenario has some exotic consequences, such as pulsars and supernovae far from star-forming regions, and a small rate of microlensing from compact sources around the halo of the LMC.

Country
United Kingdom
Keywords

Astrophysics - Solar and Stellar Astrophysics, binaries: general, supernovae: general, Astrophysics of Galaxies (astro-ph.GA), stars: kinematics and dynamics, Magellanic Clouds, FOS: Physical sciences, Astrophysics - Astrophysics of Galaxies, 520, Solar and Stellar Astrophysics (astro-ph.SR)

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    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
59
Top 10%
Top 10%
Top 1%
Green
gold