Evolution of the X-ray luminosity and metallicity of starburst blown superbubbles

Sergey A. Silich; Guillermo Tenorio-Tagle; Roberto Terlevich; Elena Terlevich; Hagai Netzer

doi:10.1046/j.1365-8711.2001.04288.x

Evolution of the X-ray luminosity and metallicity of starburst blown superbubbles

Sergey A. Silich^*, Guillermo Tenorio-Tagle, Roberto Terlevich, Elena Terlevich, Hagai Netzer

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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Abstract

We have modelled the evolution of hot superbubbles in starbursts, taking into account the rapid changes in the chemical composition of the interior of the superbubbles resulting from the large stellar mass loss, i.e. stellar winds from massive young stars and type II supernovae. We have followed in detail the time-dependent production and mixing of oxygen and iron in the interior of the hot superbubbles and showed that while the oxygen abundance rapidly climbs to over solar values in less than 10 Myr, iron abundance remains always under solar. This highly enhanced oxygen metallicity boosts the early X-ray luminosity of superbubbles while keeping the iron abundance subsolar. This brings theory and X-ray observations of the luminosity and metal content of young starbursts closer together.

Original language	English
Pages (from-to)	191-200
Number of pages	10
Journal	Monthly Notices of the Royal Astronomical Society
Volume	324
Issue number	1
DOIs	https://doi.org/10.1046/j.1365-8711.2001.04288.x
State	Published - 11 Jun 2001

Keywords

Galaxies: starburst
Hydrodynamics
ISM: abundances
ISM: bubbles
X-rays: bursts

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10.1046/j.1365-8711.2001.04288.x

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abstract = "We have modelled the evolution of hot superbubbles in starbursts, taking into account the rapid changes in the chemical composition of the interior of the superbubbles resulting from the large stellar mass loss, i.e. stellar winds from massive young stars and type II supernovae. We have followed in detail the time-dependent production and mixing of oxygen and iron in the interior of the hot superbubbles and showed that while the oxygen abundance rapidly climbs to over solar values in less than 10 Myr, iron abundance remains always under solar. This highly enhanced oxygen metallicity boosts the early X-ray luminosity of superbubbles while keeping the iron abundance subsolar. This brings theory and X-ray observations of the luminosity and metal content of young starbursts closer together.",

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AU - Netzer, Hagai

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KW - Hydrodynamics

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KW - X-rays: bursts

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Evolution of the X-ray luminosity and metallicity of starburst blown superbubbles

Abstract

Keywords

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