XMM-Newton observations of the superbubble in N 158 in the LMC
Sasaki M, Breitschwerdt D, Baumgartner V, Haberl F (2011)
Publication Status: Published
Publication Type: Journal article
Publication year: 2011
Journal
Publisher: EDP SCIENCES S A
Book Volume: 528
DOI: 10.1051/0004-6361/201015866
Abstract
Aims: We study the diffuse X-ray
emission observed in the field of view of the pulsar B 0540-69 in the
Large Magellanic Cloud (LMC) by XMM-Newton. We wish to understand the
nature of this soft diffuse emission, which coincides with the
superbubble in the H ii region N 158, and improve our understanding of
the evolution of superbubbles.
Methods: We analyse the XMM-Newton
spectra of the diffuse emission. Using the parameters obtained from the
spectral fit, we perform calculations of the evolution of the
superbubble. The mass loss and energy input rates are based on the
initial mass function (IMF) of the observed OB association inside the
superbubble.
Results: The analysis of the spectra shows that the
soft X-ray emission arises from hot shocked gas surrounded by a thin
shell of cooler, ionised gas. We show that the stellar winds alone
cannot account for the energy inside the superbubble, but the energy
release of 2-3 supernova explosions in the past ~1 Myr provides a
possible explanation.
Conclusions: The combination of high
sensitivity X-ray data, which permits a spectral analysis, and
analytical models for superbubbles can provide insight into the
evolutionary state of interstellar bubbles, if the stellar content is
known.
Authors with CRIS profile
Involved external institutions
Technische Universität Berlin
Germany (DE)
Universität Wien / University of Vienna
Austria (AT)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
Germany (DE)
Universität Wien / University of Vienna
Austria (AT)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
How to cite
APA:
Sasaki, M., Breitschwerdt, D., Baumgartner, V., & Haberl, F. (2011). XMM-Newton observations of the superbubble in N 158 in the LMC. Astronomy & Astrophysics, 528. https://doi.org/10.1051/0004-6361/201015866
MLA:
Sasaki, Manami, et al. "XMM-Newton observations of the superbubble in N 158 in the LMC." Astronomy & Astrophysics 528 (2011).
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