2018
DOI: 10.1051/0004-6361/201732416
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Surround and Squash: the impact of superbubbles on the interstellar medium in Scorpius–Centaurus OB2

Abstract: Context. Feedback by massive stars shapes the interstellar medium and is thought to influence subsequent star formation. Details of this process are under debate. Aims. We exploited observational constraints on stars, gas and nucleosynthesis ashes for the closest region of recent massive-star formation, Scorpius-Centaurus OB2, and combined them with 3D hydrodynamical simulations, in order to address physics and history for the case of the Scorpius-Centaurus superbubble. Methods. We used published cold gas obse… Show more

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Cited by 59 publications
(185 citation statements)
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References 80 publications
(110 reference statements)
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“…from Sco-Cen or regions along the spiral arm tangents (e.g. del Rio et al 1996;Diehl et al 2010;Krause et al 2018). We find indications that one of the most-nearby Sco-Cen 26 Al-filled superbubbles may have overrun the Solar System already and thus contribute an omnidirectional emission component (cf.…”
Section: Discussionmentioning
confidence: 50%
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“…from Sco-Cen or regions along the spiral arm tangents (e.g. del Rio et al 1996;Diehl et al 2010;Krause et al 2018). We find indications that one of the most-nearby Sco-Cen 26 Al-filled superbubbles may have overrun the Solar System already and thus contribute an omnidirectional emission component (cf.…”
Section: Discussionmentioning
confidence: 50%
“…We find indications that one of the most-nearby Sco-Cen 26 Al-filled superbubbles may have overrun the Solar System already and thus contribute an omnidirectional emission component (cf. Krause et al 2018). This characteristic seen in the observations, and its relative infrequency in simulated sky maps, suggests that the Milky Way may have a more coarse-grained superbubble structure than modelled in the simulation.…”
Section: Discussionmentioning
confidence: 99%
“…Radioactive nuclei with half-lives of the order of a few tens to a few hundreds Myr (short-lived radionuclides, SLRs hereafter) are one of the most promising tools to investigate a variety of current astrophysical topics including ongoing stellar nucleosynthesis (Diehl 2018), the properties of different rapid neutron-capture (r) process sites (Hotokezaka et al 2015), the physics of the interstellar medium (ISM) (Krause et al 2018) and of the local bubble (Feige et al 2018), the formation of the Solar System (Lugaro et al 2018), and the thermo-mechanical evolution of protoplanets (Lichtenberg et al 2019). The peculiarity of radioactive nuclei is that they decay into a daughter nucleus with a characteristic timescale determined by their half-life.…”
Section: Introductionmentioning
confidence: 99%
“…These heterogeneities, coupled with the fact that radioactive nuclei decay, can result in large SLR abundance fluctuations in different parcels of gas within the Galaxy (Meyer & Clayton 2000;Wasserburg et al 2006). 3D hydrodynamical simulations have been used to follow the heterogeneous evolution of one or two selected SLRs, 26 Al (half-life = 0.72 Myr) and 60 Fe (2.62 Myr), in giant molecular clouds (Vasileiadis et al 2013), star forming regions (Krause et al 2018), and the ISM (Fujimoto et al 2018). While these studies have provided the first best attempts at the problem of heterogeneous evolution of SLRs, their results should be treated with caution because the stellar production of 26 Al and 60 Fe from massive stars winds and core-collapse supernovae, one of the main inputs in these simulations, is still extremely uncertain (see, e.g.…”
Section: Introductionmentioning
confidence: 99%
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