The short-lived production of exozodiacal dust in the aftermath of a dynamical instability in planetary systems
| dc.contributor.author | BONSOR, Amy | |
| hal.structure.identifier | SSE 2013 | |
| dc.contributor.author | RAYMOND, Sean N. | |
| hal.structure.identifier | Institut de Planétologie et d'Astrophysique de Grenoble [IPAG] | |
| dc.contributor.author | AUGEREAU, Jean-Charles | |
| dc.date.created | 2013-06-03 | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 0035-8711 | |
| dc.description.abstractEn | Excess emission, associated with warm, dust belts, commonly known as exozodis, has been observed around a third of nearby stars. The high levels of dust required to explain the observations are not generally consistent with steady-state evolution. A common suggestion is that the dust results from the aftermath of a dynamical instability, an event akin to the Solar System's Late Heavy Bombardment. In this work, we use a database of N-body simulations to investigate the aftermath of dynamical instabilities between giant planets in systems with outer planetesimal belts. We find that, whilst there is a significant increase in the mass of material scattered into the inner regions of the planetary system following an instability, this is a short-lived effect. Using the maximum lifetime of this material, we determine that even if every star has a planetary system that goes unstable, there is a very low probability that we observe more than a maximum of 1% of sun-like stars in the aftermath of an instability, and that the fraction of planetary systems currently in the aftermath of an instability is more likely to be limited to <0.06. This probability increases marginally for younger or higher mass stars. We conclude that the production of warm dust in the aftermath of dynamical instabilities is too short-lived to be the dominant source of the abundantly observed exozodiacal dust. | |
| dc.language.iso | en | |
| dc.publisher | Oxford University Press (OUP): Policy P - Oxford Open Option A | |
| dc.title.en | The short-lived production of exozodiacal dust in the aftermath of a dynamical instability in planetary systems | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1093/mnras/stt933 | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] | |
| dc.identifier.arxiv | 1306.0592 | |
| bordeaux.journal | Monthly Notices of the Royal Astronomical Society | |
| bordeaux.page | 2938-2945 | |
| bordeaux.volume | 433 | |
| bordeaux.issue | 4 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00839429 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00839429v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Monthly%20Notices%20of%20the%20Royal%20Astronomical%20Society&rft.date=2013&rft.volume=433&rft.issue=4&rft.spage=2938-2945&rft.epage=2938-2945&rft.eissn=0035-8711&rft.issn=0035-8711&rft.au=BONSOR,%20Amy&RAYMOND,%20Sean%20N.&AUGEREAU,%20Jean-Charles&rft.genre=article |
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