Rigidly rotating, incompressible spheroid-ring systems: new bifurcations, critical rotations and degenerate states
| hal.structure.identifier | ECLIPSE 2019 | |
| dc.contributor.author | BOUTIN-BASILLAIS, B. | |
| hal.structure.identifier | ECLIPSE 2019 | |
| dc.contributor.author | HURÉ, J.-M. | |
| dc.date.issued | 2019-06-19 | |
| dc.identifier.issn | 0035-8711 | |
| dc.description.abstractEn | The equilibrium of incompressible spheroid-ring systems in rigid rotation is investigated by numerical means for a unity density contrast. A great diversity of binary configurations is obtained, with no limit neither in the mass ratio, nor in the orbital separation. We found only detached binaries, meaning that the end-point of the ɛ2-sequence is the single binary state in strict contact, easily prone to mass-exchange. The solutions show a remarkable confinement in the rotation frequency-angular momentum diagram, with a total absence of equilibrium for Ω2/πGρ ≳ 0.21. A short band of degeneracy is present next to the one-ring sequence. We unveil a continuum of bifurcations all along the ascending side of the Maclaurin sequence for eccentricities of the ellipsoid less than ≈0.612 and which involves a gradually expanding, initially massless loop. | |
| dc.language.iso | en | |
| dc.publisher | Oxford University Press (OUP): Policy P - Oxford Open Option A | |
| dc.subject.en | Methods: numerical | |
| dc.subject.en | Gravitation | |
| dc.subject.en | stars: interiors | |
| dc.subject.en | stars: rotation | |
| dc.subject.en | Methods: analytical | |
| dc.title.en | Rigidly rotating, incompressible spheroid-ring systems: new bifurcations, critical rotations and degenerate states | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1093/mnras/stz1615 | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP] | |
| bordeaux.journal | Monthly Notices of the Royal Astronomical Society | |
| bordeaux.page | 4504-4509 | |
| bordeaux.volume | 487 | |
| bordeaux.issue | 4 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02165831 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02165831v1 | |
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