Gravitationally-binding region around a star in a binary system
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This is a schematic of a semidetached binary system with the larger component filling its Roche lobe (black line).
In astronomy, the Roche lobe is the region around a star in a binary system within which orbiting material is gravitationally bound to that star. It is an approximately teardrop-shaped region bounded by a critical gravitational equipotential, with the apex of the teardrop pointing towards the other star (the apex is at the L1 Lagrangian point of the system).
The Roche lobe is different from the Roche sphere, which approximates the gravitational sphere of influence of one astronomical body in the face of perturbations from a more massive body around which it orbits. It is also different from the Roche limit, which is the distance at which an object held together only by gravity begins to break up due to tidal forces. The Roche lobe, Roche limit, and Roche sphere are named after the French astronomer Édouard Roche.
In astronomy, the Rochelobe is the region around a star in a binary system within which orbiting material is gravitationally bound to that star. It is...
In celestial mechanics, the Roche limit, also called Roche radius, is the distance from a celestial body within which a second celestial body, held together...
multi-driver loudspeakers Delta lobe or deltaic lobe, the projection of a river delta mouth into standing water Rochelobe, the region of space around a...
divided grossly into four parts or lobes: the right lobe, the left lobe, the caudate lobe, and the quadrate lobe. Seen from the front – the diaphragmatic...
transfer when it overfills its Rochelobe and as a consequence the orbit will shrink further causing it to overflow the Rochelobe even more, which accelerates...
the components fills the binary star's Rochelobe and the other does not. Gas from the surface of the Roche-lobe-filling component (donor) is transferred...
the Moon. In binary stars, the Rochelobe has its apex located at L1; if one of the stars expands past its Rochelobe, then it will lose matter to its...
in which one or both of the component stars has filled or exceeded its Rochelobe. When this happens, material from one star (the donor star) will flow...
shed its envelope onto its white dwarf companion when it overflows its Rochelobe. As a result, the white dwarf steadily captures matter from the companion's...
its Rochelobe. The secondary may also be a main sequence star, referred to as a detached binary or it may an evolved star filling its Rochelobe, referred...
whether the giant is a Mira variable or not. The red giant fills its Rochelobe so that matter is transferred to the white dwarf and accumulates until...
Exploration website. Interplanetary Transport Network n-body problem Rochelobe Sphere of influence (astrodynamics) Sphere of influence (black hole) At...
produced by the outer layers of a companion star that has overflowed its Rochelobe. The transfer of angular momentum from this accretion event can increase...
dwarf with a companion red giant. The cool giant star loses material via Rochelobe overflow or through its stellar wind, which flows onto the hot compact...
binary with the third longest known period. A red supergiant fills its Rochelobe when closest to a companion blue star, the latter appearing to be on the...
Gravitational binding energy Speed of gravity Newtonian limit Hill sphere RochelobeRoche limit Phase space Symplectic manifold Liouville's theorem (Hamiltonian)...
which matter gravitationally bound to a body, usually a star, fills its Rochelobe and becomes gravitationally bound to a second body, usually a compact...
example, when any star expands to become a red giant, it may overflow its Rochelobe, the surrounding region where material is gravitationally bound to it;...
doi:10.1143/PTP.81.1006. Di Stefano, Rosanne (2020). "The dynamical Rochelobe in hierarchical triples". Monthly Notices of the Royal Astronomical Society...
in the system will evolve first and as it expands, will overflow its Rochelobe. Mass will quickly transfer from the initially more massive companion...
the less-massive (and the larger) of the two white dwarfs will fill its Rochelobe and start mass transfer to its companion. Soon after the onset of mass...
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