Roche lobe

English Etymology Named after Édouard Roche. Noun en astronomy The teardrop-shaped region around a star in a binary system within which orbiting material is gravitationally bound to that star. en 2002 Accretion Power in Astrophysics Juhan Frank; Andrew King; Derek Raine 54 A further interesting situation (although not one of much relevance for this book) comes about if both stars for some reason fill their Roche lobes simultaneously. en 2012 Structure and Evolution of Single and Binary Stars C. de Loore; C. Doom 386 Generally, mass transfer by Roche lobe overflow is required to power LMXRB's, since low mass stars never exhibit strong stellar winds. en 2013 Eclipsing Binary Stars: Modeling and Analysis Josef Kallrath; Eugene F. Milone 85 If only one component accurately fills its Roche lobe the system is semi-detached. If neither fills its Roche lobe, it is detached. en astronomy by extension Around any two astronomic entities in a "binary system", a teardrop-shaped region, within which orbiting material is gravitationally bound to that entity. en 2023 Rosaly M. C. Lopes, ‎Katherine de Kleer, ‎James Tuttle Keane Io: A New View of Jupiter’s Moon 43 In the accretion disk model, a circumjovian disk forms as solar nebula gas and entrained solid particles (dust to boulder-size) flow through the growing planet's Roche lobes to feed Jupiter during the rapid (runaway) gas-capture phase of core accretion [...]. Related terms en Roche limit en Roche sphere en eponyms