Definition
The teardrop-shaped region around each star in a binary system within which material is gravitationally bound to that star. When a star expands beyond its Roche lobe, material can flow to its companion.
Etymology
Named after French mathematician Édouard Roche who studied the problem in 1848. 'Lobe' from Greek 'lobos' meaning 'rounded projection'. Roche analyzed the gravitational equipotential surfaces in binary systems.
Kelly Says
The Roche lobe creates a cosmic 'sphere of influence' where each star in a binary system can hold onto its material! When stars evolve and expand beyond this invisible boundary, they begin feeding their companion—like a stellar vampire relationship.
Translations
ARالعربية
ذيل روش
ḏayl rūš
CACatalà
lòbul de Roche
loːbʊl də ˈroʃə
CSČeština
Rocheův lalok
roxeuv lalok
DADansk
Roche-lob
ʁoʃə lob
DEDeutsch
Roche-Lobe
ʁoʃə loːbə
ELΕλληνικά
λοβός Ρος
lovos ros
ESEspañol
lóbulo de Roche
ˈlobulo ðe ˈrotʃe
FAفارسی
لوبی روش
lubi rōš
FISuomi
Roche-lobo
roche lobo
FRFrançais
lobe de Roche
lob də ʁɔʃ
HAHA
lóbulo na Roche
lobulo na roche
HEעברית
לובוס רוש
lobus rosh
HIहिन्दी
रोश लोब
rosh lob
HUMagyar
Roche-lóbusz
roʃe loːbus
IDBahasa Indonesia
lóbulo Roche
lobulo roche
IGIG
lóbulo nke Roche
lobulo nke roche
ITItaliano
lobo di Roche
loːbo di ˈrɔke
JA日本語
ロッシュ・ローブ
rosyu roobu
KKKK
Рош лобусы
roš lobusɯ
KMKM
លុបរបស់រូស
lup robɑh rohs
MSBahasa Melayu
lóbulo Roche
lobulo roche
MYမြန်မာ
ရိုရှ် လွှာ
roʃ lwa
NLNederlands
Roche-lob
roʃə lob
NONorsk
Roche-lob
roʃ lob
PLPolski
łuk Roche'a
wuk ˈrɔxɛ
PTPortuguês
lóbulo de Roche
ˈlobulu dɨ ˈʁɔʃi
RORomână
lobul lui Roche
lobul luɪ ˈroʃe
RUРусский
лоб Роша
lob ˈroʂa
SVSvenska
Roche-lob
roʃ lob
SWKiswahili
lobo la Roche
lobo la roche
TAதமிழ்
ரோச் லோப்
rōc lōp
TEతెలుగు
రోష్ లోబ్
rōṣ lōb
THไทย
ล็อบของโรช
lob kʰɔ̄ːŋ roːt
TLTL
lóbulo ng Roche
lobulo ng roche
TRTürkçe
Roche lobu
roʃe loːbu
UKУкраїнська
лоб Роша
lob roʃa
VITiếng Việt
thùy Roche
tʰùy roche
YOYO
lóbulo ti Roche
lobulo ti roche
ZUZU
ilobhu leRoche
ilobhu le roche