Concept information
Terme préférentiel
cataclysmic binary
Définition(s)
- A cataclysmic binary is a close binary system consisting of a white dwarf primary and an orange or red (K- or M-type) main-sequence or giant secondary, in which matter flows from the secondary toward the primary. In most cases, the stripped hydrogen-rich gas enters an accretion disk around the white dwarf and may subsequently fall onto the condensed star to ignite violently in a fusion reaction. Cataclysmic variables fall into two groups. The non-magnetic group, which is by far the most populous, includes U Geminorum stars (dwarf novae) and classical and recurrent novae. The much rarer, magnetic group includes AM Herculis stars and DQ Herculis stars and is distinguished by the presence of a powerful magnetic field around the primary that dramatically affects the accretion flow. (Encyclopedia of Science, by David Darling, https://www.daviddarling.info/encyclopedia/B/binarystar.html#cataclysmic_binary)
Concept(s) générique(s)
Synonyme(s)
- cataclysmic binary star
Traductions
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français
-
étoile binaire cataclysmique
URI
http://data.loterre.fr/ark:/67375/MDL-C594N0HC-W
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