Rapid rotation and accretion luminosity can drive mass out of a binary

Walter Van Rensbergen, Jean De Greve, Camiel De Loore, Nicki Mennekens, Frederik Timmermans

Research output: Chapter in Book/Report/Conference proceedingMeeting abstract (Book)Research

Abstract

Algol binaries show a well defined distribution of orbital periods and mass ratios. The distribution of mass ratios can however not be obtained by conservative binary evolution only. Many progenitors of Algols lose some mass and little angular momentum during short phases of rapid Roche Lobe Overflow. Rapid rotational velocity caused by spin-up of the gainer combines with accretion luminosity in a hot spot. The energies of both effects together may overcome the binding energy of matter in the hot spot during a short era of rapid RLOF. As a consequence Algols will remain in a state of high mass ratio for a longer time as required by the observations.
Original languageEnglish
Title of host publicationNederlandse Astronomen Conferentie 2007
Publication statusPublished - 14 May 2007
EventFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet - Stockholm, Sweden
Duration: 21 Sep 200925 Sep 2009

Publication series

NameNederlandse Astronomen Conferentie 2007

Conference

ConferenceFinds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet
Country/TerritorySweden
CityStockholm
Period21/09/0925/09/09

Keywords

  • binary stars

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