Some aspects of mass loss and mass transfer in Algol variables

Details Some aspects of mass loss and mass transfer in Algol variables Some aspects of mass loss and mass transfer in Algol variables

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apjs...46....1g&link_type=abstract

Astrophysical Journal Supplement Series, vol. 46, May 1981, p. 1-26. Research supported by the Consiglio Nazionale delle Richer

Astronomy and Astrophysics

Astrophysics

46

Eclipsing Binary Stars, Mass Transfer, Stellar Mass, Stellar Mass Ejection, Variable Stars, Mass Ratios, Momentum Transfer, Statistical Analysis, Stellar Evolution, Stellar Motions

Scientific paper

Algol variables are examined to clarify evolutionary implications, and check the validity of simple models of nonconservative mass transfer. Properties of Algol variables, including the distribution of mass, radii, mass ratios, and orbital periods, are compared with statistical analyses of eclipsing and spectroscopic binaries. Results indicate that as the total mass of the Algol system increases, the orbital period decreases, the mass ratio increases, and the secondary components become less prominent. Initial values of orbital periods and total mass are estimated and calculated according to conservative assumptions, although the evolutionary status of 20 percent of the Algol variables could not be accounted for using these calculations. Relatively large mass and angular momentum loss is found in several Algol variables, and case B mass exchange is so strongly favored for variables of relatively low mass, that no candidate for products of case A mass transfer exists. Case A is found to predominate for variables of higher total mass, although not as strongly as expected, and thus a large deficit of case A remnant systems is observed.

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