Abstract

The Hα line profile of Algol was studied to determine the nature of the interaction between the gas stream and the primary, and evidence was found of an asymmetric transient accretion disk with an average radius of (1.8 ± 0.2)R A , an electron density N e ≥ 10 10 cm -3 , and mass ≥ 10 -12 M ⊙ . The trailing side of the disk is wider and denser than the leading side. Algol is the first partially eclipsing short-period Algol-type system in which a transient disk has been found

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