The minimum orbital period in thermal time-scale mass transfer

King, A.R.; Schenker, K.; Kolb, U. and Davies, M.B. (2001). The minimum orbital period in thermal time-scale mass transfer. Monthly Notices of the Royal Astronomical Society, 321(2) pp. 327–332.

DOI: https://doi.org/10.1046/j.1365-8711.2001.04002.x

Abstract

We show that the usual picture of supersoft X-ray binary evolution as driven by conservative thermal time-scale mass transfer cannot explain the short orbital periods of RX J0537.7–7034 (3.5 h) and 1E 0035.4–7230 (4.1 h). Non-conservative evolution may produce such periods, but requires very significant mass loss, and is highly constrained.

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