SIMBAD references

1998A&A...338..957V - Astronomy and Astrophysics, volume 338, 957-964 (1998/10-3)

Wind-driven evolution of supersoft X-ray binaries with low-mass secondaries.

VAN TEESELING A. and KING A.R.

Abstract (from CDS):

We show that all supersoft X-ray binaries should excite strong winds ({dot}(M)wind∼10–7M/yr) from the irradiated companion star. Scattering and absorption in this wind is likely to have a significant effect on the orbital X-ray light curve. In systems with a low-mass companion (M2/M1≲0.7), such as the 4hr supersoft X-ray binary 1E 0035.4-7230, the angular momentum loss in the wind may dominate the binary evolution and drive Roche lobe overflow at a rate comparable to the wind-loss rate. This may self-consistently sustain stable recurrent or steady-state hydrogen burning on the accreting white dwarf and keep the binary as a supersoft X-ray binary. These low-mass wind-driven supersoft X-ray binaries evolve towards longer periods, and can cross the period region populated by supersoft X-ray binaries driven by thermal-timescale mass transfer from a companion star more massive than the white dwarf. Starting from a massive white dwarf, low-mass wind-driven supersoft X-ray binaries may drive the white dwarf over the Chandrasekhar limit and produce a type Ia supernova.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - stars: individual: 1E 0035.4-7230 - stars: mass-loss - novae, cataclysmic variables - supernovae: general - X-rays: stars

Simbad objects: 6

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