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arXiv · astro-ph/0703244

Born Again Protoplanetary Disk Around Mira B

M. J. Ireland·J. D. Monnier·P. G. Tuthill·R. W. Cohen·J. M. De Buizer·C. Packham·D. Ciardi·T. Hayward·J. P. Lloyd
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Abstract

The Mira AB system is a nearby (~107 pc) example of a wind accreting binary star system. In this class of system, the wind from a mass-losing red giant star (Mira A) is accreted onto a companion (Mira B), as indicated by an accretion shock signature in spectra at ultraviolet and X-ray wavelengths. Using novel imaging techniques, we report the detection of emission at mid-infrared wavelengths between 9.7 and 18.3 $μ$m from the vicinity of Mira B but with a peak at a radial position about 10 AU closer to the primary Mira A. We interpret the mid-infrared emission as the edge of an optically-thick accretion disk heated by Mira A. The discovery of this new class of accretion disk fed by M-giant mass loss implies a potential population of young planetary systems in white-dwarf binaries which has been little explored, despite being relatively common in the solar neighborhood.

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M. J. Ireland, J. D. Monnier, P. G. Tuthill, R. W. Cohen, J. M. De Buizer, C. Packham, D. Ciardi, T. Hayward, J. P. Lloyd. 2007-03-10. Born Again Protoplanetary Disk Around Mira B. https://doi.org/10.1086/517993

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