A Dor - An Eclipsing Subdwarf - Brown Dwarf Binary
classification
🌌 astro-ph
keywords
analysisbinarybrowndwarfeclipsingprimaryresultsspectral
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AA Dor is an eclipsing, close, post common-envelope binary (PCEB) consisting of a sdOB primary star and an unseen cool companion with an extraordinary low mass. The evolution of this system appears enigmatic - results of a recent spectral analysis of the primary has shown that the secondary is formally a brown dwarf. We present results of a spectral analysis which is based on phase-resolved high-resolution and high-SN spectroscopy.
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