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arXiv · 1506.07517

Resolving the delta Andromedae spectroscopic binary with direct imaging

Michael Bottom·Jonas Kuhn·Bertrand Mennesson·Dimitri Mawet·Jean C. Shelton·J. Kent Wallace·Eugene Serabyn
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Abstract

We present a direct image of the innermost companion to the red giant delta Andromedae using the Stellar Double Coronagraph at the Palomar Observatory. We use a Markov chain Monte Carlo based algorithm to simultaneously reduce the data and perform astrometry and photometry of the companion. We determine that the companion is most likely a main-sequence K-type star and is certainly not the previously hypothesized white dwarf.

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Michael Bottom, Jonas Kuhn, Bertrand Mennesson, Dimitri Mawet, Jean C. Shelton, J. Kent Wallace, Eugene Serabyn. 2015-06-24. Resolving the delta Andromedae spectroscopic binary with direct imaging. https://doi.org/10.1088/0004-637x/809/1/11

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