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Resolving the Delta Andromedae Spectroscopic Binary with Direct Imaging

Bottom, Michael and Kuhn, Jonas and Mennesson, Bertrand and Mawet, Dimitri and Shelton, Jean C. and Wallace, J. Kent and Serabyn, Eugene (2015) Resolving the Delta Andromedae Spectroscopic Binary with Direct Imaging. Astrophysical Journal, 809 (1). Art. No. 11. ISSN 0004-637X. doi:10.1088/0004-637X/809/1/11.

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We present a direct image of the innermost companion to the red giant δ 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.

Item Type:Article
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URLURL TypeDescription Paper
Bottom, Michael0000-0003-1341-5531
Mennesson, Bertrand0000-0003-4205-4800
Mawet, Dimitri0000-0002-8895-4735
Shelton, Jean C.0000-0001-8982-1654
Additional Information:© 2015 The American Astronomical Society. Received 2015 April 23; accepted 2015 June 23; published 2015 August 4. We are pleased to acknowledge the Palomar Observatory staff for their excellent support, particularly Steve Kunsman. We greatly benefited from the expert assistance of Rick Burruss (JPL) with the adaptive optics system. We thank the referee for a useful review, particularly for pointing out some discrepancies in our analysis and previous work, which improved the paper. Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration (NASA). M.B. is supported by a NASA Space Technology Research Fellowship, grant NNX13AN42H.
Funding AgencyGrant Number
Subject Keywords:binaries: spectroscopic – instrumentation: adaptive optics – instrumentation: high angular resolution – stars: imaging
Issue or Number:1
Record Number:CaltechAUTHORS:20151016-155237644
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61238
Deposited By: Tony Diaz
Deposited On:16 Oct 2015 23:05
Last Modified:10 Nov 2021 22:46

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