RESOLVING THE DELTA ANDROMEDAE SPECTROSCOPIC BINARY WITH DIRECT IMAGING

被引:7
作者
Bottom, Michael [1 ]
Kuhn, Jonas [2 ,3 ]
Mennesson, Bertrand [2 ]
Mawet, Dimitri [1 ]
Shelton, Jean C. [2 ]
Wallace, J. Kent [2 ]
Serabyn, Eugene [2 ]
机构
[1] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA
[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[3] ETH, Inst Astron, CH-8093 Zurich, Switzerland
关键词
binaries: spectroscopic; instrumentation: adaptive optics; instrumentation: high angular resolution; stars: imaging; ADAPTIVE OPTICS; HIPPARCOS; ASTROMETRY;
D O I
10.1088/0004-637X/809/1/11
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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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页数:4
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