In the Shadow of the Transiting Disk: Imaging epsilon Aurigae in Eclipse - INSPIRE

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In the Shadow of the Transiting Disk: Imaging epsilon Aurigae in Eclipse

Apr, 2010

3 pages

Published in:

Nature 464 (2010) 870-872

e-Print:

1004.2464 [astro-ph.SR]

DOI:

10.1038/nature08968

View in:

ADS Abstract Service

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Abstract: (arXiv)

Eclipses of the single-line spectroscopic binary star, epsilon Aurigae, provide an opportunity to study the poorly-defined companion. We used the MIRC beam combiner on the CHARA array to create interferometric images during eclipse ingress. Our results demonstrate that the eclipsing body is a dark disk that is opaque and tilted, and therefore exclude alternative models for the system. These data constrain the geometry and masses of the components, providing evidence that the F-star is not a massive supergiant star.

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