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Imaging the surface of Altair and a MIRC update

2008; SPIE; Volume: 7013; Linguagem: Inglês

10.1117/12.789754

1996-756X

John D. Monnier, Ming Zhao, E. Pedretti, N. Thureau, Michael Ireland, Philip S. Muirhead, Jean-Philippe Berger, R. Millan‐Gabet, Gerald van Belle, Theo A. ten Brummelaar, Harold A. McAlister, Stephen T. Ridgway, N. Turner, L. Sturmann, J. Sturmann, Daniel Berger, A. Tannirkulam, J. Blum,

Geomagnetism and Paleomagnetism Studies

We report the first scientific results from the Michigan Infrared Combiner (MIRC), including the first resolved image of a main-sequence star besides the Sun. Using the CHARA Array, MIRC was able to clearly resolve the well-known elongation of Altair's photosphere due to centrifugal distortion, and was also able to unambiguously image the effect of gravity darkening. In this report, we also show preliminary images of the interacting binary β Lyr and give an update of MIRC performance.