Applications of Long Baseline Interferometry on Rapid Rotators, Binaries, and Hot Jupiters

M. Zhao, J.~D. Monnier, T. ten Brummelaar, E. Pedretti, N. Thureau

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Long baseline optical inerferometers now have the power to resolve objects as small as 0.5 milliarcseconds in the near-IR, allowing us to study stars and their environment in unprecedented detail. As a fundamental property of stars, rotation affects stars' luminosities, Teffs, and their life times, etc. Since most hot stars are rapid rotators, understanding the effects of rotation will shed light on critical areas of stellar evolution and basic astrophysics. Using CHARA-MIRC, we resolved the surface of Altair, resulting in the first image of a main sequence star other than the Sun. We also imaged and modeled Alp Oph and Alp Cep, allowing us to confirm the "gravity darkening" phenomenon and investigate the impact of their rapid rotation to the H-R diagram. In addition to rapid rotators, we also made the first resolved images of the well-known interacting and eclipsing binary system Beta Lyrae, allowing us to obtain its full orbital parameters. Lastly, we present our efforts on direct detection of nearby hot Jupiters using precision closure phase, showing that it is feasible with CHARA-MIRC and the CHAMP fringe tracker.
Original languageEnglish
Title of host publicationAmerican Astronomical Society Meeting Abstracts 213
Subtitle of host publication#314.03
Pages291
Number of pages1
Volume41
Publication statusPublished - 1 Jan 2009

Publication series

NameBulletin of the American Astronomical Society

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    Zhao, M., Monnier, J. D., ten Brummelaar, T., Pedretti, E., & Thureau, N. (2009). Applications of Long Baseline Interferometry on Rapid Rotators, Binaries, and Hot Jupiters. In American Astronomical Society Meeting Abstracts 213: #314.03 (Vol. 41, pp. 291). (Bulletin of the American Astronomical Society).