Detecting extrasolar planets with sparse aperture masking

Michael J. Ireland

doi:10.1117/12.928884

12 September 2012 Detecting extrasolar planets with sparse aperture masking

Michael J. Ireland

Proceedings Volume 8445, Optical and Infrared Interferometry III; 844506 (2012) https://doi.org/10.1117/12.928884
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Extrasolar planets are directly detected most easily when they are young and can have contrasts only a few hundred times fainter than their host stars at near- and mid- infrared wavelengths. However, planets and other solar-system scale structures around solar-type stars in the nearest star forming regions require the full diffraction limit of the world's largest telescopes, and can not be detected with conventional AO imaging techniques. I will describe the recent successes of long-baseline interferometry in detecting planetary-mass companions, focusing on the transitional disk system LkCa 15. I will outline why aperture-masking has been so successful in its resolution and sensitivity niche, and will outline the algorithms needed to calibrate the primary observable of closure/kernel phase to the level needed for extrasolar planet detection.

Citation Download Citation

Michael J. Ireland "Detecting extrasolar planets with sparse aperture masking", Proc. SPIE 8445, Optical and Infrared Interferometry III, 844506 (12 September 2012); https://doi.org/10.1117/12.928884

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