Kernel phase imaging with VLT/NACO: high-contrast detection of new candidate low-mass stellar companions at the diffraction limit
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Kammerer, Jens; Ireland, Michael; Martinache, Frantz; Girard, Julien H.
Description
Directly imaging exoplanets is challenging because quasi-static phase aberrations in the pupil plane (speckles) can mimic the signal of a companion at small angular separations. Kernel phase, which is a generalization of closure phase (known from sparse aperture masking), is independent of pupil plane phase noise to second order and allows for a robust calibration of full pupil, extreme adaptive optics observations. We applied kernel phase combined with a principal component based...[Show more]
Collections | ANU Research Publications |
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Date published: | 2019 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/287983 |
Source: | Monthly Notices of the Royal Astronomical Society |
DOI: | 10.1093/mnras/stz882 |
Access Rights: | Open Access |
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File | Description | Size | Format | Image |
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stz882.pdf | 3.72 MB | Adobe PDF |
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