Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.1715m&link_type=abstract
American Astronomical Society Meeting 205, #17.15; Bulletin of the American Astronomical Society, Vol. 36, p.1367
Astronomy and Astrophysics
Astronomy
6
Scientific paper
Using the Keck-1 telescope, we have measured the sizes of Herbig Ae/Be disks in the thermal infrared, a wavelength range which probes the region of the circumstellar disk where gas giant planets are expected to form. Previous attempts to obtain precisely calibrated imaging data with Keck/LWS have been frustrated by unstable atmospheric seeing which affects the time-averaged PSF. To overcome this, we have carried-out a novel sparse-aperture interferometry experiment to enable robust mid-IR diffraction-limited imaging. Specifically, selected subsets of Keck-1 primary segments have been independently repointed using custom programming, yielding the well-established calibration advantages of sparse-aperture Fizeau interferometry. We present inital results and compare to recent results from nulling interferometry.
Cohen Ralph
Ireland Michael J.
Monnier John D.
Tannirkulam Ajay
Tuthill Peter G.
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