David Wilner

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We review the properties of dust in protoplanetary disks around optically visible pre-main sequence stars obtained with a variety of observational techniques, from measurements of scattered light at visual and infrared wavelengths to mid-infrared spectroscopy and millimeter interferometry. A general result is that grains in disks are on average much larger(More)
The formation of gaseous giant planets is thought to occur in the first few million years after stellar birth. Models predict that the process produces a deep gap in the dust component (shallower in the gas). Infrared observations of the disk around the young star HD 142527 (at a distance of about 140 parsecs from Earth) found an inner disk about 10(More)
We present new multi-wavelength millimeter interferometric observations of the Herbig Ae star HD 163296 obtained with the IRAM/PBI, SMA and VLA arrays both in continuum and in the 12 CO, 13 CO and C 18 O emission lines. Gas and dust properties have been obtained comparing the observations with self-consistent disk models for the dust and CO emission. The(More)
We have developed a physically self-consistent model of the disk around the nearby 10 Myr old star TW Hya which matches the observed spectral energy distribution and 7mm images of the disk. The model requires both significant dust size evolution and a partially-evacuated inner disk region, as predicted by theories of planet formation. The outer disk, which(More)
We observed the clustered star forming complex NGC 1333 with the BIMA and FCRAO telescopes in the transitions HCO + (1–0) and N 2 H + (1–0) over an 11 ′ × 11 ′ area with resolution ∼ 10 ′′ (0.015 pc). The N 2 H + emission follows very closely the submillimeter dust continuum emission, while HCO + emission appears more spatially extended and also traces(More)
Brief Summary • The interaction between design, synthesis, and domain knowledge for real-time systems needs to be explored in more depth, particularly for embedded systems. • Researchers in real-time systems seem to be lacking an established set of benchmark programs. Without some commonly accepted benchmark suites, it is difficult if not impossible to(More)
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