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Passive Irradiated Circumstellar Disks with an Inner Hole
A model for irradiated dust disks around Herbig Ae stars is proposed. The model is based on the flaring disk model given by Chiang and Goldreich in 1997, but with the central regions of the diskExpand
Flaring vs. self-shadowed disks: The SEDs of Herbig Ae/Be stars
Isolated Herbig Ae stars can be divided into two groups (Meeus et al. 2001): those with an almost flat spectral energy distribution in the mid-infrared ("group I"), and those with a strong declineExpand
The Physics of Dust Coagulation and the Structure of Dust Aggregates in Space
Even though dust coagulation is a very important dust-processing mechanism in interstellar space and protoplanetary disks, there are still important parts of the physics involved that are poorlyExpand
The effect of dust settling on the appearance of protoplanetary disks
We analyze how the process of dust settling affects the spectral energy distribution and optical appearance of pro- toplanetary disks. Using simple analytic estimates on the one hand, and detailedExpand
Dust coagulation in protoplanetary disks: A rapid depletion of small grains
We model the process of dust coagulation in protoplanetary disks and calculate how it affects their observational appearance. Our model involves the detailed solution of the coagulation equation atExpand
A 10 μm spectroscopic survey of Herbig Ae star disks: Grain growth and crystallization
We present spectroscopic observations of a large sample of Herbig Ae stars in the 10 µm spectral region. We perform compositional fits of the spectra based on properties of homogeneous as well asExpand
Incidence and survival of remnant disks around main-sequence stars
We present photometric ISO 60 and 170 um measurements, complemented by some IRAS data at 60 ${\mu\textrm{m}}$, of a sample of 84 nearby main-sequence stars of spectral class A, F, G and K in order toExpand
Processing of silicate dust grains in Herbig Ae/Be systems
We have analysed the 10 m spectral region of a sample of Herbig Ae/Be (HAEBE) stars. The spectra are dominated by a broad emission feature caused by warm amorphous silicates, and by polycyclicExpand
Age Dependence of the Vega Phenomenon: Theory
In a separate paper, we have reexamined the observations of IR excess obtained with the Infrared Space Observatory satellite and discussed the ages of stars with excess. The amount of dust (measuredExpand
Understanding the spectra of isolated Herbig stars in the frame of a passive disk model
We discuss spectral energy distributions of a sample of Herbig Ae/Be stars in the context of a passive irradiated disk model. The data have been presented earlier by Meeus et al. (2001), andExpand