Debris Disk Radiative Transfer
Frequently Asked Questions
Before submitting a question, please, check below if it has already been answered.
- What does the runtime of the code
mainly depend on?
- grain size distribution instead of a single grain size:
increase by a factor of 32
- number of selected dust species (chemical components):
- number of observing wavelengths
- complexity of the uploaded density distribution
- complexity of the uploaded stellar emission SED
- the total runtime is given in the logfile of each project
- "Internal error"?
- Main error source: Uploaded files with wrong format.
Input file formats are defined in the Manual
- Which Browser the Debris Disk
Radiative Transfer Simulator (DDS) has been tested
- Netscape 6.2.2 / 7.0
- Windows Internet Explorer 6.0
- How to find the "log files"?
- Follow the link at the project number in the title of a
page with the results ( example ).
- What, if the optical depth is too high?
- The spectral energy distribution is not displayed at the
- Klick on the "Reload" button of your browser.
- What, if the total abundance of all selected dust species
is not equal to 100%?
- That's ok. Internally, the total abundance is normalized
- Two dust species selected: 30% Mg SiO(3) and 20% Fe O. The simulation will be performed for
60% Mg SiO(3) and 40% Fe O. On the page with the results,
however, you will find your input parameters for the dust abundances.
This allows you to increase/decrease the abundance of a certain dust
component without recalculating the abundances of the other components.
- The dust grain sublimation temperature is a critical
parameter since it determines the inner radius of the disk for each
chemical component and grain size. Based on the results by Bauer et al.
1997 (A&A 317, 273), following sublimation temperatures have
been chosen for the predefined chemical dust components:
- Silicates: 1550 K
- Carbon: 1250 K
You can check the predefined sublimation temperatures
of the different dust species. The links to the dust data files are
on the main model definition page, e.g., Mg SiO(3) .