RADMC: A code for 2-D axisymmetric dust continuum transfer

C.P. Dullemond

General description

RADMC is a 2-D Monte-Carlo code for dust continuum radiative transfer circumstellar disks and envelopes. It is based on the method of Bjorkman & Wood (ApJ 2001, 554, 615), but with several modifications to produce smoother results with fewer photon packages.

The RADMC package includes the following programs:

  • RADMC: The basic FORTRAN program for computing the radiative transfer through an axisymmetric configuration of dust. The main input is the density structure of the dusty circumstellar material, the dust opacity tables and the stellar parameters. The output is the dust temperature structure and the scattering source functions. It also outputs a crude set of SEDs at various inclinations, which are, however, only meant for testing. RADMC can also compute the vertical structure of a disk for you, optionally. Here is a list of capabilities of RADMC:
    • Irradiation of a circumstellar envelope or disk by the photons from the central star (basic functionality).
    • External (interstellar) radiation field.
    • Iteration on the vertical structure
    • Multiple dust species, each with its own dust temperature
    • Quantum-heated grains (in combination with the PAHCODE program).
  • RAYTRACE: A FORTRAN ray-tracing program which should be executed after the RADMC run in order to produce images and/or SEDs at any inclination. RAYTRACE can be used multiple times after a single RADMC run. A summary of capabilities:
    • Make spectrum (SED) at a given inclination
    • Make spectra at N inclinations, divided evenly between incl=0 and incl=90 degrees, and automatically check flux conservation.
    • Make images at a given wavelength (or given range of wavelengts) and given inclination, zoom-factor and position angle.
    • Produce `circular images', which is the intensity at pixels arranged in concentric circles such that all spatial scales are resolved at once. These `images' stand at the basis of a robust IDL routine for computing the visibilities and phases for interferometry, without having to worry about the correct pixel scales etc.
  • problem_*.pro: A set of IDL routines that can help the user set up the particular problem he/she wants to solve. These routines are just meant as a template for the user: they are not considered to be an integral part of the RADMC software. Instead it is expected that the user changes these routines to her/his needs. NOTE: There will be various versions of this set of IDL setup routines around. There is no real standard version of this set of routines.
  • analyze.pro: An IDL library of routines for reading and plotting the results of the RADMC/RAYTRACE software.

Download

First of all, please heed this: You are free to use the code, but at your own responsibility. Please read the manual and follow the various pieces of advice on how to carefully prepare models and test their results!!!

Also, when using this code, please cite the following paper, where this code was first used:
Dullemond and Dominik (2004), Astronomy and Astrophysics 417, 159-168.

You can now download in the following steps:

  • Send me an email with your intent to use the code, so that I can add you to my RADMC-users list. This is not absolutely required (and you can also choose to do it later, once you have experimented with the code and are sure you're going to use it for your research). But it is important for you as the user to be kept in the loop in case of new bugfixes or so.
  • You can now download version disk2d_rel_3.1_06.08.10.zip.
  • Some older versions remain available disk2d_rel_3.1_03.11.08_a.zip, disk2d_rel_3.1_14.05.10.zip.
  • In case you experience trouble or have any questions, just send me an email. Same is true for bug reports.
  • Please don't forget to cite the above paper.

Note: eventually RADMC will be retired in favor of RADMC-3D (see below). RADMC will then still be available, but not kept up to date.

Future versions

I am currently working on a 3-D version of RADMC, including AMR grid refinement. A first beta version is available upon request. You can visit the RADMC-3D web page to see a preview.

User Pages

The problem_*.pro IDL routines are usually modified by various users. Some circles of users have their own sets of routines for particular setups. Here is/are pages for specific sets of users who wish to make their setups available to others within the group.
Last update: January 30, 2009
dullemon@mpia.de