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Disk and stellar continuum – DISCO


Model of the continuum emission from a star surrounded by a gaseous circumstellar disk (free-free and bound-free). The disk is assumed to be partially ionized and geometrically thin, with a physical structure given by the viscous Keplerian decretion disk model and depending on physical input parameters (e.g. temperature, density). Images include contributions from the stellar photosphere and from the free-free and bound-free disk emission. DISCO is well suited to model Be stars, but can also be used to model other objects with similar physical components.

Sample output file (.fits)

The DISCO model was created by A. Domiciano de Souza based on the work of Rodrigo G. Vieira.

It is described in the following articles:

  • The pseudo-photosphere model for the continuum emission of gaseous disks
    R. G. Vieira, A. C. Carciofi and J. E. Bjorkman
    MNRAS 454, 2107-2119 (2015)
    DOI | ads
  • Non-isothermal effects on Be disks
    R. G. Vieira, A. C. Carciofi and J. E. Bjorkman
    ASPC 506, 135-142 (2016)
    arXiv | ads

AMHRA's DISCO service can be acknowledged by:

  • Mentioning “This research has made use of the Jean-Marie Mariotti Center (JMMC) — MOIO AMHRA service at https://amhra.jmmc.fr/.”
  • And citing the two articles above.

Submit your request

To submit your parameters, you can either:
  • Manually fill the fields below
  • Pre-fill the fields with default values:
  • Upload a parameters file [sample file]:

Central star


Circumstellar gas-disk


Geometrical and numerical parameters


Spectral coverage