Three-component modelling of O-rich AGB star winds I. Effects of drift using forsterite – dataset

The data provided here include all parameter files, log files, and a set of the
binary output files that are the basis for the publication in A&A.

The file 'file_listing.txt' contains a complete list of files and directories
in all gzipped tar files. Each individual gzipped tar file is formatted as
follows:

 Mm.m_Ll.ll_Ttttt.tar.gz

where
 m.m  :: the assumed mass of the model, in solar masses
 l.ll :: The assumed luminosity, in log10(solar luminosities)
 tttt :: The effective temperature of the star, in Kelvin.

The contents of the tar files vary according to the model, but here is the
general directory structure:

 nodr/  :: non-drift / PC models
 drift/ :: drift models

 nodr/init
 drift/init :: Initial model files created using John Connor.

File suffixes are the following:

 .par :: Plain-text parameter file that contains all parameters that are
         different from the respective default value in the model.
     Consequently, to see what parameters were actually used, it is
     necessary to look in the log file (see below).

 .bin :: Binary file that contains output of converged models. Each model is
         stored in two versions, first the previous time step and then the
     current time step (having access to the model code T-800, data of both
     time steps are needed to restart model calculations at that time
     step).

         The initial model file only contains one model; where the previous
     time step data are the same as the current time step data.

         We provide a tool to read this file, see below.

         Note! These files can get pretty large and are therefore only
       available for a smaller number of the models in the Zenodo dataset.
       Please ask the corresponding author for the missing files is the
       need should appear.

 .log :: Plain-text log file that shows the used model parameters and a number
         of key properties for each converged model.
     The encoding of this file is UTF-8.

 .inf :: Plain-text secondary log file that contains the header of the
         [primary] log file as well as timing information.
     The encoding of this file is UTF-8.

 .tpb :: Secondary binary file that contains a number of properties specified
         at the outer boundary, typically for each consecutive time step.

         We provide a tool to read this file, see below.

 .lis :: Plain-text file with the iteration history. Unavailable here.

 .liv :: Plain-text file with values specified for a number of properties at
         each gridpoint. Unavailable here.

 .inp :: Plain-text file that is used to launch a model; some are present.
         This file is automatically generated by the tool that launches T-800
     and is typically removed when T-800 launches. Unavailable here.

 .eps :: Encapsulated PostScript file created by John Connor when calculating
         the initial model.

Model evolution structure - file endings before the suffix:

 _rlx :: Files related to relaxing the T-800 calculations on the initial model
         created by John Connor.

 _exp :: Files related to expanding the initially compact model to using the
         full radial domain.

 _fix :: Files related to the intermediate stage where calculations are changed
         from expansion to outflow.

 _out :: Files related to the outflow stage of the calculations; this is what
         you want to look at to see the wind evolution. Results in the paper
     are calculated using these data.

 Note! Some outflow stage calculations continue the evolution of the previous
   set of files. The underlying reason for continued calculations is typically
   that the calculated time interval is too short. Such files are typically
   given the extension '_cont.lin_out', '_cont2.lin_out', etc.

Stored data in the binary files:

 The binary files (suffix '.bin') contain the full radial structure in the
 following 10 (PC models) or 11 (drift models) primary variables:

   mr: radius
   mm: integrated [gas] mass
   md: gas density
   mu: gas velocity
   me: internal energy
   mj: radiative energy
   mh: radiative flux
   n0: dust moment, forsterite (Fo)
   nm: number density of magnesium atoms
   ns: number density of silicon atoms
   v0: dust velocity, forsterite (only drift models)

 Other properties are derived from these primary variables using auxiliary code
 that isn't part of this dataset.

Load files:

  Two tools are provided here that can load the binary data files using the
  Interactive Data Language (IDL):

  sc_load_bin (for files with the suffix '.bin'):

    Loads the full content of a T-800 binary file and returns a structure
    with the data.

  sc_load_tpb (for files with the suffix '.tpb'):

    Loads the full content of a T-800 'tpb' binary file and returns a
    structure with the data.

    Note! Due to the way models run on clusters, this file is sometimes
      incomplete; this happens when the model code T-800 is stopped as the
      cluster-specific walltime is reached. If this is the case, it is
      necessary to use the binary file instead, where data are saved
      typically every 20:th time step.

  Alternative tools for use with Python and Julia could be considered for
  writing, but where not yet available when this dataset was made public.
  Please contact the corresponding author for a current status on this issue.