Changes between Version 54 and Version 55 of StellarAtmospheres


Ignore:
Timestamp:
2017-01-12T10:12:54Z (11 months ago)
Author:
peter
Comment:

replace c16 -> c17

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  • StellarAtmospheres

    v54 v55  
    9292This shows that the ''Tlusty'' O star 3-dimensional grid has three parameters, the temperature, gravity, and metallicity.  The ''Werner'' star grid has two parameters (the square brackets indicate that the second parameter is optional), and the ''WMbasic'' grid again has three parameters.  This output lists all the grids installed on your computer, excluding any grids that you defined yourself (since Cloudy doesn't know the names you gave to those files).
    9393
    94 Starting with Cloudy C16 the output of the '''''table star available''''' command will also list several forms of the '''''table star hm05''''' and '''''table hm12''''' commands. These grids differ in certain aspects from the standard stellar atmosphere grids (e.g., they implicitly set the intensity). But they use the same underlying code infrastructure and the data files are fully compatible with standard stellar atmosphere grids. This is why they are included in the output.
     94Starting with Cloudy C17 the output of the '''''table star available''''' command will also list several forms of the '''''table star hm05''''' and '''''table hm12''''' commands. These grids differ in certain aspects from the standard stellar atmosphere grids (e.g., they implicitly set the intensity). But they use the same underlying code infrastructure and the data files are fully compatible with standard stellar atmosphere grids. This is why they are included in the output.
    9595
    9696The command '''''table star <grid> list''''' will list the models contained in that grid. The parameter '''''<grid>''''' should use the same syntax as given in the output from the '''''table star available''''' command (without the parameters). An example would be '''''table star tlusty Ostar Z+0.3 list''''', which produces (assuming the grid is installed on your computer):
     
    127127== Using ascii files directly ==
    128128
    129 We are in the process of removing the need for compiled binary files and allow the code work directly on the ascii files. This work is still in progress, but some of the new functionality is already available. Starting with Cloudy version C16 you can use the command '''''table star "<yourname.ascii>" <par1> <par2> ...''''' to interpolate directly on the data in the ascii file and skip the compilation stage. This works well for small grids (roughly 1 to 10 MB in size, depending on the speed of the computer). For large grids we will likely introduce a new (and optional) form of compilation that is independent of the frequency mesh in Cloudy to help speed up the reading process.
    130 
    131 Starting with Cloudy C16 we also support the command '''''table star "<yourname.ascii>" list''''' to list the contents of an ascii file. All other '''''table star''''' commands still require the use of compiled binary files.
     129We are in the process of removing the need for compiled binary files and allow the code work directly on the ascii files. This work is still in progress, but some of the new functionality is already available. Starting with Cloudy version C17 you can use the command '''''table star "<yourname.ascii>" <par1> <par2> ...''''' to interpolate directly on the data in the ascii file and skip the compilation stage. This works well for small grids (roughly 1 to 10 MB in size, depending on the speed of the computer). For large grids we will likely introduce a new (and optional) form of compilation that is independent of the frequency mesh in Cloudy to help speed up the reading process.
     130
     131Starting with Cloudy C17 we also support the command '''''table star "<yourname.ascii>" list''''' to list the contents of an ascii file. All other '''''table star''''' commands still require the use of compiled binary files.
    132132
    133133-------
     
    253253== The Haardt & Madau grids ==
    254254
    255 These grids give the cosmic ultraviolet background radiation as a function of redshift. The necessary data files are included in the Cloudy distribution by default, so no separate download is necessary. They were calculated with the [http://www.ucolick.org/~pmadau/CUBA/HOME.html CUBA code]. Three versions are available: from 1996, 2005 and 2012. The first data set gives the background for a single redshift, while the latter two give a grid of SEDs as a function of redshift. Since Cloudy version C16, the 2005 and 2012 data sets are implemented using the stellar atmosphere grid infrastructure. These grids differ in certain aspects from the standard stellar atmosphere grids (e.g., they implicitly set the intensity) which is why they have a separate command syntax: '''''table hm96''''', '''''table hm05''''', and '''''table hm12'''''. See Hazy 1 for further details. The first two data sets are described in [http://arxiv.org/abs/astro-ph/9509093 Haardt & Madau (1996) ApJ 461, 20]. The 2012 grid is described in [http://arxiv.org/abs/1105.2039 Haardt & Madau (2012) ApJ 746, 125].
     255These grids give the cosmic ultraviolet background radiation as a function of redshift. The necessary data files are included in the Cloudy distribution by default, so no separate download is necessary. They were calculated with the [http://www.ucolick.org/~pmadau/CUBA/HOME.html CUBA code]. Three versions are available: from 1996, 2005 and 2012. The first data set gives the background for a single redshift, while the latter two give a grid of SEDs as a function of redshift. Since Cloudy version C17, the 2005 and 2012 data sets are implemented using the stellar atmosphere grid infrastructure. These grids differ in certain aspects from the standard stellar atmosphere grids (e.g., they implicitly set the intensity) which is why they have a separate command syntax: '''''table hm96''''', '''''table hm05''''', and '''''table hm12'''''. See Hazy 1 for further details. The first two data sets are described in [http://arxiv.org/abs/astro-ph/9509093 Haardt & Madau (1996) ApJ 461, 20]. The 2012 grid is described in [http://arxiv.org/abs/1105.2039 Haardt & Madau (2012) ApJ 746, 125].
    256256
    257257----