pyCloudy input file commands

[sherry yeh]

Hi All, 

I have a couple of questions regarding setting up geometry, ionizing source, and save commands in pyCloudy.

1. How to set up a cylindrical geometry in pyCloudy? Would it be something like c_input.set_cylinder() ? 

2. I use customized stellar atmospheric models in Cloudy as my ionizing source. How do I read in customized models in pyCloudy? 

3. I need to save specific emission line fluxes, and in Cloudy I do "save line list". In my pyCloudy-generated input files I saw a series of save commands such as "save last overview ".ovr" ", but I couldn't find where it came from.   

Thanks for your help, I am excited to run C3D once I have C1D set up correctly. 

-Sherry

[Christophe Morisset]

Hi Sherry,

Great you appreciate using pyCloudy!

Hi All, 

I have a couple of questions regarding setting up geometry, ionizing source, and save commands in pyCloudy.

1. How to set up a cylindrical geometry in pyCloudy? Would it be something like c_input.set_cylinder() ? 

 

Anything that is not in a predefined method in the CloudyInput class can be set up using the set_others() method:

c_input.set_other(('no molecules',
                   'no level2 lines',
                   'no fine opacities',
                   'atom h-like levels small',
                   'atom he-like levels small',
                   'COSMIC RAY BACKGROUND',
                   'element limit off -8',
                   'cylinder log semi height=9.12',
 ))

 

2. I use customized stellar atmospheric models in Cloudy as my ionizing source. How do I read in customized models in pyCloudy? 

Use the set_star method, as in:

c_input.set_star(SED = 'table Rauch', SED_params = (60000, 6.0), lumi_unit='luminosity solar log', lumi_value=55)

3. I need to save specific emission line fluxes, and in Cloudy I do "save line list". In my pyCloudy-generated input files I saw a series of save commands such as "save last overview ".ovr" ", but I couldn't find where it came from.   

You may use the set_line_file, as in

c_input.set_line_file(line_file = 'mylinelist.dat', absolute=False)

In a more general way, you can explore all the methods of the CloudyInput class using the help command:

help(pc.CloudyInput)
help(pc.CloudyModel)

etc.

Thanks for your help, I am excited to run C3D once I have C1D set up correctly. 

-Sherry

Hope it helps,

Christophe

[sherry yeh]

Hi Christophe,

Thanks for your prompt reply, very helpful! 

For input ionizing source I actually need table star "model.dat" <temperature> <log_surface_gravity>. set_star did not include "table star" in the line so Cloudy complained. How do I call the table star function? 

Thanks,

Sherry

[Christophe Morisset]

Hi Sherry,

You may try:

c_input.set_star(SED = 'table star "model.dat", SED_params = (temperature, logg), lumi_unit='luminosity solar log', lumi_value=55))

If this does not work, you can always put the information in the set_others method, which accept any command. Take care to also put the luminosity information in the set_others, as Cloudy likes having both information close together.

Hope it solves the problem,

Saludos,

Christophe