dustem_make_polarization_sed_example.pro
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PRO dustem_make_polarization_sed_example,model=model,filters=filters,help=help,outfile=outfile
;+
; NAME:
; dustem_make_polarization_sed_example
; PURPOSE:
; This is an example of how to generate an SED using DustEMWrap.
; It is meant to be an example to follow when writing your own
; programs using DustEMWrap
; CATEGORY:
; DustEMWrap, Distributed, High-Level, User Example
; CALLING SEQUENCE:
; dustem_make_polarization_sed_example[,model=][,filters=][,/help]
; INPUTS:
; None
; OPTIONAL INPUT PARAMETERS:
; None
; OUTPUTS:
; None
; OPTIONAL OUTPUT PARAMETERS:
; outfile = path+filename for .xcat output of the SED
; ACCEPTED KEY-WORDS:
; model = if set, name of the DustEM dust model to use (default='G17_MODELC')
; help = If set print this help
; COMMON BLOCKS:
; None
; SIDE EFFECTS:
; None
; RESTRICTIONS:
; The DustEM fortran code must be installed
; The DustEMWrap IDL code must be installed
; PROCEDURE:
; None
; EXAMPLES
; dustem_make_polarization_sed_example
; dustem_make_polarization_sed_example,model='G17_MODELD'
; MODIFICATION HISTORY:
; Written by JPB June-2022
; Evolution details on the DustEMWrap gitlab.
; See http://dustemwrap.irap.omp.eu/ for FAQ and help.
;-
IF keyword_set(help) THEN BEGIN
doc_library,'dustem_make_polarization_sed_example'
goto,the_end
ENDIF
dustem_define_la_common
IF keyword_set(model) THEN BEGIN
use_model=strupcase(model)
ENDIF ELSE BEGIN
use_model='G17_MODELD' ;Default is one of the Guillet et al (2017) models since they treat dust polarisation properties
ENDELSE
IF keyword_set(filters) THEN BEGIN
use_filters=strupcase(filters)
ENDIF ELSE BEGIN
use_filters=['IRAS1','IRAS2','IRAS3','IRAS4','PACS3','SPIRE1','SPIRE2','SPIRE3','HFI2','HFI3','HFI4','HFI5','HFI6','LFI1','LFI2','LFI3']
ENDELSE
IF keyword_set(outfile) THEN BEGIN
use_outfile=outfile
ENDIF ELSE BEGIN
use_outfile='./polarization_sed.xcat'
ENDELSE
known_mdls=['MC10','DBP90','DL01','WD01_RV5P5B','DL07','J13','G17_MODELA','G17_MODELB','G17_MODELC','G17_MODELD']
pol_mdls=['G17_MODELA','G17_MODELB','G17_MODELC','G17_MODELD']
test_model = where(known_mdls eq use_model,ct)
if ct eq 0 then begin
message,'ISM dust model '+use_model+' unknown',/continue
message,'Known models are MC10,DBP90,DL01,WD01_RV5P5B,DL07,J13,G17_MODELA,G17_MODELB,G17_MODELC,G17_MODELD',/continue
stop
end
test_model = where(pol_mdls eq use_model,ct)
if ct eq 0 then begin
message,'The only models with polarisation are G17_MODELA,G17_MODELB,G17_MODELC,G17_MODELD',/continue
stop
end
if keyword_set(verbose) then use_verbose=1
dustem_define_la_common
;dustem_init,mode=use_model,grain_keywords=['logn-chrg-spin','?','plaw-pol'],polarization=1
dustem_init,mode=use_model,polarization=1
!dustem_verbose=1
!dustem_show_plot=1
!dustem_nocatch=1
;=== initialize filters for the SED
Nfilt=n_elements(use_filters)
sed=dustem_initialize_sed(Nfilt)
sed.filter=use_filters
sed.wave=dustem_filter2wav(use_filters)
sed.instru=dustem_filter2instru(use_filters)
;=== initialize IQU and associated errors to avoid problems when checking SED in dustem_set_data.pro
sed[*].StokesI=1.
sed.StokesQ=sed.StokesI/100.
sed.StokesU=sed.StokesI/100.
sed.SigmaII=sed.StokesI/100.
sed.SigmaQQ=sed.StokesI/100.
sed.SigmaUU=sed.StokesI/100.
sed.SigmaIQ=sed.StokesI/100.
sed.SigmaIU=sed.StokesI/100.
sed.SigmaQU=sed.StokesI/100.
;=== initialize the !dustem_data structure that will be used internally
dustem_set_data,sed,sed
;help,!dustem_data
;=== Set which model parameters to use for the SED
pd = [ $
'(*!dustem_params).G0', $ ;G0
'(*!dustem_params).grains(0).mdust_o_mh',$ ;PAH0_MC10 mass fraction
'(*!dustem_params).grains(1).mdust_o_mh',$ ;amCBE_0.3333x mass fraction
'(*!dustem_params).grains(2).mdust_o_mh', $ ;aSil2001BE6pctG_0.4x mass fraction
'dustem_plugin_modify_dust_pol_2', $ ;Dust polarization angle
'dustem_plugin_synchrotron_1', $ ;Synchrotron spectra index
'dustem_plugin_synchrotron_2', $ ;Synchrotron amplitude at 10 mm
'dustem_plugin_synchrotron_3', $ ;Synchrotron polarization fraction
'dustem_plugin_synchrotron_4' $ ;Synchrotron polarization angle
]
pd_true=[1.,7.8000E-04,7.8000E-04,7.8000E-04, 10.,3., 1.e-2, 0.3, 45.]
Npar=n_elements(pd)
ulimed=replicate(0,Npar)
llimed=replicate(1,Npar)
llims=replicate(0,Npar)
dustem_init_params,use_model,pd,pd_true,pol=1
;dustem_init_parinfo,pd,pd_true,up_limited=ulimed,lo_limited=llimed,up_limits=ulims,lo_limits=llims
;dustem_init_plugins,pd
dustem_Ised=dustem_compute_sed(pd_true,ssti) ;sst is not set on purpose, for dustem_compute_sed to compute the sed using fortran code
toto=dustem_compute_stokes(pd_true,sstqu,dustem_Qsed,dustem_Used) ;this procedure also allows for the extraction of the spectra
;print,dustem_Qsed,dustem_Used
sed.stokesI=dustem_Ised
sed.stokesQ=dustem_Qsed
sed.stokesU=dustem_Used
;=== set arbitrary uncertainties to I,Q,U
sed.sigmaII=abs(sed.StokesI*0.000001)
sed.sigmaQQ=abs(sed.StokesQ*0.000001)
sed.sigmaUU=abs(sed.StokesU*0.000001)
sed.sigmaIQ=0.
sed.sigmaIU=0.
sed.sigmaQU=0.
;print,sed.stokesI,sed.stokesQ,sed.stokesU
;print,sed.sigmaII,sed.sigmaQQ,sed.sigmaUU
;==== fill in dependent columns of the SED.
sed=dustem_fill_sed_dependent_columns(sed)
;======== save the SED to a file
write_xcat,sed,use_outfile
message,'Wrote '+use_outfile,/continue
;======== move the file to the Data/EXAMPLE_OBSDATA/ subdirectory
;filename_final=!dustem_wrap_soft_dir+'/Data/EXAMPLE_OBSDATA/my_example_SED_###.xcat'
;str='cp '+use_outfile+' '+filename_final
;message,'Do '+str+' to make change permanent',/continue
the_end:
END