dustem_make_polarization_sed_example.pro
4.3 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
PRO dustem_make_polarization_sed_example,model=model,help=help
;+
; 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 the dustem IDL/GDL wrapper.
; CATEGORY:
; Dustem
; CALLING SEQUENCE:
; dustem_make_polarization_sed_example[,model=][,/help]
; INPUTS:
; None
; OPTIONAL INPUT PARAMETERS:
; None
; OUTPUTS:
; None
; OPTIONAL OUTPUT PARAMETERS:
; None
; 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 idl wrapper must be installed
; PROCEDURE:
; None
; EXAMPLES
; dustem_make_polarization_sed_example
; dustem_make_polarization_sed_example,model='G17_MODELD'
; MODIFICATION HISTORY:
; Written by J.P. Bernard June 29th 2011
; see evolution details on the dustem cvs maintained at IRAP
; Contact J.-Ph. Bernard (Jean-Philippe.Bernard@cesr.fr) in case of problems.
;-
IF keyword_set(help) THEN BEGIN
doc_library,'dustem_fit_sed_polsed_readme'
goto,the_end
ENDIF
dustem_define_la_common
;=== initialise dustem
use_mode='G17_MODELC'
dustem_init,mode=use_mode,kwords=['logn-chrg-spin','plaw-pol','plaw-pol'],/pol
!dustem_verbose=1
!dustem_show_plot=1
!dustem_nocatch=1
;=== define filters for the SED
filters=['IRAS1','IRAS2','IRAS3','IRAS4','PACS3','SPIRE1','SPIRE2','SPIRE3','HFI2','HFI3','HFI4','HFI5','HFI6','LFI1','LFI2','LFI3']
Nfilt=n_elements(filters)
sed=dustem_initialize_sed(Nfilt)
sed.filter=filters
sed.wave=dustem_filter2wav(filters)
sed.instru=dustem_filter2instru(filters)
;=== initializing 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.
;=== initializing the !dustem_data structure that will be internally used
dustem_set_data,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 mass fraction
'(*!dustem_params).grains(1).mdust_o_mh',$ ;PAH0 mass fraction
'(*!dustem_params).grains(2).mdust_o_mh', $ ;PAH1 mass fraction
'dustem_plugin_modify_dust_pol_2', $ ;This will set the 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
]
p_truth=[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_parinfo,pd,p_truth,up_limited=ulimed,lo_limited=llimed,up_limits=ulims,lo_limits=llims
dustem_init_plugins,pd
dustem_Ised=dustem_compute_sed(p_truth,ssti) ;sst is not set on purpose, for dustem_compute_sed to compute the sed using fortran code
toto=dustem_compute_stokes(p_truth,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
filename='/tmp/fake_polarization_sed.xcat'
write_xcat,sed,filename
message,'Wrote '+filename,/continue
filename_final=!dustem_wrap_soft_dir+'/Data/EXAMPLE_OBSDATA/example_sed3.xcat'
str='cp '+filename+' '+filename_final
message,'Do '+str+' to make change permanent',/continue
the_end:
END