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|
subroutine smooth (line,ncall)
c******************************************************************************
c This subroutine prepares synthesis data for plotting by smoothing
c the data in various ways.
c******************************************************************************
implicit real*8 (a-h,o-z)
include 'Atmos.com'
include 'Linex.com'
include 'Pstuff.com'
include 'Equivs.com'
real*4 shortnum
character*5 abchars
character*4 isochars
c*****initialize parameters
write (abitle(1:400),1081)
write (isoitle(1:240),1082)
nsyn = 1
if (ncall .eq. 1) then
gaussflag = 'f'
rotateflag = 'f'
lorenflag = 'f'
macroflag = 'f'
if (choice .ne. 'l') addflux = 0.
endif
c*****on entering, figure out what kind of smoothing is desired, unless
c the default smoothing options have been set for first pass
if (line .gt. 0) then
2 write (array,1007)
istat = ivwrite (line,3,array,67)
write (array,1004)
istat = ivwrite (line+1,3,array,50)
array = 'What is your choice? '
nchars = 21
call getasci (nchars,line+2)
smtype = chinfo(1:1)
if (smtype.ne.'n' .and. smtype.ne.'g' .and.
. smtype.ne.'l' .and. smtype.ne.'v' .and.
. smtype.ne.'m' .and. smtype.ne.'c' .and.
. smtype.ne.'d' .and. smtype.ne.'r' .and.
. smtype.ne.'p') go to 2
endif
c if a user-specified variable Gaussian smoothing over the spectral range
c is called for, option 'p', branch to a different routine
if (smtype .eq. 'p') then
call vargauss (line+1)
return
endif
c*****rewind the unsmoothed and smoothed spectrum output
c files, and get the synthesis range parameters from the 'dump' file
rewind nf2out
rewind nf3out
do i=1,20
read (nf2out,1002) array
if (array(1:7).eq.'element' .or.
. array(1:7).eq.'Changin' .or.
. array(1:7).eq.'ALL abu' .or.
. array(1:7).eq.'Isotopi') then
cycle
elseif (array(1:7).eq.'MODEL: ') then
moditle(1:73) = array(8:80)
read (nf2out,*) start, sstop, step
kount = int((sstop - start + (step/4.0) )/step) + 1
exit
endif
enddo
c*****branch to the desired smoothing function
write (smitle,1010) smtype
ism = 11
if (smtype .eq. 'l') then
lorenflag = 't'
elseif (smtype .eq. 'g') then
gaussflag = 't'
elseif (smtype .eq. 'v') then
rotateflag = 't'
elseif (smtype .eq. 'c') then
rotateflag = 't'
gaussflag = 't'
elseif (smtype .eq. 'm') then
macroflag = 't'
elseif (smtype .eq. 'd') then
macroflag = 't'
gaussflag = 't'
elseif (smtype .eq. 'r') then
macroflag = 't'
rotateflag = 't'
gaussflag = 't'
endif
c*****compute a stellar rotational broadening function; this follows
c D. F. Gray, 1976, "The Obs. & Anal. of Stell. Phot", p394-9
if (rotateflag .eq. 't') then
32 array = 'GIVE THE STELLAR vsini [0.0]: '
nchars = 30
if (line .gt. 0) then
call getnum (nchars,line+2,vsini,shortnum)
if (vsini .eq. -9999.) vsini = 0.
endif
if (vsini .lt. 0.0) go to 32
write (smitle(ism+1:ism+13),1011) vsini
ism = ism + 13
31 array = 'GIVE THE LIMB DARKENING COEFFICIENT [0.0]: '
nchars = 43
if (line .gt. 0) then
call getnum (nchars,line+2,limbdark,shortnum)
if (limbdark .eq. -9999.) limbdark = 0.
endif
if (limbdark .lt. 0.0) go to 31
write (smitle(ism+1:ism+13),1012) limbdark
ism = ism + 13
dlamlim = (start+sstop)/2.*vsini/3.0e5
if (step .ge. dlamlim) then
rotateflag = 'f'
else
pi = 3.141527
bottom = dlamlim*pi*(1.-limbdark/3.)
c1 = 2.*(1.-limbdark)/bottom
c2 = 0.5*limbdark*pi/bottom
prot0 = c1 + c2
powerrot = prot0
jdelrot = idint(dlamlim/step)
if (jdelrot .gt. 1000) then
write (*,1026)
smtype = 'e'
return
elseif (jdelrot .gt. kount/4) then
write (*,1028)
smtype = 'e'
return
endif
do i=1,jdelrot
dlam = (i-1)*step
term = 1. - (dlam/dlamlim)**2
prot(i) = c1*dsqrt(term) + c2*term
powerrot = powerrot + 2.0*prot(i)
enddo
endif
endif
c*****compute a macroturbulent smoothing function (uses subroutine vmacro)
if (macroflag .eq. 't') then
51 array = 'GIVE THE MACROTURBULENT VELOCITY [0.0]: '
nchars = 39
if (line .gt. 0) then
call getnum (nchars,line+2,vmac,shortnum)
if (vmac .eq. -9999.) vmac = 0.
endif
if (vmac .lt. 0.0) go to 51
write (smitle(ism+1:ism+13),1013) vmac
ism = ism + 13
if (vmac .eq. 0.) then
macroflag = 'f'
else
wavemac = (start+sstop)/2.*vmac/3.0e5
powermac = 1.0
do i=1,1000
wavei = step*i/wavemac
pmac(i) = vmacro(wavei)
powermac = powermac + 2.0 *pmac(i)
if (pmac(i) .lt. 0.002) then
jdelmac = i
exit
endif
enddo
if (jdelmac .gt. 1000) then
write (*,1025) wavemac
smtype = 'e'
return
elseif (jdelmac .gt. kount/4) then
write (*,1022)
smtype = 'e'
return
endif
endif
endif
c*****compute a Gaussian smoothing function
if (gaussflag .eq. 't') then
11 array = 'GIVE THE FWHM OF THE GAUSSIAN FUNCTION [0.0]: '
nchars = 46
if (line .gt. 0) then
call getnum (nchars,line+2,fwhmgauss,shortnum)
if (fwhmgauss .eq. -9999.) fwhmgauss = 0.
endif
if (fwhmgauss .lt. 0.0) go to 11
write (smitle(ism+1:ism+18),1014) fwhmgauss
ism = ism + 18
if (fwhmgauss .eq. 0.) then
gaussflag = 'f'
else
sigma = fwhmgauss/2.
aa = 0.6932/sigma**2
power = 1.0
do i=1,1000
p(i) = dexp(-aa*(step*i)**2 )
power = power + 2*p(i)
if (p(i) .lt. 0.02) then
jdel = i
exit
endif
enddo
if (jdel .gt. 1000) then
write (*,1029) sigma
smtype = 'e'
return
elseif (jdel .gt. kount/4) then
write (*,1021)
smtype = 'e'
return
endif
endif
endif
c*****compute a Lorenzian smoothing function
if (lorenflag .eq. 't') then
21 array = 'GIVE THE FWHM OF THE LORENTZIAN FUNCTION [0.0]: '
nchars = 48
if (line .gt. 0) then
call getnum (nchars,line+2,fwhmloren,shortnum)
if (fwhmloren .eq. -9999.) fwhmloren = 0.
endif
if (fwhmloren .lt. 0.0) go to 21
write (smitle(ism+1:ism+20),1015) fwhmloren
ism = ism + 20
if (fwhmloren .eq. 0.) then
lorenflag = 'f'
else
sigma = fwhmloren/2.
power = 1.0
do i=1,1000
p(i) = ((sigma**2)/((sigma**2)+((step*i)**2)))
power = power + 2.0 *p(i)
if (p(i) .lt. 0.02) then
jdel = i
exit
endif
enddo
if (jdel .gt. 1000) then
write (*,1030) sigma
smtype = 'e'
return
elseif (jdel .gt. kount/4) then
write (*,1031)
smtype = 'e'
return
endif
endif
endif
c*****finally there is a big loop that will read in the raw synthetic spectra,
c*****beginning with grabbing the information that appears before the array
c*****spectrum depth array, Note that after the depth array is input, the
c*****code will flip to a flux scale
rewind nf2out
do nsyn=1,100
c*****here is the reading/grabbing of stuff preceding the depth array:
naboff = 80*(nsyn-1)
nabunds = 0
nisos = 0
do i=1,20
read (nf2out,1002,end=2000) array
if (array(1:7).eq.'ALL abu') then
cycle
elseif (array(1:7).eq.'Changin') then
abitle (naboff+1:naboff+23) = '[M/H] FOR ALL ELEMENTS:'
abitle (naboff+24:naboff+29) = array(32:37)
cycle
elseif (array(1:7).eq.'element') then
nabunds = nabunds + 1
if (control .eq. 'binary ') then
if (nabunds .le. 5) then
ioff = naboff + 16*(nabunds-1)
abitle(ioff+1:ioff+2) = array(9:10)
abitle(ioff+3:ioff+14) = array(26:37)
abitle(ioff+15:ioff+16) = ' '
endif
else
if (nabunds .le. 8) then
ioff = naboff + 9*(nabunds-1)
abitle(ioff+1:ioff+2) = array(9:10)
read (array(26:32),*) abnum
if (abnum .gt. 0) then
write (abchars,1061) abnum
elseif (abnum .le. -10.) then
write (abchars,1062) abnum
else
write (abchars,1063) abnum
endif
abitle(ioff+3:ioff+7) = abchars
abitle(ioff+8:ioff+9) = ' '
endif
endif
cycle
elseif (array(1:7).eq.'Isotopi') then
nisos = nisos + 1
if (nisos .le. 6) then
read (array(37:46),1050) ratio
if (ratio .ge. 1000.) then
write (isochars,1054) int(ratio)
elseif (ratio .ge. 100.) then
write (isochars,1051) ratio
elseif (ratio .ge. 10.) then
write (isochars,1052) ratio
else
write (isochars,1053) ratio
endif
if (nsyn .eq. 1) then
ioff = 40*(nisos-1) + 5*(nsyn-1)
isoitle(ioff+1:ioff+10) = array(23:32)
isoitle(ioff+11:ioff+12) = ': '
isoitle(ioff+13:ioff+16) = isochars(1:4)
isoitle(ioff+17:ioff+17) = '/'
else
ioff = 12 + 40*(nisos-1) + 5*(nsyn-1)
isoitle(ioff+1:ioff+4) = isochars(1:4)
isoitle(ioff+5:ioff+5) = '/'
endif
endif
elseif (array(1:7).eq.'MODEL: ') then
read (nf2out,1002) array
exit
endif
enddo
c*****here is the actual reading of the depth array
read (nf2out,1003,end=2000) (y(i),i=1,kount)
do i=1,kount
y(i) = 1.0 - y(i)
enddo
c*****here a veiling addition can be added in
if (addflux .gt. 0.0) then
do i=1,kount
y(i) = (y(i) + addflux)/(1.0+addflux)
enddo
endif
c*****apply the rotational broadening if desired
if (rotateflag .eq. 't') then
min = jdelrot + 1
max = kount - jdelrot
do i=1,jdelrot
z(i) = 1.
z(kount-i+1) = 1.
enddo
do i=min,max
z(i) = prot0*y(i)
do j=1,jdelrot
z(i) = z(i) + prot(j)*(y(i-j) + y(i+j))
enddo
z(i) = z(i)/powerrot
enddo
do i=1,kount
y(i) = z(i)
enddo
endif
c*****apply the macroturbulent broadening if desired
if (macroflag .eq. 't') then
min = jdelmac + 1
max = kount - jdelmac
do i=1,jdelmac
z(i) = 1.
z(kount-i+1) = 1.
enddo
do i=min,max
z(i) = y(i)
do j=1,jdelmac
z(i) = z(i) + pmac(j)*(y(i-j) + y(i+j))
enddo
z(i) = z(i)/powermac
enddo
do i=1,kount
y(i) = z(i)
enddo
endif
c*****apply the Gaussian or Lorenzian smoothing if desired (this
c is an either/or situation; only one of these can apply.
if (gaussflag .eq. 't' .or. lorenflag .eq. 't') then
min = jdel + 1
max = kount - jdel
do i=1,jdel
z(i) = 1.
z(kount-i+1) = 1.
enddo
do i=min,max
z(i) = y(i)
do j=1,jdel
z(i) = z(i) + p(j)*(y(i-j) + y(i+j))
enddo
z(i) = z(i)/power
enddo
do i=1,kount
y(i) = z(i)
enddo
endif
c*****move the smoothed spectrum (or unsmoothed, if nothing has
c been done to the y-array) into the appropriate array
do i = 1,kount
chunk(i,nsyn) = y(i)
enddo
c*****compute the wavelength array; must be done for each synthetic
c spectrum because of the way the equivalences were set up
if (iunits .eq. 1) then
do i=1,kount
xsyn(i) = 1.d-4*(start + (i-1)*step)
enddo
else
do i=1,kount
xsyn(i) = start + (i-1)*step
enddo
endif
c*****dump the smoothed spectrum in a MONGO-style set of
c (wavelength,flux) point pairs
write (nf3out,1005) kount,start,sstop,step
if (xsyn(1) .le. 100.0) then
write (nf3out,1009) (xsyn(i),chunk(i,nsyn),i=1,kount)
else
write (nf3out,1008) (xsyn(i),chunk(i,nsyn),i=1,kount)
endif
enddo
c*****exit the routine normally
2000 nsyn = nsyn - 1
return
c*****a problem has developed in user-specified parameter (like a Gaussian
c FWHM being too big); print out a warning and let user decide what
c to do next
c*****format statements
1002 format (a80)
1003 format (10f7.4)
1004 format (' c=v+g, d=m+g, r=m+v+g, p=VARIABLE GAUSS')
1005 format ('the number of points per synthesis = ',i5/
. 'start = ',f10.3,5x,'stop = ',f10.3,5x,'step = ',f10.3)
1007 format ('SMOOTHING: n=NONE, g=GAUSS, l=LORENZ, ',
. 'v=ROTATION, m=MACROTURBULENCE')
1008 format (f10.3,' ',f10.5)
1009 format (f10.6,' ',f10.5)
1010 format ('smoothing=',a1,69x)
1011 format (' Vsini=',f5.1)
1012 format (' L.D.C.=',f4.2)
1013 format (' Vmacro=',f4.1)
1014 format (' FWHMgauss=',f6.3)
1015 format (' FWHMlorentz=',f6.3)
1021 format ('ERROR: GAUSSIAN PROFILE COVERS WHOLE ',
. 'SPECTRUM!'/
. ' INCREASE SYNTHESIS LENGTH OR DECREASE ',
. 'STEP SIZE?')
1022 format ('ERROR: MACROTURBULENT PROFILE COVERS WHOLE ',
. 'SPECTRUM!'/
. ' INCREASE SYNTHESIS LENGTH OR DECREASE ',
. 'STEP SIZE?')
1025 format ('ERROR: MACROTURBULENT PROFILE TOO BIG! ',
. '(WAVELENGTH WIDTH=',f6.2,')'/
. ' INCREASE SPECTRUM STEP SIZE?')
1026 format ('ERROR: ROTATIONAL PROFILE TOO BIG!'/
. ' INCREASE SPECTRUM STEP SIZE?')
1028 format ('ERROR: ROTATIONAL PROFILE COVERS WHOLE ',
. 'SPECTRUM!'/
. ' INCREASE SYNTHESIS LENGTH OR DECREASE ',
. 'STEP SIZE?')
1029 format ('ERROR: GAUSSIAN PROFILE TOO BIG! ',
. '(HALF WIDTH=',f6.2,')'/
. ' INCREASE SPECTRUM STEP SIZE?')
1030 format ('ERROR: LORENZIAN PROFILE TOO BIG! ',
. '(HALF WIDTH=',f6.2,')'/
. ' INCREASE SPECTRUM STEP SIZE?')
1031 format ('ERROR: LORENZIAN PROFILE COVERS WHOLE ',
. 'SPECTRUM!'/
. ' INCREASE SYNTHESIS LENGTH OR DECREASE ',
. 'STEP SIZE?')
1050 format (f10.3)
1051 format (f4.0)
1052 format (f4.1)
1053 format (f4.2)
1054 format (i4)
1061 format ('+', f4.2)
1062 format (f5.1)
1063 format (f5.2)
1081 format (400(' '))
1082 format (240(' '))
end
|
