Документ взят из кэша поисковой машины. Адрес оригинального документа : http://kcor.sai.msu.ru/calc_kcor.pro Дата изменения: Tue Feb 12 02:03:27 2013 Дата индексирования: Thu Feb 27 19:52:23 2014 Кодировка: Поисковые слова: lightning

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; The K-corrections calculator in IDL. See http://kcor.sai.msu.ru for the
; reference. Available filter-colour combinations must be present in the
; keys of the 'coeff' structure.
;
; INPUT
; filter_name - name of the bandpass (string).
; At present, SDSS (ugriz), UKIRT WFCAM (YJHK),
; Johnson-Cousins (UBVRcIc), and 2MASS (J2H2Ks2)
; are supported
; redshift - redfshift of a galaxy (floating point)
; colour_name - colour identification (string)
; colour_value - value of colour in magnitudes (floating point)
; should be in the AB mags for ugrizYJHK
; and in Vega mags for Johnson-Cousins/2MASS colours
;
; RETURN VALUE: K-correction in the specified filter for given redshift
; and colour values (floating point)
;
; EXAMPLES OF USAGE:
; IDL> print,calc_kcor('g',0.15,'g - r',1.1)
; 0.481612
; IDL> print,calc_kcor('B',0.2,'B - Rc',1.4)
; 0.618700
;
; AUTHORS: I. Chilingarian, A.-L. Melchior and I. Zolotukhin (c)2010,2012
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

function calc_kcor_2012, filter_name, redshift, colour_name, colour_value

coeff = {$
B_BRc: [$
[0,0,0,0],$
[-1.99412,3.45377,0.818214,-0.630543],$
[15.9592,-3.99873,6.44175,0.828667],$
[-101.876,-44.4243,-12.6224,0],$
[299.29,86.789,0,0],$
[-304.526,0,0,0]$
],$
B_BIc: [$
[0,0,0,0],$
[2.11655 , -5.28948 , 4.5095 , -0.8891],$
[24.0499 , -4.76477 , -1.55617 , 1.85361],$
[-121.96 , 7.73146 , -17.1605 , 0],$
[236.222 , 76.5863 , 0 , 0],$
[-281.824 , 0 , 0 , 0]$
],$
H2_H2Ks2: [$
[0,0,0,0],$
[-1.88351,1.19742,10.0062,-18.0133],$
[11.1068,20.6816,-16.6483,139.907],$
[-79.1256,-406.065,-48.6619,-430.432],$
[551.385,1453.82,354.176,473.859],$
[-1728.49,-1785.33,-705.044,0],$
[2027.48,950.465,0,0],$
[-741.198,0,0,0]$
],$
H2_J2H2: [$
[0,0,0,0],$
[-4.99539,5.79815,4.19097,-7.36237],$
[70.4664,-202.698,244.798,-65.7179],$
[-142.831,553.379,-1247.8,574.124],$
[-414.164,1206.23,467.602,-799.626],$
[763.857,-2270.69,1845.38,0],$
[-563.812,-1227.82,0,0],$
[1392.67,0,0,0]$
],$
Ic_VIc: [$
[0,0,0,0],$
[-7.92467,17.6389,-15.2414,5.12562],$
[15.7555,-1.99263,10.663,-10.8329],$
[-88.0145,-42.9575,46.7401,0],$
[266.377,-67.5785,0,0],$
[-164.217,0,0,0]$
],$
J2_J2Ks2: [$
[0,0,0,0],$
[-2.85079,1.7402,0.754404,-0.41967],$
[24.1679,-34.9114,11.6095,0.691538],$
[-32.3501,59.9733,-29.6886,0],$
[-30.2249,43.3261,0,0],$
[-36.8587,0,0,0]$
],$
J2_J2H2: [$
[0,0,0,0],$
[-0.905709,-4.17058,11.5452,-7.7345],$
[5.38206,-6.73039,-5.94359,20.5753],$
[-5.99575,32.9624,-72.08,0],$
[-19.9099,92.1681,0,0],$
[-45.7148,0,0,0]$
],$
Ks2_J2Ks2: [$
[0,0,0,0],$
[-5.08065,-0.15919,4.15442,-0.794224],$
[62.8862,-61.9293,-2.11406,1.56637],$
[-191.117,212.626,-15.1137,0],$
[116.797,-151.833,0,0],$
[41.4071,0,0,0]$
],$
Ks2_H2Ks2: [$
[0,0,0,0],$
[-3.90879,5.05938,10.5434,-10.9614],$
[23.6036,-97.0952,14.0686,28.994],$
[-44.4514,266.242,-108.639,0],$
[-15.8337,-117.61,0,0],$
[28.3737,0,0,0]$
],$
Rc_BRc: [$
[0,0,0,0],$
[-2.83216,4.64989,-2.86494,0.90422],$
[4.97464,5.34587,0.408024,-2.47204],$
[-57.3361,-30.3302,18.4741,0],$
[224.219,-19.3575,0,0],$
[-194.829,0,0,0]$
],$
Rc_VRc: [$
[0,0,0,0],$
[-3.39312 , 16.7423 , -29.0396 , 25.7662 ],$
[5.88415 , 6.02901 , -5.07557 , -66.1624 ],$
[-50.654 , -13.1229 , 188.091 , 0 ],$
[131.682 , -191.427 , 0 , 0 ],$
[-36.9821 , 0 , 0 , 0 ]$
],$
U_URc: [$
[0,0,0,0],$
[2.84791,2.31564,-0.411492,-0.0362256],$
[-18.8238,13.2852,6.74212,-2.16222],$
[-307.885,-124.303,-9.92117,12.7453],$
[3040.57,428.811,-124.492,-14.3232],$
[-10677.7,-39.2842,197.445,0],$
[16022.4,-641.309,0,0],$
[-8586.18,0,0,0]$
],$
V_VIc: [$
[0,0,0,0],$
[-1.37734,-1.3982,4.76093,-1.59598],$
[19.0533,-17.9194,8.32856,0.622176],$
[-86.9899,-13.6809,-9.25747,0],$
[305.09,39.4246,0,0],$
[-324.357,0,0,0]$
],$
V_VRc: [$
[0,0,0,0],$
[-2.21628,8.32648,-7.8023,9.53426],$
[13.136,-1.18745,3.66083,-41.3694],$
[-117.152,-28.1502,116.992,0],$
[365.049,-93.68,0,0],$
[-298.582,0,0,0]$
],$
FUV_FUVNUV: [$
[ 0,0,0,0 ],$
[ -0.866758,0.2405,0.155007,0.0807314 ],$
[ -1.17598,6.90712,3.72288,-4.25468 ],$
[ 135.006,-56.4344,-1.19312,25.8617 ],$
[ -1294.67,245.759,-84.6163,-40.8712 ],$
[ 4992.29,-477.139,174.281,0 ],$
[ -8606.6,316.571,0,0 ],$
[ 5504.2,0,0,0 ]$
],$
FUV_FUVu: [$
[ 0,0,0,0 ],$
[ -1.67589,0.447786,0.369919,-0.0954247 ],$
[ 2.10419,6.49129,-2.54751,0.177888 ],$
[ 15.6521,-32.2339,4.4459,0 ],$
[ -48.3912,37.1325,0,0 ],$
[ 37.0269,0,0,0 ]$
],$
g_gi: [$
[ 0,0,0,0 ],$
[ 1.59269,-2.97991,7.31089,-3.46913 ],$
[ -27.5631,-9.89034,15.4693,6.53131 ],$
[ 161.969,-76.171,-56.1923,0 ],$
[ -204.457,217.977,0,0 ],$
[ -50.6269,0,0,0 ]$
],$
g_gz: [$
[ 0,0,0,0 ],$
[ 2.37454,-4.39943,7.29383,-2.90691 ],$
[ -28.7217,-20.7783,18.3055,5.04468 ],$
[ 220.097,-81.883,-55.8349,0 ],$
[ -290.86,253.677,0,0 ],$
[ -73.5316,0,0,0 ]$
],$
g_gr: [$
[ 0,0,0,0 ],$
[ -2.45204,4.10188,10.5258,-13.5889 ],$
[ 56.7969,-140.913,144.572,57.2155 ],$
[ -466.949,222.789,-917.46,-78.0591 ],$
[ 2906.77,1500.8,1689.97,30.889 ],$
[ -10453.7,-4419.56,-1011.01,0 ],$
[ 17568,3236.68,0,0 ],$
[ -10820.7,0,0,0 ]$
],$
H_JH: [$
[ 0,0,0,0 ],$
[ -1.6196,3.55254,1.01414,-1.88023 ],$
[ 38.4753,-8.9772,-139.021,15.4588 ],$
[ -417.861,89.1454,808.928,-18.9682 ],$
[ 2127.81,-405.755,-1710.95,-14.4226 ],$
[ -5719,731.135,1284.35,0 ],$
[ 7813.57,-500.95,0,0 ],$
[ -4248.19,0,0,0 ]$
],$
H_HK: [$
[ 0,0,0,0 ],$
[ 0.812404,7.74956,1.43107,-10.3853 ],$
[ -23.6812,-235.584,-147.582,188.064 ],$
[ 283.702,2065.89,721.859,-713.536 ],$
[ -1697.78,-7454.39,-1100.02,753.04 ],$
[ 5076.66,11997.5,460.328,0 ],$
[ -7352.86,-7166.83,0,0 ],$
[ 4125.88,0,0,0 ]$
],$
i_gi: [$
[ 0,0,0,0 ],$
[ -2.21853,3.94007,0.678402,-1.24751 ],$
[ -15.7929,-19.3587,15.0137,2.27779 ],$
[ 118.791,-40.0709,-30.6727,0 ],$
[ -134.571,125.799,0,0 ],$
[ -55.4483,0,0,0 ]$
],$
i_ui: [$
[ 0,0,0,0 ],$
[ -3.91949,3.20431,-0.431124,-0.000912813 ],$
[ -14.776,-6.56405,1.15975,0.0429679 ],$
[ 135.273,-1.30583,-1.81687,0 ],$
[ -264.69,15.2846,0,0 ],$
[ 142.624,0,0,0 ]$
],$
J_JH: [$
[ 0,0,0,0 ],$
[ 0.129195,1.57243,-2.79362,-0.177462 ],$
[ -15.9071,-2.22557,-12.3799,-2.14159 ],$
[ 89.1236,65.4377,36.9197,0 ],$
[ -209.27,-123.252,0,0 ],$
[ 180.138,0,0,0 ]$
],$
J_JK: [$
[ 0,0,0,0 ],$
[ 0.0772766,2.17962,-4.23473,-0.175053 ],$
[ -13.9606,-19.998,22.5939,-3.99985 ],$
[ 97.1195,90.4465,-21.6729,0 ],$
[ -283.153,-106.138,0,0 ],$
[ 272.291,0,0,0 ]$
],$
K_HK: [$
[ 0,0,0,0 ],$
[ -2.83918,-2.60467,-8.80285,-1.62272 ],$
[ 14.0271,17.5133,42.3171,4.8453 ],$
[ -77.5591,-28.7242,-54.0153,0 ],$
[ 186.489,10.6493,0,0 ],$
[ -146.186,0,0,0 ]$
],$
K_JK: [$
[ 0,0,0,0 ],$
[ -2.58706,1.27843,-5.17966,2.08137 ],$
[ 9.63191,-4.8383,19.1588,-5.97411 ],$
[ -55.0642,13.0179,-14.3262,0 ],$
[ 131.866,-13.6557,0,0 ],$
[ -101.445,0,0,0 ]$
],$
NUV_NUVr: [$
[ 0,0,0,0 ],$
[ 2.2112,-1.2776,0.219084,0.0181984 ],$
[ -25.0673,5.02341,-0.759049,-0.0652431 ],$
[ 115.613,-5.18613,1.78492,0 ],$
[ -278.442,-5.48893,0,0 ],$
[ 261.478,0,0,0 ]$
],$
NUV_NUVg: [$
[ 0,0,0,0 ],$
[ 2.60443,-2.04106,0.52215,0.00028771 ],$
[ -24.6891,5.70907,-0.552946,-0.131456 ],$
[ 95.908,-0.524918,1.28406,0 ],$
[ -208.296,-10.2545,0,0 ],$
[ 186.442,0,0,0 ]$
],$
r_gr: [$
[ 0,0,0,0 ],$
[ 1.83285,-2.71446,4.97336,-3.66864 ],$
[ -19.7595,10.5033,18.8196,6.07785 ],$
[ 33.6059,-120.713,-49.299,0 ],$
[ 144.371,216.453,0,0 ],$
[ -295.39,0,0,0 ]$
],$
r_ur: [$
[ 0,0,0,0 ],$
[ 3.03458,-1.50775,0.576228,-0.0754155 ],$
[ -47.8362,19.0053,-3.15116,0.286009 ],$
[ 154.986,-35.6633,1.09562,0 ],$
[ -188.094,28.1876,0,0 ],$
[ 68.9867,0,0,0 ]$
],$
u_ur: [$
[ 0,0,0,0 ],$
[ 10.3686,-6.12658,2.58748,-0.299322 ],$
[ -138.069,45.0511,-10.8074,0.95854 ],$
[ 540.494,-43.7644,3.84259,0 ],$
[ -1005.28,10.9763,0,0 ],$
[ 710.482,0,0,0 ]$
],$
u_ui: [$
[ 0,0,0,0 ],$
[ 11.0679,-6.43368,2.4874,-0.276358 ],$
[ -134.36,36.0764,-8.06881,0.788515 ],$
[ 528.447,-26.7358,0.324884,0 ],$
[ -1023.1,13.8118,0,0 ],$
[ 721.096,0,0,0 ]$
],$
u_uz: [$
[ 0,0,0,0 ],$
[ 11.9853,-6.71644,2.31366,-0.234388 ],$
[ -137.024,35.7475,-7.48653,0.655665 ],$
[ 519.365,-20.9797,0.670477,0 ],$
[ -1028.36,2.79717,0,0 ],$
[ 767.552,0,0,0 ]$
],$
Y_YH: [$
[ 0,0,0,0 ],$
[ -2.81404,10.7397,-0.869515,-11.7591 ],$
[ 10.0424,-58.4924,49.2106,23.6013 ],$
[ -0.311944,84.2151,-100.625,0 ],$
[ -45.306,3.77161,0,0 ],$
[ 41.1134,0,0,0 ]$
],$
Y_YK: [$
[ 0,0,0,0 ],$
[ -0.516651,6.86141,-9.80894,-0.410825 ],$
[ -3.90566,-4.42593,51.4649,-2.86695 ],$
[ -5.38413,-68.218,-50.5315,0 ],$
[ 57.4445,97.2834,0,0 ],$
[ -64.6172,0,0,0 ]$
],$
z_gz: [$
[ 0,0,0,0 ],$
[ 0.30146,-0.623614,1.40008,-0.534053 ],$
[ -10.9584,-4.515,2.17456,0.913877 ],$
[ 66.0541,4.18323,-8.42098,0 ],$
[ -169.494,14.5628,0,0 ],$
[ 144.021,0,0,0 ]$
],$
z_rz: [$
[ 0,0,0,0 ],$
[ 0.669031,-3.08016,9.87081,-7.07135 ],$
[ -18.6165,8.24314,-14.2716,13.8663 ],$
[ 94.1113,11.2971,-11.9588,0 ],$
[ -225.428,-17.8509,0,0 ],$
[ 197.505,0,0,0 ]$
],$
z_uz: [$
[ 0,0,0,0 ],$
[ 0.623441,-0.293199,0.16293,-0.0134639 ],$
[ -21.567,5.93194,-1.41235,0.0714143 ],$
[ 82.8481,-0.245694,0.849976,0 ],$
[ -185.812,-7.9729,0,0 ],$
[ 168.691,0,0,0 ]$
]$
}

tags = tag_names(coeff)
tag_col = strupcase(filter_name+'_'+strcompress(strjoin(strsplit(colour_name,'-',/extr)),/remove_all))

cidx = where(tags eq tag_col, ccnt)
if(ccnt ne 1 or redshift ge 0.5) then begin
message,'Fitting function not found or redshift is out of range',/inf
return,!values.f_nan
endif
c=coeff.(cidx)
s_c = size(c)

kcor=0.0

for i=0, s_c[1]-1 do begin
for j=0, s_c[2]-1 do begin
kcor = kcor+colour_value^i*redshift^j*c[i,j]
endfor
endfor

return, kcor

end