Two families of standard illuminants that depend on temperature are the Planckian spectra (blackbody spectra), and daylight spectra. For the daylight spectra, a smoothed version is available. Illuminant E, a third and trivial spectrum, is also available.
1 2 3 4 5 6  planckSpectra( temperature, normalize=TRUE, wavelength=300:830 )
daylightSpectra( temperature, components=colorSpec::daylight1964,
wavelength=NULL, roundMs=FALSE )
illuminantE( power=1, wavelength=380:780 )

temperature 
a vector of temperatures, in Kelvin 
components 
a colorSpec object with the daylight components S_0, S_1, and S_2.
The default is 
wavelength 
a vector of wavelengths. For 
normalize 
a logical value.
If 
roundMs 
a logical value. The original CIE method for the daylight spectra requires rounding intermediate coefficients M1 and M2 to 3 decimal places. This rounding is necessary to reproduce the tabulated values in Table T.1 of the CIE publication in References. 
power 
a vector of power levels 
For daylightSpectra
the valid range of temperatures is 4000 to 25000 K.
For a temperature outside this range the spectrum is set to all NA
s.
The equations for daylightSpectra
and planckSpectra
are complex
and can be found in the References.
IlluminantE
is trivial  all constant power
.
For planckSpectra
and daylightSpectra
:
A colorSpec object with quantity
equal to 'power'
,
and organization
equal to 'matrix'
or 'vector'
.
The specname
s are PNNNN
or DNNNN
for planckSpectra
and daylightSpectra
respectively.
The number of spectra in the object is the number of temperatures = length(temperature)
.
For illuminantE
:
A colorSpec object with quantity
equal to 'power'
.
The number of spectra in the object is the number of power levels = length(power)
.
Günther Wyszecki and W.S. Stiles. Color Science : Concepts and Methods, Quantitative Data and Formulae. Second Edition. WileyInterscience. 1982. page 146.
CIE 15: Technical Report: Colorimetry, 3rd edition. CIE 15:2004. Table T.1, pp 3032, and Note 5 on page 69.
Schanda, Janos. CIE Colorimetry, in Colorimetry: Understanding the CIE System. Wiley Interscience. 2007. p. 42.
daylight, resample
, organization
, quantity
,
materialSpectra
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