INFO ON STELLAR DATA

The star data files are:
fcd_34d241.dat
fhr1544.dat
fhr3454.dat
fltt1020.dat

I am giving you four of the so-called 'f' files ('f' denotes flux
calibrated).  The data you need are in the 1st and 2nd columns.  

Col l = the wavelength in angstroms.  
Col 2 = the flux density 1.e16*f_lambda 

The f_lambda are multiplied by the constant 1.e16.  You will want to
convert to actual f_lambda by dividing these values by 1.e16 Do not
worry about the other columns.

INFO ON VEGA DATA

The data re in the file:
alpha_lyr.dat

Col l = the wavelength in angstroms.  
Col 2 = the flux density f_lambda 

INFO ON FILTER DATA

The Johnson-Cousins filter data files are:
filter-Uband.dat
filter-Vband.dat
filter-Bband.dat
filter-Rband.dat
filter-Iband.dat

The Stromgren filter data files are:
filter-stromgren_b.dat
filter-stromgren_u.dat
filter-stromgren_v.dat
filter-stromgren_y.dat

for all files

Col 1 = wavelength in angstroms 
Col 2 = transmission at wavelength lambda

for these files, the peak transmission in 1.000, which means that the
response curves are NOT area normalized to unity!  Per the class
notes, you must account for that.