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OBSERVED COMPOSITE SPECTRA OF ALPHA TRIANGULI AUSTRALIS
Assembled 12-5-95.

Alp TrA photometry file: photometry actually used to construct the spectrum.

 Name      FWHM    Mag.+/-Unc.   Eff Wvl   Eff Wvl    F-lam    Source
			         (Vega)    (star)    W/cm2/um
                                  (um)      (um)
 SAAO-L   0.5648  -1.338 0.008    3.475     3.463    2.45E-14  Carter 1994


 Spectral fragments and portions of these actually used in observed spectrum
 ("used" may include combination with other data where overlaps occur)

 Fragment   Reference    Total range    Start and stop    Average resolving
                            (um)       wavelengths (um)        power

 KAO-NIR        1         2.90- 5.51       2.90- 4.87           160
 KAO-5--9       2         4.94- 9.36       4.94- 8.97           190
 KAO-8--13      3         8.80-13.08         .....              250
 LRS            4         7.67-22.74       7.67-12.59            30
 KAO-Si:Bi      5        15.00-18.51         .....               80
 KAO-Si:P       6        21.90-27.08         .....              180
 LONG           7         1.25-35.00      11.00-35.00            --

 References:
 1,5,6. HIFOGS data of April 10 & 12, 1993 KAO flights [alp TrA/alp1 Cen] and
   [alp TrA/alp CMa].
 2,3. HIFOGS data of April 7, 1993 KAO flight [alp TrA/alp1 Cen] and
   [alp TrA/alp CMa].  The 5--9 um spectral ratio is additionally confirmed by
   HIFOGS data of July 22, 1994 KAO flight from Australia.
 4. LRS raw data extracted from "LRSVAX" Groningen archive at NASA-Ames
 7. Engelke Fn. used for T=4140K and ang. diam. of 12.40 mas (Harper 1992); we
   rescaled this to 9.55 mas.  This Engelke Function was locked to the
   photometrically scaled LRS spectrum by splicing and used to replace the
   observations from 11.00 um.  An error of 2.6% in EFn. due to effective
   temperature uncertainty was input for this fragment.


 INFORMATION ON SPLICES AND BIASES INCURRED

 Process                   Factor determined      +/-Bias (%)

 KAO-NIR cf. photometry        1.004                 0.74
 KAO-5--9 splice to NIR        1.050                 0.14
 LRS blue/red bias               --                  0.06
 LRS splice to KAO             1.009                 0.40
 Engelke Fn. splice to LRS     0.593                 0.78

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 Notes:
 1. Composite spectra are NOT tabulated at equal intervals of the wavelength,
    but rather at the wavelengths of the original model.
 2. In most cases "total uncertainty" is the error term most appropriate to
    use. It is the standard deviation of the spectral irradiance and includes
    the local and global biases.  Local and global biases are given as a
    percent of the irradiance.  The global bias does not contribute error to
    flux ratios or color measurements, and may, in those cases, be removed (in
    the RSS sense) from the total error.
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