OBSERVED COMPOSITE SPECTRA OF BETA PEG

Assembled 3-10-92.

Bet Peg photometry file: photometry actually used to construct the spectrum.

Name   FWHM  Mag.+/-Unc.  Eff Wvl  Eff Wvl    F-lam
		         (Vega)   (star)     W/cm2/um
      (um)                (um)     (um)
Kn    0.0488 -2.33 0.01   2.208    2.205     3.37E-13
Ln    0.1443 -2.49 0.01   3.782    3.763     5.11E-14
M     0.6677 -2.12 0.02   4.758    4.720     1.50E-14
8.7   1.1576 -2.39 0.01   8.753    8.727     1.77E-15
11.7  1.2008 -2.47 0.01  11.650   11.621     6.14E-16


Spectral fragments and portions of these actually used in observed spectrum

Fragment   Reference    Total range    Start and stop    Average resolving
			   (um)	       wavelengths (um)        power
NIR           1	        1.22- 5.70       1.22- 5.14             50
KAO-5-8       2	        5.23- 8.06       5.23- 8.06           65,100
8-13          3	        7.50-13.07       8.13-13.07          55,55,55
LRS           4	        7.67-22.74      13.10-21.00             30
LONG          5         1.25-35.00      19.45-35.00             --

References:
1. Strecker, Erickson, and Witteborn 1979, Ap.J. Suppl, 41, 501.
2. NASA-Ames data from August 5, 1986 KAO flight (Bet Peg cf. Alp Lyr) and
   from Nov. 27-28 and 28-29, 1990 KAO flights (Bet Peg cf. Alp Tau).
3. From UKIRT data of July 16, 1990 CGS3 data of M. Barlow (priv. comm. to MC),
   Mt Lemmon (Ames) data of Oct. 11 and 14, 1989 (Bet Peg cf. Alp Lyr),
   and UKIRT data of Oct. 5, 1990 (Bet Peg. cf. Alp Tau) from M. Barlow's
   CGS3 data (priv. comm. to MC) and previously defined Alp Tau 8-13 um data.
4. LRS raw data extracted from ``LRSVAX" Groningen archive at NASA-Ames
5. Engelke Fn. used for T=3600K (see Blackwell, Lynas-Gray, and Petford 1991,
   A&A, 245, 567) and ang. diam. of 16.727 mas; we rescaled this to 16.98 mas.
   This Engelke Function was locked to the photometrically scaled combination
   of 8-13 and LRS spectra by splicing and used to replace the observations
   from 19.45 um.  A conservative error of 6.0% in EFn. due to effective
   temperature uncertainty was input for this fragment



Information on splices and biases incurred

Process                  Factor determined       +/-Bias%
NIR cf. photometry           1.025                0.90
813 cf. photometry           1.029                0.64
LRS blue/red bias              --                 0.16
LRS splice to 813            0.995                0.01
KAO joint splice to
 NIR and merged 813/LRS      1.007                0.11
Engelke Fn. splice to
 combined 813/LRS            1.030                0.77

 ====================================================
 Notes:
 1. Template spectra are NOT tabulated at equal
    intervals of the wavelength, but rather at the
    wavelengths of the original measurements.
 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.
 ====================================================