The CTIO group headed by M. Hamuy have obtained new observations of 10 secondary spectrophotometric standards (from Taylor, ApJS, 54, 259, 1984) and 19 tertiary spectrophotometric standards from the lists of Stone and Baldwin (MNRAS, 204, 347, 1983) and Stone (ApJ, 218,767, 1977).Two papers detail the observations: the first is devoted to wavelengths from 3300 to 7550Å (Hamuy et al., PASP, 104, 533, 1992); the second to wavelengths from 6000 to 10500Å (Hamuy et al., PASP, 106,566, 1994). The second paper consolidates both sets of observations and presents AB magnitudes for the 10 secondary standards at 16Å intervals from 3300 to about 10400Å and for the 19 tertiary standards at 50Å intervals from 3300 to about 10300Å. The ABMAG is converted to flux (ergs/cm/cm/s/A)  through the formula
ABMAG = -2.5 alog10(Fnu) - 48.59
where Fnu is in ergs/cm/cm/s/Hz.

                      Secondary Standard Stars

 

  HR       Star       MK Type     (U-B)   (B-V)    V    (V-R)KC (V-I)KC

----------------------------------------------------------------------

  718    Xi2 Cet      B9 III     -O.107  -0.056  4.279  -0.023  -0.063 

 1544    Pi2 Ori      Al V                0.01   4.355   0.014   0.039 

 3454    Eta Hya      B3 V       -0.743  -0.200  4.295  -0.083  -0.200 

 4468    Theta Crt    B9.5 V     -0.18   -0.07   4.700  -O.023  -0.063 

 4963    Theta Vir    A1 IV      -O.01   -O.00   4.375   O.003   O.010 

 5501    108 Vir      B9.5 V     -0.080  -0.023  5.681   O.004  -O.026 

 7001    Alpha Lyr    AO V        0.00    0.00   0.03   -0.037  -0.045

 7596    58 Aql       AO II1     -0.01    0.10   5.62

 7950    Epsilon Aqr  A1 V        0.029  -0 001  3.778  -0.005  -0.010 

 8634    Zeta Peg     B8 V       -0.24   -0.09   3.40   -0.037  -0.079

 9087    29 Psc       B7 III-IV  -O.5O1  -O.136  5.120  -0.052  -O.122 



                           Tertiary Standard Stars



 Star        alpha (2000.0) delta Type  (U-B)   (B-V)    V    (V-R)KC (R-I)KC  n  PM(RA) PM(Dec)

                                                                                    ("/yr)

------------------------------------------------------------------------------------------------

 CD-34 241   00:41:46.9 -33:39:09  f   -0.065  +0.478  11.229  +0.295  +0.289  4  -0.45 -0.25

 LTT 1020    01:54:49.7 -27:28:29  g   -0.186  +0.557  11.522  +0.361  +0.364  4   0.33 -0.21

 EG 21       03:10:30.4 -68:36:05  DA  -0.661  +0.039  11.379  -0.093  -0.064  3   0.00 -0.30

 LTT 1788    03:48:22.2 -39:08:35  f   -0.281  +0.469  13.155  +0.317  +0.332  3   0.24 -0.19

 LTT 2415    05:56:24.2 -27:51:26      -0.215  +0.400  12.214  +0.267  +0.293  3   0.30 -0.18

 Hiltner 600 06:45:13.5 +02:08:15  B1  -0.574  +0.179  10.441  +0.120  +0.140  2     

 LTT 3218    08:41:32.4 -32:56:33  DA  -0.547  +0.220  11.858  +0.096  +0.111  4  -1.10  1.34

 LTT 3864    10:32:13.8 -35:37:42  f   -0.167  +0.495  12.171  +0.323  +0.329  3  -0.34 -0.01

 LTT 4364    11:43:36.6 -64:50:24  C2  -0.664  +0.162  11.504  +0.173  +0.127  1   6.19 -0.33

 Feige 56    12:06:47.3 +11:40:13  B5p  

 LTT 4816    12:38:50.7 -49:47:58  DA  -0.656  +0.166  13.794  +0.013  +0.027  2  -0.86 -0.13

 CD -32d9927 14:11:46.3 -33:03:15  AO                                              0.01 -0.02

 LTT 6248    15:38:59.8 -28:35:34  a   -0.197  +0.491  11.797  +0.319  +0.345  1  -0.25 -0.18

 EG 274      16:23:33.7 -39:13:48  DA  -0.969  -0.144  11.029  -0.093  -0.096  1   0.10 -0.01

 LTT 7379    18:36:26.2 -44:18:37  GO  -0.020  +0.605  10.225  +0.366  +0.366  6  -0.22 -0.16

 LTT 7987    20:10:57.1 -30:13:03  DA  -0.670  +0.046  12.230  -0.062  -0.078  2  -0.43 -0.24

 LTT 9239    22:52:40.9 -20:35:27  f   -0.110  +0.609  12.068  +0.397  +0.372  2   0.10 -0.33

 Feige 110   23:19:58.3 -05:09:56  sdO    

 LTT 9491    23:19:35.2 -17:05:28  DC  -0.843  +0.007  14.112  +0.045  +0.031  4   0.27  0.05

Notes
CD-34 241: This star is mistakenly named LTT 377 in Hamuy et al. (1992 & 1994)
Feige 56: The coordinates of Feige 56 are given incorrectly in Table 7 of Hamuy et al. 1992.