Hamuy Spectrophotometric Standards

M. Hamuy led a group at CTIO to obtain observations of 10 secondary spectrophotometric standards standards from Taylor (1984) and 19 tertiary spectrophotometric standards from Stone & Baldwin (1983) and Stone (1977).  These results were published in two papers: (1) Hamuy et al. (1992) and Hamuy et al. (1994).  The former paper covers wavelengths from 3300Å to 7550Å and the latter paper covers from 6000Å to 10500Å.  The latter paper also combines both sets of observations and presents AB magnitudes for the 10 secondary standards at 16Å intervals from 3300Å to 10400Å and for the 19 tertiary standards at 50Å intervals from 3300Å to 10300Å.  The AB magnitudes are converted to flux (erg cm-2 s-1 Å-1) using the formula

AB Mag = -2.5 alog10(F) - 48.59 where F is in erg cm-2 s-1 Hz-1.

 

Hamuy Spectrophotometric Standards1
Star RA2
(J2000)
DEC2
(J2000)
Type (U-B) (B-V) V (V-RKC) (R-I)KC PM RA
(" yr-1)
PM DEC
(" yr-1)
Plots3
CD -34 241 00:41:46.9 -33:39:09 f -0.065 +0.478 11.229 +0.295 +0.289 -0.45 -0.25 DSS Blue
DSS Red
Spectrum
LTT 1020 01:54:49.7 -27:28:29 g -0.186 +0.557 11.522 +0.361 +0.364 0.33 -0.21 DSS Blue
DSS Red
Spectrum
EG 21 03:10:30.4 -68:36:05 DA -0.661 +0.039 11.379 -0.093 -0.064 0.00 -0.30 DSS Blue
DSS Red
Spectrum
LTT 1788 03:48:22.2 -39:08:35 f -0.281 +0.469 13.155 +0.317 +0.332 0.24 -0.19 DSS Blue
DSS Red
Spectrum
LTT 2415 05:56:24.2 -27:51:26 ... -0.215 +0.400 12.214 +0.267 +0.293 0.30 -0.18 DSS Blue
DSS Red
Spectrum
Hiltner 600 06:45:13.5 +02:08:15 B1 -0.574 +0.179 10.441 +0.120 +0.140 ... ... DSS Blue
DSS Red
Spectrum
LTT 3218 08:41:32.4 -32:56:33 DA -0.574 +0.220 11.858 +0.096 +0.111 -1.10 1.34 DSS Blue
DSS Red
Spectrum
LTT 3864 10:32:13.8 -35:37:42 f -0.167 +0.495 12.171 +0.323 +0.329 -0.34 -0.01 DSS Blue
DSS Red
Spectrum
LTT 4364 11:45:42.9 -64:50:29 C2 -0.664 +0.162 11.504 +0.173 +0.127 6.19 -0.33 DSS Blue
DSS Red
Spectrum
Feige 56 12:06:47.3 +11:40:13 B5p ... ... ... ... ... ... ... DSS Blue
DSS Red
Spectrum
LTT 4816 12:38:50.7 -49:47:58 DA -0.656 +0.166 13.794 +0.013 +0.027 -0.86 -0.13 DSS Blue
DSS Red
Spectrum
CD -32 9927 14:11:46.3 -33:03:15 A0 ... ... ... ... ... 0.01 -0.02 DSS Blue
DSS Red
Spectrum
LTT 6248 15:38:59.8 -28:35:34 a 0.029 +0.491 11.797 +0.319 +0.345 -0.25 -0.18 DSS Blue
DSS Red
Spectrum
EG 274 16:23:33.7 -39:13:48 DA -0.969 -0.144 11.029 -0.093 -0.096 0.10 -0.01 DSS Blue
DSS Red
Spectrum
LTT 7379 18:36:26.2 -44:18:37 G0 -0.020 +0.605 10.225 +0.366 +0.366 -0.22 -0.16 DSS Blue
DSS Red
Spectrum
LTT 7987 20:10:57.1 -30:13:03 DA -0.670 +0.046 12.230 -0.062 -0.078 -0.43 -0.24 DSS Blue
DSS Red
Spectrum
LTT 9239 22:52:40.9 -20:35:27 f -0.110 +0.609 12.068 +0.397 +0.372 0.10 -0.33 DSS Blue
DSS Red
Spectrum
Feige 110 23:19:58.3 -05:09:56 sd0 ... ... ... ... ... ... ... DSS Blue
DSS Red
Spectrum
LTT 9491 23:19:35.2 -17:05:28 DC -0.843 +0.007 14.112 +0.045 +0.031 0.27 0.05 DSS Blue
DSS Red
Spectrum

1The data in this table are taken from Hamuy et al. (1992).
2The J200 coordinates of the standards were measured from the Digital Sky Survey images.
3The finding charts were made using Digital Sky Survey data. The survey information and emulsion and blocking filters used for the images are given in the finding charts. The spectral plots were made using the ASCII text files from the IRAF NOAO 1-D Standards library "ctionewcal".