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II/179 Southern Spectrophotometric Standards. I + II (Hamuy+ 1992,94)
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Southern Spectrophotometric Standards. I + II
Hamuy M., Walker A.R., Suntzeff N.B., Gigoux P., Heathcote S.R.,
Phillips M.M.
<Publ. Astron. Soc. Pacific 104, 533 (1992)>
<Publ. Astron. Soc. Pacific 106, 566 (1994)>
=1992PASP..104..533H
=1994PASP..106..566H
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ADC_Keywords: Spectrophotometry; Stars, standard
Description:
M. Hamuy, et al. have compiled their observations of secondary and
tertiary spectrophotometric standard stars for the southern
hemisphere in the wavelength range 3300-7550 Angstroms. The
observations were made using the RC spectrographs and CCD cameras
on the 1.5m and 4m telescopes at CTIO. The machine-readable files
contain monochromatic magnitudes vs. wavelength for 29 stars in
ASCII and 31 stars in FITS format.
Introduction:
The author's observations of secondary and tertiary southern
spectrophotometric standard stars have been used to generate
computer-readable files containing monochromatic magnitudes vs.
wavelength for the range 3300-7550 Angstroms. The authors modified
the monochromatic fluxes of the secondary standards according to
the calibration of Vega published in 1985 by D. S. Hayes, and
adjusted the zero point of their energy distributions by matching
their V(synthetic) magnitudes to the observed magnitudes. They
have used these adjusted secondary standards to calculate new
fluxes for the tertiary standards of Stone and Baldwin (1983).
The catalog consists of 29 files of blue magnitudes vs. wavelength and
30 files each which contain magnitude vs. wavelength for different
standard stars in the red and for the entire wavelength range. There
are an additional two stars, HR 1903 and HR 2421, for which the data
is only in FITS format. Information on the contents of the FITS files
is contained in the FITS headers of those files.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 70 91 List of stars contained in this catalog
cd32.dat 15 139 File for CD -32 9927
eg21.dat 15 135 File for EG 21
eg274.dat 15 138 File for EG 274
f110.dat 15 134 File for Fiege 110
f56.dat 15 137 File for Fiege 56
h600.dat 15 137 File for Hiltner 600
hr1544.dat 15 447 File for HR 1544
hr3454.dat 15 441 File for HR 3454
hr4468.dat 15 439 File for HR 4468
hr4963.dat 15 445 File for HR 4963
hr5501.dat 15 444 File for HR 5501
hr718.dat 15 446 File for HR 718
hr7596.dat 15 446 File for HR 7596
hr7950.dat 15 445 File for HR 7950
hr8634.dat 15 446 File for HR 8634
hr9087.dat 15 445 File for HR 9087
l1020.dat 15 137 File for LTT 1020
l1788.dat 15 137 File for LTT 1788
l2415.dat 15 136 File for LTT 2415
l3218.dat 15 134 File for LTT 3218
l377.dat 15 141 File for LTT 1377
l3864.dat 15 137 File for LTT 3864
l4364.dat 15 139 File for LTT 4364
l4816.dat 15 134 File for LTT 4816
l6248.dat 15 138 File for LTT 6248
l7379.dat 15 139 File for LTT 7379
l745.dat 15 73 File for LTT 745
l7987.dat 15 135 File for LTT 7987
l9239.dat 15 139 File for LTT 9239
l9491.dat 15 134 File for LTT 9491
cd32_b.dat 15 86 Blue file for CD -32 9927
eg21_b.dat 15 86 Blue file for EG 21
eg274_b.dat 15 86 Blue file for EG 274
f110_b.dat 15 86 Blue file for Fiege 110
f56_b.dat 15 86 Blue file for Fiege 56
h600_b.dat 15 86 Blue file for Hiltner 600
hr1544_b.dat 15 267 Blue file for HR 1544
hr3454_b.dat 15 267 Blue file for HR 3454
hr4468_b.dat 15 267 Blue file for HR 4468
hr4963_b.dat 15 267 Blue file for HR 4963
hr5501_b.dat 15 267 Blue file for HR 5501
hr718_b.dat 15 267 Blue file for HR 718
hr7596_b.dat 15 267 Blue file for HR 7596
hr7950_b.dat 15 267 Blue file for HR 7950
hr8634_b.dat 15 267 Blue file for HR 8634
hr9087_b.dat 15 267 Blue file for HR 9087
l1020_b.dat 15 86 Blue file for LTT 1020
l1788_b.dat 15 86 Blue file for LTT 1788
l2415_b.dat 15 86 Blue file for LTT 2415
l3218_b.dat 15 86 Blue file for LTT 3218
l377_b.dat 15 86 Blue file for LTT 1377
l3864_b.dat 15 86 Blue file for LTT 3864
l4364_b.dat 15 86 Blue file for LTT 4364
l4816_b.dat 15 86 Blue file for LTT 4816
l6248_b.dat 15 86 Blue file for LTT 6248
l7379_b.dat 15 86 Blue file for LTT 7379
l7987_b.dat 15 86 Blue file for LTT 7987
l9239_b.dat 15 86 Blue file for LTT 9239
l9491_b.dat 15 86 Blue file for LTT 9491
cd32_r.dat 15 83 Red file for CD -32 9927
eg21_r.dat 15 80 Red file for EG 21
eg274_r.dat 15 83 Red file for EG 274
f110_r.dat 15 78 Red file for Fiege 110
f56_r.dat 15 74 Red file for Fiege 56
h600_r.dat 15 74 Red file for Hiltner 600
hr1544_r.dat 15 277 Red file for HR 1544
hr3454_r.dat 15 246 Red file for HR 3454
hr4468_r.dat 15 244 Red file for HR 4468
hr4963_r.dat 15 272 Red file for HR 4963
hr5501_r.dat 15 272 Red file for HR 5501
hr718_r.dat 15 275 Red file for HR 718
hr7596_r.dat 15 275 Red file for HR 7596
hr7950_r.dat 15 274 Red file for HR 7950
hr8634_r.dat 15 275 Red file for HR 8634
hr9087_r.dat 15 274 Red file for HR 9087
l1020_r.dat 15 82 Red file for LTT 1020
l1788_r.dat 15 81 Red file for LTT 1788
l2415_r.dat 15 80 Red file for LTT 2415
l3218_r.dat 15 71 Red file for LTT 3218
l377_r.dat 15 85 Red file for LTT 1377
l3864_r.dat 15 74 Red file for LTT 3864
l4364_r.dat 15 76 Red file for LTT 4364
l4816_r.dat 15 71 Red file for LTT 4816
l6248_r.dat 15 82 Red file for LTT 6248
l7379_r.dat 15 83 Red file for LTT 7379
l745_r.dat 15 73 Red file for LTT 745
l7987_r.dat 15 79 Red file for LTT 7987
l9239_r.dat 15 83 Red file for LTT 9239
l9491_r.dat 15 78 Red file for LTT 9491
hr1903.fit 2880 3 FITS file for HR 1903
hr2421.fit 2880 3 FITS file for HR 2421
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- FileName Name of file (in directory) with intensities
14- 24 A11 --- Name Star name
28- 29 I2 h RAh Right Ascension 2000 (hours) (1)
31- 32 I2 min RAm Right Ascension 2000 (minutes) (1)
34- 37 F4.1 s RAs Right Ascension 2000 (seconds) (1)
39 A1 --- DE- Declination 2000 (sign) (1)
40- 41 I2 deg DEd Declination 2000 (degrees) (1)
43- 44 I2 arcmin DEm Declination 2000 (minutes) (1)
46- 47 I2 arcsec DEs ? Declination 2000 (seconds) (1)
50- 54 F5.2 mag Bmag ? B magnitude (1)
56- 60 F5.2 mag Vmag ? V magnitude (1)
62- 70 A9 --- SpType Spectral class (1)
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Note (1): values taken from the SIMBAD data-base
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Byte-by-byte Description of file: cd32.dat, eg21.dat, eg274.dat, f110.dat
Byte-by-byte Description of file: f56.dat, hr1544.dat, hr3454.dat, hr4468.dat
Byte-by-byte Description of file: hr4963.dat, hr5501.dat, hr718.dat, hr7596.dat
Byte-by-byte Description of file: hr7950.dat, hr8634.dat, hr9087.dat, l1020.dat
Byte-by-byte Description of file: l1788.dat, l2415.dat, l3218.dat, l377.dat
Byte-by-byte Description of file: l3864.dat, l4364.dat, l4816.dat, l6248.dat
Byte-by-byte Description of file: l7379.dat, l745.dat, l7987.dat, l9239.dat
Byte-by-byte Description of file: l9491.dat, cd32_b.dat, eg21_b.dat
Byte-by-byte Description of file: eg274_b.dat, f110_b.dat, f56_b.dat, h600_b.dat
Byte-by-byte Description of file: hr1544_b.dat, hr3454_b.dat, hr4468_b.dat
Byte-by-byte Description of file: hr4963_b.dat, hr5501_b.dat, hr718_b.dat
Byte-by-byte Description of file: hr7596_b.dat, hr7950_b.dat, hr8634_b.dat
Byte-by-byte Description of file: hr9087_b.dat, l1020_b.dat, l1788_b.dat
Byte-by-byte Description of file: l2415_b.dat, l3218_b.dat, l377_b.dat
Byte-by-byte Description of file: l3864_b.dat, l4364_b.dat, l4816_b.dat
Byte-by-byte Description of file: l6248_b.dat, l7379_b.dat, l7987_b.dat
Byte-by-byte Description of file: l9239_b.dat, l9491_b.dat, cd32_r.dat
Byte-by-byte Description of file: eg21_r.dat, eg274_r.dat, f110_r.dat
Byte-by-byte Description of file: f56_r.dat, h600_r.dat, hr1544_r.dat
Byte-by-byte Description of file: hr3454_r.dat, hr4468_r.dat, hr4963_r.dat
Byte-by-byte Description of file: hr5501_r.dat, hr718_r.dat, hr7596_r.dat
Byte-by-byte Description of file: hr7950_r.dat, hr8634_r.dat, hr9087_r.dat
Byte-by-byte Description of file: l1020_r.dat, l1788_r.dat, l2415_r.dat
Byte-by-byte Description of file: l3218_r.dat, l377_r.dat, l3864_r.dat
Byte-by-byte Description of file: l4364_r.dat, l4816_r.dat, l6248_r.dat
Byte-by-byte Description of file: l7379_r.dat, l745_r.dat, l7987_r.dat
Byte-by-byte Description of file: l9239_r.dat, l9491_r.dat
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Bytes Format Unit Label Explanations
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1- 5 I5 0.1nm lambda Central wavelength
7-12 F6.3 mag mag Monochromatic magnitude (see source reference)
14-15 I2 0.1nm del_lam Bandpass bandwidth
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FITS files:
The format of the two FITS files which are included, for HR 1903 and
HR 2421, is apparent from the headers --- note that the flux is not
expressed in monochromatic magnitudes in these files.
Remarks:
The computer-readable version of Southern Spectrophotometric
Standards. I corresponds to the contents of tables 13 and 14 in
the source reference (Hamuy et al. 1992). The HR stars are
secondary standards. The data provided are monochromatic
magnitudes for the ten secondary standards at steps of 16
Angstroms, which corresponds to the resolution of the authors'
1.5m spectra. The magnitudes are averages of all the observations
gathered for these stars. The published version of this data
contains error estimates and bandpasses flagged for the presence
of telluric features. This information is not part of the
computer-readable version.
The remaining files contain monochromatic magnitudes for the
tertiary standard stars calculated through 50 A bandpasses. As
with the secondary standard files, errors and telluric feature
flags which appear in the source reference are not part of the
computer-readable files. For this reason, researchers are
cautioned to review the source reference carefully before using
these data.
The only changes made to the files as received were right justify the
first column and align decimals in the second one. The FITS files,
which were also received, have been omitted if the ASCII file is
present.
Acknowledgments:
The staff of the ADC gratefully acknowledges the support of Dr. Mario
Hamuy in making the data files available for distribution. The fits
files have been included only for the records for which no ASCII data
are available. The first work on this catalog at the ADC was by James.
E. Gass who also wrote the first version of this document.
History:
The list of stars (file stars.dat) was added at CDS in July 1998,
using the SIMBAD data-base.
References:
Hayes, D. S. 1985, in Calibration of Fundamental Stellar
Quantities, ed. D. S.
Hayes, L. E. Pasinetti, and A. G. Davis Philip (Dordrecht,
Reidel), p. 225
Stone, R. P. S. 1977, =1977ApJ...218..767S
Stone, R. P. S., and Baldwin, J. A. 1983, =1983MNRAS.204..347S
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(End) Nancy G. Roman [NASA/ADC/SSDOO] 31-May-1995