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Detailed Description of J/A+AS/126/267
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Individual files can be fetched (via http) from
here
or via ftp from: ftp://cdsarc.u-strasbg.fr/pub/cats/J/A+AS/126/267
The catalogue can be queried from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/A+AS/126/267
This standardized document follows the rules of the Standard Description for Astronomical Catalogues. For those having to work on this catalogue using FORTRAN programs, this ReadMe file can be transformed into a f77-compliant program which reads the files making up this catalogue, in two versions: either a f77 program loading whole files into arrays, or a f77-program reading each data file line by line.
J/A+AS/126/267 Atlas of Synthetic Spectra (Chavez+ 1997)
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An Atlas of high resolution synthetic spectra in the wavelength
region 4850-5400 A
Chavez M., Malagnini M. L., Morossi C.
<Astron. Astrophys. Suppl. Ser. 126, 267 (1997)>
=1997A&AS..126..267C
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ADC_Keywords: Spectroscopy ; Stars, late-type
Keywords: stars: atmospheres - stars: late-type
Description:
A library of 711 cool star synthetic spectra in the wavelength range
485-540nm is presented. The coverage in the parameter space span in
surface gravity from 1.0 to 5.0dex at a step of 0.5dex. The range in
effective temperature covers from 4000 to 6000K at a step of 250K plus
the spectra for 7000 and 8000K. The global chemical compositions are
[M/H]=-1.0, -0.5, 0.0, +0.1, +0.2, +0.3 and +0.5. The adopted value of
microturbulent velocity is 2km/s but for two sets of nine spectra
each. All the spectra are computed at a resolving power =250,000. For
each wavelength point the continuum and line blanketed absolute fluxes
per unit frequency are given.
File Summary:
FileName Lrecl Records Explanations
× ReadMe 80 . This file
× list.dat 48 711 Summary of spectra
× dat/* 0 711 Spectra
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 12 A12 --- File Filename (in subdirectory dat)
16- 19 I4 K Teff [3500/8000] Effective temperature
21- 24 F4.2 [cm/s2] logg [1/5] Surface gravity
26- 29 F4.1 --- [M/H] [-1/0.5] Metallicity
32- 34 F3.1 km/s Vtur [0/2] Turbulent velocity
36- 39 F4.2 --- L/H [1.25] Microturbulent parameter
42- 47 I6 --- RP [250000] Resolving power
Struture of the spectra (in dat/*):
The header in each spectrum (four lines) contains the values of effective
temperature, surface gravity, metallicity, microturbulent velocity,
convection parameter and resolving power.
The following lines have the format:
--------------------------------------------------------------
Records Format Units Label Explanations
--------------------------------------------------------------
1- 11 F11.3 0.1nm Lambda Wavelength (A)
13- 22 E10.4 10+23Jy f(nu) Line blanketed flux
24- 33 E10.4 10+23Jy Continuum Continuum flux
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Acknowledgements: Maria Lucia Malagnini
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(End) Patricia Bauer [CDS] 02-Oct-1997