Access to Astronomical Catalogues

J/A+AS/126/267      Atlas of Synthetic Spectra     (Chavez+ 1997)
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
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
      --------------------------------------------------------------

Acknowledgements: Maria Lucia Malagnini 

(End)                                          Patricia Bauer [CDS]  02-Oct-1997