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III/153     An Atlas of Near Infrared Stellar Spectra    (Arnaud+ 1989)
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An Atlas of Stellar Spectra between 2.00 and 2.45 micrometers
   Arnaud K.A., Gilmore G., Collier C.A.
   <Mon. Not. Roy. Astron. Soc. 237, 495, (1989)>
   =1989MNRAS.237..495A
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ADC_Keywords: Spectra, infrared; Spectrophotometry

Abstract:
   The atlas represents a collection of spectra in the wavelength
   range 2.00 to 2.45 micrometers having a resolution of approximately
   0.02 micrometers. The sample of 73 stars includes a supergiant,
   giants, dwarfs, and subdwarfs with a chemical abundance range of
   about -2 to +0.5 dex.

Introduction:
   An Atlas of Stellar Spectra between 2.00 and 2.45 micrometers
   contains digital spectra for a sample of 73 stars of various
   temperature classes of F and later, most luminosity
   classifications, and a range of abundances. A majority of the
   spectra were obtained with the UKIRT, while some observations were
   collected with the Mount Hopkins MMT. The UKIRT provided a 59-point
   spectrum from 2.004 to 2.451 micrometers and the MMT gave a
   30-point spectrum from 2.001 to 2.431 micrometers.

   This documentation should be used only to supplement the
   information contained in the source reference, which should be
   consulted for details regarding the impetus for the work, the
   selection of standard stars, the observational procedures, and the
   technique of data reduction. The source reference also contains a
   full listing of the observed stars and a table of flux standards
   used. Graphical presentations of all spectra are also given in the
   body of the paper, while the digital spectra are listed on a
   microfiche card accompanying the journal issue. (Note: The labels
   on the two microfiche cards in the issue are reversed.) In any
   case, the published paper should be consulted by all users of the
   machine-readable data.

File Summary:
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 FileName            Lrecl      Records   Explanations 
-------------------------------------------------------------------------------
ReadMe                  80            .   This file
catalog.dat             20         4385   The catalog  
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   The file catalog.dat contains all spectral data in contiguous
   logical records. Each spectrum begins with one header record giving
   the star and telescope identifications, and ends with a blank
   record; thus, each full spectrum can be read with a single Fortran
   DO loop that tests for a zero wavelength.

Byte-by-byte Description of file: catalog.dat 
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   Bytes     Format     Units    Label       Explanations
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   1-  5      F5.3      um       lambda      Wavelength in micrometers 
   8- 12      F5.3      ---      flux        Flux normalized to unity at
                                                lambda. = 2.15 micrometers
  15- 20      F6.4      ---      e_flux      Fractional error of flux
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History:
   The machine-readable version of An Atlas of Stellar Spectra between
   2.00 and 2.45 micrometers was received on 3 November 1989 via SPAN
   network transfer from Dr. K. A. Arnaud of the Laboratory of High
   Energy Astrophysics at the NASA Goddard Space Flight Center. Minor
   changes were made to some of the header records in order to make
   the spacing uniform; otherwise, the archived and distributed data
   are exactly as received.

Acknowledgments:
   Appreciation is expressed to Dr. Keith Arnaud for supplying the
   digital spectra and for reviewing a draft copy of the present
   document before it was finalized for distribution with the
   machine-readable atlas. This document has been adapted from the
   version prepared by Wayne Warren.
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(End)          Nancy G. Roman      [SSDOO/ADC]           Mar-16-1995