III/153 An Atlas of Near Infrared Stellar Spectra (Arnaud+ 1989)
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 1989MNRAS.237..495A
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
spectra.dat 76 83 Summary of the spectra (from Table 1)
sp/* . 83 Actual spectra
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Byte-by-byte Description of file: spectra.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Spec Spectrum ID in "sp" subdirectory (1)
5- 14 A10 --- Star Star designation (2)
18- 25 A8 --- SpType MK Spectral classification
28- 31 F4.1 [Sun] [Fe/H] ? Metallicity of star
34 I1 --- r_[Fe/H] ? Reference of Metallicity (3)
37- 45 A9 --- Obs Observation instrument
47- 80 A34 --- Notes Remarks
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Note (1):
The file containing the actual spectrum consists in a "s" followed by
the spectrum ID, and the ".dat" suffix.
Note (2): "BMB" stands for the list of stars in Baade's Window by
Blanco+McCarthy+Blanco (1984AJ.....89..636B 1984AJ.....89..636B), named also "BW" in the
publication.
Note (3): there references are numbered as follows:
2 = Cayrel de Strobel et al., 1985A&AS...59..145C 1985A&AS...59..145C
6 = Norris, 1986ApJS...61..667N 1986ApJS...61..667N
7 = Persson et al., 1977AJ.....82..729P 1977AJ.....82..729P
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Byte-by-byte Description of file: sp/*
--------------------------------------------------------------------------------
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 λ=2.15um
15- 20 F6.4 --- e_Flux Fractional error of flux
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History:
* November 1989:
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.
* 16-Mar-1995: Catalog standardized (Nancy G. Roman, SSDOO/ADC)
* 16-Mar-2005: individual spectra were assigned individual files in
the "sp" subdirectory, and the "spectra.dat" file was added.
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.
(End) Nancy G. Roman [SSDOO/ADC] 16-Mar-1995