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III/196          Near-IR stellar spectra from 1.428 to 2.5 um     (Lancon+ 1996)

A library of near-IR stellar spectra from 1.428 to 2.5 µm. Lancon A., Rocca-Volmerange B. <Astron. Astrophys. Suppl. Ser. 96, 593 (1992)> =1992A&AS...96..593L
ADC_Keywords: Spectra, infrared Keywords: stars: atlas - stars: infrared spectroscopy - stars: temperature and colours Description: This library is an EXTENDED VERSION of the library published by A.Lancon and B.Rocca-Volmerange in 1992. The catalog contains near-IR spectra of 84 stars, obtained with the Fourier Transform Spectrograph at the Canada-France-Hawaii Telescope on Mauna Kea, Hawaii. The spectra cover the H and K atmospheric windows, i.e. wavelengths from 1.43 to 2.5 microns, with a typical resolving power of 500. The spectra have all been reduced again in 1996. The general procedure was as described in the original article, except that the intrinsic energy distributions of the stars used as references were assumed to be well represented by the models of Kurucz, 1993. Making extensive use of the Simbad data base, we have searched the literature on each of these stars, looking for effective temperature and extinction determinations. The new reduction improves the reliability of the continua, and reduces possible systematic differences between observing runs. The files contain the reduced spectra in FITS format, with fluxes in arbitrary units of energy per unit frequency (normalised to approximately 1 in the K band) and frequencies in cm-1, the natural units of Fourier Transform spectroscopy. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 168 95 List of spectra stars.tex 82 359 *LaTeX tables rawspec.fit 2880 4 *Raw spectrum of an O9V star fits/* 0 95 Subdirectory with the 95 FITS spectra
Note on rawspec.fit: this file can be used to determine in which spectral regions the quality is worst due to molecular opacity in the Earth atmosphere. Note on stars.tex: the file should be compiled with LaTex in landscape mode; the text width could well be too big for American paper format, in this case "" should be changed into ""-------------------------------------------------------------------------------- Byte-by-byte Description of file: stars.dat
Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
1 A1 --- LC [dgc] Luminosity class (dwarf giant supergiant) 3- 13 A11 --- Object Object name 15- 16 I2 h RAh Right Ascension J2000 (hours) (1) 18- 19 I2 min RAm Right Ascension J2000 (minutes) (1) 21- 24 F4.1 s RAs Right Ascension J2000 (seconds) (1) 26 A1 --- DE- Declination J2000 (sign) (1) 27- 28 I2 deg DEd Declination J2000 (degrees) (1) 30- 31 I2 arcmin DEm Declination J2000 (minutes) (1) 33- 34 I2 arcsec DEs Declination J2000 (seconds) (1) 36- 43 A8 --- FITSfile Name of FITS file in "fits" subdirectory (2) 45 I1 --- Qual [1/3] Quality of spectrum (3) 47- 55 A9 --- Cont Continuum model (4) 57- 62 F6.3 mag H-K Color index (5) 64- 68 F5.2 mag (H-K)lit ? H-K found in the literature (6) 69 A1 --- u_(H-K)lit [?~] Uncertainty flag on (H-K)lit 70- 74 F5.2 mag (H-K)lit2 ? H-K found in the literature (6) 76- 83 A8 --- SpType Spectral type 85-118 A34 --- Comments Other properties found in literature 120-168 A49 --- Names Cross-identifications
Note (1): Position taken from SIMBAD Note (2): the full filename is concatenation of FITSfile and extension ".fit"; the corresponding file is in subdirectory fits. Spectra are normally dereddened, unless FITSname is terminated by 'r' (e.g. sp101r) which indicates a naturally reddened spectrum. Note (3): Very rough classification in 3 groups. 1=ok. 2=still ok, but not as good as 1, 3=poor (some of these would best be discarded). Note (4): this column is empty, except if the corresponding star has been used as a reference for the correction for atmospheric absorption and for the relative flux calibration. In that case, the column indicates which Kurucz spectrum has been assumed to represent the continuum of this star. As a result of the calibration procedure, the final spectrum for a reference star will follow the Kurucz model closely (reddened, where necessary). Note (5): Measured H-K (filters of Bessell and Brett, 1988PASP..100.1134B). The values are given with 3 digits, but ± 0.015 mag. is a reasonable estimate of the 2 sigma error in general. Note (6): the H-K colour index found in the literature could be different systems.
References: Bessel M.S., Brett J.M., 1988PASP..100.1134B Lancon A., Rocca-Volmerange B., 1992A&AS...96..593L
(End) Ariane Lancon [Strasbourg], Francois Ochsenbein [CDS] 26-Feb-1997
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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