J/A+A/449/583 Temperature effects on spectra of olivine particles (Koike+, 2006)
Temperature effects on the mid-and far-infrared spectra of olivine particles.
Koike C., Mutschke H., Suto H., Naoi T., Chihara H., Henning T., Jager C.,
Tsuchiyama A., Dorschner J., Okuda H.
<Astron. Astrophys. 449, 583 (2006)>
=2006A&A...449..583K 2006A&A...449..583K
ADC_Keywords: Spectra, infrared ; Interstellar medium
Keywords: stars: circumstellar matter
Abstract:
The absorption spectra of the olivine particles of different Mg/Fe
content were measured in the infrared spectral region between 5 and
100µm, while the particles were continuously cooled down to 10K.
Measurements independently carried out on different samples of
synthetic forsterite, natural olivine, and synthetic fayalite at
laboratories in Kyoto and Jena. The positions of the olivine infrared
bands were measured for these samples in detail at up to seven
individual temperatures in the interval between 300K and 10K.
According to the different widths of the olivine bands in different
wavelength regions, spectral resolutions of 2, 1, 0.5, 0.25, 0.2, and
0.125cm-1 were used in order to measure the band positions
with high accuracy.
Description:
The data tables contain the measured infrared transmission spectra
T(λ) of the Jena samples at 4 different temperatures which, for
reasons of lacking space and similarity to the spectra of the Kyoto
samples, have not been displayed in the printed paper. Mass absorption
coefficients can be derived from these spectra by dividing the optical
depth τ=-ln(T) by the column density of 0.3015 milligrams silicate
particles per square centimeter.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
jfor.dat 40 2386 Wavelength-dependent transmission (8-100micron)
at 4 temperatures of Jena forsterite
joli.dat 40 2386 Wavelength-dependent transmission (8-100micron)
at 4 temperatures of San Carlos olivine
jfay.dat 40 2386 Wavelength-dependent transmission (8-100micron)
at 4 temperatures of Jena fayalite
jforfir.dat 40 2489 Transmission for Jena forsterite at higher spectral
resolution for 40-100micron
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Byte-by-byte Description of file: jfor.dat joli.dat jfay.dat jforfir.dat
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Bytes Format Units Label Explanations
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1- 8 F8.5 um Lambda Wavelength
10- 16 F7.5 --- T(300K) Transmission at 300K temperature
18- 24 F7.5 --- T(200K) Transmission at 200K temperature
26- 32 F7.5 --- T(100K) Transmission at 100K temperature
34- 40 F7.5 --- T(10K) Transmission at 10K temperature
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Acknowledgements: Harald Mutschke, mutschke(at)astro.uni-jena.de
(End) Harald Mutschke [AIU Jena], Patricia Vannier [CDS] 27-Dec-2005