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J/ApJS/86/713          IR spectroscopy of ices                  (Hudgins+, 1993)

Mid- and far-infrared spectroscopy of ices: optical constants and integrated absorbances Hudgins D.M., Sandford S.A., Allamandola L.J., Tielens A.G.G.M. <Astrophys. J. Suppl. Ser. 86, 713 (1993)> =1993ApJS...86..713H
ADC_Keywords: Interstellar medium; Spectra, infrared Keywords: line: identification - molecular data Abstract: Laboratory spectra through the mid-infrared (4000 to 500cm-1 [2.5-20 micron]) have been used to calculate the optical constants (n and k) and integrated absorption coefficients (A) for a variety of pure and mixed molecular ices of relevance to astrophysics. The ices studied were H2O, CH3OH, CO2, OCS, CH4, CO2+CH4, CO2+OCS, CO+CH4, CO+OCS, O2+CH4, O2+OCS, N2+CH4, N2+OCS, H2O+CH4, H2O+OCS, and H2O+CH3OH+CO+NH3. In addition, the measurements have been extended through the far-infrared (500 to 50cm1 [20-200 micron]) for the H2O, CH3OH, and H2O+CH3OH+NH3 ices. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file summary.dat 22 77 Summary of spectra fig2.dat 29 23178 H2O:CH3OH:CO:NH3 = 100:10:1:1 Ice Mixture (Weak Interstellar Mix) percentage transmission fig3.dat 29 23178 H2O:CH3OH:CO:NH3 = 100:50:1:1 Ice Mixture (Strong Interstellar Mix) percentage transmission fig4.dat 29 19548 Pure CH3OH Ice percentage transmission fig5.dat 29 23175 Pure H2O Ice percentage transmission fig6.dat 29 16797 Pure CH4 Ice percentage transmission fig7.dat 29 14520 Pure CO2 Ice percentage transmission fig8.dat 29 7467 Pure OCS Ice percentage transmission fig9.dat 29 20736 CO:CH4 = 20:1 Ice Mixture percentage transmission fig10.dat 29 3736 CO:OCS = 20:1 Ice Mixture percentage transmission fig11.dat 29 34215 CO2:CH4= 20:1 Ice Mixture percentage transmission fig12.dat 29 21774 CO2:OCS= 20:1 Ice Mixture percentage transmission fig13.dat 29 22398 H2O:CH4= 20:1 Ice Mixture percentage transmission fig14.dat 29 18150 H2O:OCS= 20:1 Ice Mixture percentage transmission fig15.dat 29 21780 H2O:OCS= 2:1 Ice Mixture percentage transmission fig16.dat 29 9954 N2:CH4 = 20:1 Ice Mixture percentage transmission fig17.dat 29 9540 N2:OCS = 20:1 Ice Mixture percentage transmission fig18.dat 29 14931 O2:CH4 = 20:1 Ice Mixture percentage transmission fig19.dat 29 9538 O2:OCS = 20:1 Ice Mixture percentage transmission table2.dat 35 23175 H2O:CH3OH:CO:NH3 = 100:10:1:1 Ice Mixture (Weak Interstellar Mix) optical constants table3.dat 35 23175 H2O:CH3OH:CO:NH3 = 100:50:1:1 Ice Mixture (Strong Interstellar Mix) optical constants table4.dat 35 19546 Pure CH3OH Ice optical constants table5.dat 35 8868 Pure H2O Ice optical constants table6.dat 35 13992 Pure CH4 Ice optical constants table7.dat 35 14520 Pure CO2 Ice optical constants table8.dat 35 7776 Pure OCS Ice optical constants table9.dat 35 14092 CO:CH4 = 20:1 Ice Mixture optical constants table10.dat 35 7468 CO:OCS = 20:1 Ice Mixture optical constants table11.dat 45 21775 CO2:CH4 = 20:1 Ice Mixture optical constants table12.dat 35 11873 CO2:OCS = 20:1 Ice Mixture optical constants table13.dat 35 14520 H2O:CH4 = 20:1 Ice Mixture optical constants table14.dat 35 12100 H2O:OCS = 20:1 Ice Mixture optical constants table15.dat 35 21774 H2O:OCS = 2:1 Ice Mixture optical constants table16.dat 35 7466 N2:CH4 = 20:1 Ice Mixture optical constants table17.dat 35 9540 N2:OCS = 20:1 Ice Mixture optical constants table18.dat 35 10890 O2:CH4 = 20:1 Ice Mixture optical constants table19.dat 35 4770 O2:OCS = 20:1 Ice Mixture optical constants
Byte-by-byte Description of file: summary.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Tno [2/19] Table/figure number (1) 5- 7 I3 K T [10/140] Temperature of the ice 9- 15 F7.2 cm-1 Smin Lower bound of the frequency 17- 22 F6.1 cm-1 Smax Upper bound of the frequency
Note (1): the number corresponds to the composition of the ice as follows: 2 = H2O:CH3OH:CO:NH3 (100:10:1:1) weak interstellar mix 3 = H2O:CH3OH:CO:NH3 (100:50:1:1) strong interstellar mix 4 = CH3OH (methanol) ice 5 = H2O (water) ice 6 = CH4 (methane) ice 7 = CO2 (carbon dioxide) ice 8 = OCS (carbonyl sulfide) ice 9 = CO:CH4 (20:1) carbon monoxide + methane ice mixture 10 = CO:OCS (20:1) carbon monoxide + carbonyl sulfide ice mixture 11 = CO2:CH4 (20:1) carbon dioxide + methane ice mixture 12 = CO2:OCS (20:1) carbon dioxide + carbonyl sulfide ice mixture 13 = H2O:CH4 (20:1) water + methane ice mixture 14 = H2O:OCS (20:1) water + carbonyl sulfide ice mixture 15 = H2O:OCS (2:1) water + carbonyl sulfide ice mixture 16 = N2:CH4 (20:1) nitrogen + methane ice mixture 17 = N2:OCS (20:1) nitrogen + carbonyl sulfide ice mixture 18 = O2:CH4 (20:1) oxygen + methane ice mixture 19 = O2:OCS (20:1) oxygen + carbonyl sulfide ice mixture
Byte-by-byte Description of file: fig*.dat
Bytes Format Units Label Explanations
2- 4 I3 K Temp [10/140] Temperature 8- 15 F8.3 cm-1 nu [50/4000] Frequency 23- 29 F7.3 % T Percentage of transmission
Byte-by-byte Description of file: table?.dat table1[023456789].dat
Bytes Format Units Label Explanations
2- 4 I3 K Temp [10/140] Temperature 7- 14 F8.3 cm-1 nu [50/4000] Frequency 16- 24 F9.7 --- n Real part of the index of refraction (1) 25- 35 E11.8 --- k ? Imaginary part of the index of refraction
Note (1): The index of refraction is the complex number n + ik
Byte-by-byte Description of file: table11.dat
Bytes Format Units Label Explanations
1- 3 I3 K Temp [10/140] Temperature 5- 12 F8.3 cm-1 nu1 [50/4000] Frequency nu1 18- 24 F7.5 --- n(nu1) Real part of the index of refraction for frequency nu1 (1) 27- 34 F8.3 cm-1 nu2 ? [50/4000] Frequency nu2 35- 45 E11.5 --- k(nu2) ? Imaginary part of the index of refraction for frequency nu2
Note (1): The index of refraction is the complex number n + ik
History: * 16-Sep-1994: Created from AAS CD-ROM#1 * 08-Oct-2011: ReadMe revisited, added file "summary.dat"
(End) Patricia Bauer, Francois Ochsenbein [CDS] 16-Sep-1994
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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