J/A+AS/119/111 Molecular abundances in dense interstellar clouds (Lee+ 1996)
Fractional abundances of molecules in dense interstellar clouds: a
compendium of recent model results
Lee H.-H., Bettens R.P.A., Herbst E.
<Astron. Astrophys. Suppl. Ser. 119, 111 (1996)>
=1996A&AS..119..111L 1996A&AS..119..111L
ADC_Keywords: Interstellar medium ; Abundances
Keywords: ISM: clouds - ISM: abundances - ISM: molecules - molecular processes
Abstract:
In this paper we present calculated fractional abundances in dense
interstellar clouds for selected atomic and molecular species using
three different homogeneous, pseudo-time-dependent models discussed by
Bettens, Lee, & Herbst (1995): the new standard model, the new
neutral-neutral model, and model 4. We have run each model with 3
different hydrogen densities - 1,000; 10,000; and 100,000cm-3 - and
two temperatures - 10K and 50K. "Low metal" elemental abundances
have been used for all three models; the new standard model has also
been run with "high metal" abundances.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.tex 129 5043 All tables in latex
table2a.dat 48 280 New standard model: n=10+3 cm-3,T=10K
table2b.dat 48 280 New standard model: n=10+3 cm-3,T=50K
table3a.dat 48 280 New standard model: n=10+4 cm-3,T=10K
table3b.dat 48 280 New standard model: n=10+4 cm-3,T=50K
table4a.dat 48 280 New standard model: n=10+5 cm-3,T=10K
table4b.dat 48 280 New standard model: n=10+5 cm-3,T=50K
table5a.dat 48 280 New neutral-neutral model: n=10+3 cm-3,T=10K
table5b.dat 48 280 New neutral-neutral model: n=10+3 cm-3,T=50K
table6a.dat 48 280 New neutral-neutral model: n=10+4 cm-3,T=10K
table6b.dat 48 280 New neutral-neutral model: n=10+4 cm-3,T=50K
table7a.dat 48 280 New neutral-neutral model: n=10+5 cm-3,T=10K
table7b.dat 48 280 New neutral-neutral model: n=10+5 cm-3,T=50K
table8a.dat 48 280 Model 4: n=10+3 cm-3,T=10K
table8b.dat 48 280 Model 4: n=10+3 cm-3,T=50K
table9a.dat 48 280 Model 4: n=10+4 cm-3,T=10K
table9b.dat 48 280 Model 4: n=10+4 cm-3,T=50K
table10a.dat 48 280 Model 4: n=10+5 cm-3,T=10K
table10b.dat 48 280 Model 4: n=10+5 cm-3,T=50K
table11a.dat 48 280 New standard model(high metal): n=10+3 cm-3,T=10K
table11b.dat 48 280 New standard model(high metal): n=10+3 cm-3,T=50K
table12a.dat 48 280 New standard model(high metal): n=10+4 cm-3,T=10K
table12b.dat 48 280 New standard model(high metal): n=10+4 cm-3,T=50K
table13a.dat 48 280 New standard model(high metal): n=10+5 cm-3,T=10K
table13b.dat 48 280 New standard model(high metal): n=10+5 cm-3,T=50K
standard.dat 56 1680 New standard model (tables 2,3,4)
neu_neu.dat 56 1680 New neutral-neutral model (tables 5,6,7)
model4.dat 56 1680 Model4 (Bettens 1995ApJ...443..664B 1995ApJ...443..664B) tables 8,9,10
high_met.dat 56 1680 New standard model(high metal) (tables 11,12,13)
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Byte-by-byte Description of file: table*.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Species Species name
11- 18 E8.3 --- A4.5 Fractional abundances at 10+4.5 years
21- 28 E8.3 --- A5 Fractional abundances at 10+5 years
31- 38 E8.3 --- A5.5 Fractional abundances at 10+5.5 years
41- 48 E8.3 --- Asts Fractional abundances at steady state
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Byte-by-byte Description of file: standard.dat neu_neu.dat
Byte-by-byte Description of file: model4.dat high_met.dat
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Bytes Format Units Label Explanations
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1- 4 E4.1 cm-3 nH [1.e3,1.e5] Density
6- 7 I2 K T [10,50] Cloud temperature
9- 16 A8 --- Species Species name
19- 26 E8.3 --- A4.5 Fractional abundances at 10+4.5 years
29- 36 E8.3 --- A5 Fractional abundances at 10+5 years
39- 46 E8.3 --- A5.5 Fractional abundances at 10+5.5 years
49- 56 E8.3 --- Asts Fractional abundances at steady state
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References:
Bettens, Lee, & Herbst, 1995, ApJ 443, 664 =1995ApJ...443..664B 1995ApJ...443..664B
Courtesy: H.H. Lee
History:
* 23-Aug-2004: addition of files grouped by model
(standard.dat neu_neu.dat file: model4.dat highmetal.dat)
(End) [CDS] 15-Feb-1996