J/ApJS/228/11 Time-dependent cooling in photoionized plasma (Gnat, 2017)
Time-dependent cooling in photoionized plasma.
Gnat O.
<Astrophys. J. Suppl. Ser., 228, 11-11 (2017)>
=2017ApJS..228...11G 2017ApJS..228...11G (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics ; Abundances ; Interstellar medium
Keywords: atomic processes; intergalactic Medium; ISM: general; plasmas;
quasars: absorption lines
Abstract:
I explore the thermal evolution and ionization states in gas cooling
from an initially hot state in the presence of external photoionizing
radiation. I compute the equilibrium and nonequilibrium cooling
efficiencies, heating rates, and ion fractions for low-density gas
cooling while exposed to the ionizing metagalactic background
radiation at various redshifts (z=0-3), for a range of temperatures
(108-104K), densities (10-7-103cm-3), and metallicities
(10-3-2 times solar). The results indicate the existence of a
threshold ionization parameter, above which the cooling efficiencies
are very close to those in photoionization equilibrium (so that
departures from equilibrium may be neglected), and below which the
cooling efficiencies resemble those in collisional time-dependent gas
cooling with no external radiation (and are thus independent of
density).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 80 9954 Equilibrium cooling efficiencies
table5.dat 80 48843 Non-equilibrium cooling efficiencies
table7.dat 80 9954 Equilibrium heating rates
table8.dat 80 48843 Non-equilibrium heating rates
table10.dat 1052 49754 Photoionization equilibrium ion fractions
table11.dat 1052 234546 Time-dependent photoionized ion fractions
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See also:
J/ApJS/168/213 : Ionization states and cooling efficiencies (Gnat+, 2007)
J/A+AS/97/443 : Fluorescence for Be to Zn (Kaastra+ 1993)
Byte-by-byte Description of file: table[45].dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- FileName Name of the file (G1)
17- 26 A10 K Temp Temperature
28- 35 E8.2 10-13.J.m+3.s-1 Lambda(Z=1e-3) ? Z=1e-3 cooling efficiency (1)
37- 44 E8.2 10-13.J.m+3.s-1 Lambda(Z=1e-2) ? Z=1e-2 cooling efficiency (1)
46- 53 E8.2 10-13.J.m+3.s-1 Lambda(Z=1e-1) ? Z=1e-1 cooling efficiency (1)
55- 62 E8.2 10-13.J.m+3.s-1 Lambda(Z=1) ? Z=1 cooling efficiency (1)
64- 71 E8.2 10-13.J.m+3.s-1 Lambda(Z=2) ? Z=2 cooling efficiency (1)
73- 76 E4.1 cm-3 nH [1e-07/1000] Density (G1)
78- 80 F3.1 --- z [0/3] Redshift (G1)
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Note (1): In units of erg cm3/s.
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Byte-by-byte Description of file: table[78].dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- FileName Name of the file (G1)
17- 26 A10 K Temp Temperature
28- 35 E8.2 10-7W Upsilon(Z=1e-3) ? Z=1e-3 heating rate (1)
37- 44 E8.2 10-7W Upsilon(Z=1e-2) ? Z=1e-2 heating rate (1)
46- 53 E8.2 10-7W Upsilon(Z=1e-1) ? Z=1e-1 heating rate (1)
55- 62 E8.2 10-7W Upsilon(Z=1) ? Z=1 heating rate (1)
64- 71 E8.2 10-7W Upsilon(Z=2) ? Z=2 heating rate (1)
73- 76 E4.1 cm-3 nH [1e-07/1000] Density (G1)
78- 80 F3.1 --- z [0/3] Redshift (G1)
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Note (1): In units of erg/s.
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Byte-by-byte Description of file: table1[01].dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- FileName Filename (1)
20- 30 A11 K Temp Temperature
32- 39 E8.2 --- H0/H H0 fractional abundance
41- 48 E8.2 --- H+/H H+ fractional abundance
50- 57 E8.2 --- He0/He He0 fractional abundance
59- 66 E8.2 --- He+/He He+ fractional abundance
68- 75 E8.2 --- He2+/He He2+ fractional abundance
77- 84 E8.2 --- C0/C C0 fractional abundance
86- 93 E8.2 --- C+/C C+ fractional abundance
95- 102 E8.2 --- C2+/C C2+ fractional abundance
104- 111 E8.2 --- C3+/C C3+ fractional abundance
113- 120 E8.2 --- C4+/C C4+ fractional abundance
122- 129 E8.2 --- C5+/C C5+ fractional abundance
131- 138 E8.2 --- C6+/C C6+ fractional abundance
140- 147 E8.2 --- N0/N N0 fractional abundance
149- 156 E8.2 --- N+/N N+ fractional abundance
158- 165 E8.2 --- N2+/N N2+ fractional abundance
167- 174 E8.2 --- N3+/N N3+ fractional abundance
176- 183 E8.2 --- N4+/N N4+ fractional abundance
185- 192 E8.2 --- N5+/N N5+ fractional abundance
194- 201 E8.2 --- N6+/N N6+ fractional abundance
203- 210 E8.2 --- N7+/N N7+ fractional abundance
212- 219 E8.2 --- O0/O O0 fractional abundance
221- 228 E8.2 --- O+/O O+ fractional abundance
230- 237 E8.2 --- O2+/O O2+ fractional abundance
239- 246 E8.2 --- O3+/O O3+ fractional abundance
248- 255 E8.2 --- O4+/O O4+ fractional abundance
257- 264 E8.2 --- O5+/O O5+ fractional abundance
266- 273 E8.2 --- O6+/O O6+ fractional abundance
275- 282 E8.2 --- O7+/O O7+ fractional abundance
284- 291 E8.2 --- O8+/O O8+ fractional abundance
293- 300 E8.2 --- Ne0/Ne Ne0 fractional abundance
302- 309 E8.2 --- Ne+/Ne Ne+ fractional abundance
311- 318 E8.2 --- Ne2+/Ne Ne2+ fractional abundance
320- 327 E8.2 --- Ne3+/Ne Ne3+ fractional abundance
329- 336 E8.2 --- Ne4+/Ne Ne4+ fractional abundance
338- 345 E8.2 --- Ne5+/Ne Ne5+ fractional abundance
347- 354 E8.2 --- Ne6+/Ne Ne6+ fractional abundance
356- 363 E8.2 --- Ne7+/Ne Ne7+ fractional abundance
365- 372 E8.2 --- Ne8+/Ne Ne8+ fractional abundance
374- 381 E8.2 --- Ne9+/Ne Ne9+ fractional abundance
383- 390 E8.2 --- Ne10+/Ne Ne10+ fractional abundance
392- 399 E8.2 --- Mg0/Mg Mg0 fractional abundance
401- 408 E8.2 --- Mg+/Mg Mg+ fractional abundance
410- 417 E8.2 --- Mg2+/Mg Mg2+ fractional abundance
419- 426 E8.2 --- Mg3+/Mg Mg3+ fractional abundance
428- 435 E8.2 --- Mg4+/Mg Mg4+ fractional abundance
437- 444 E8.2 --- Mg5+/Mg Mg5+ fractional abundance
446- 453 E8.2 --- Mg6+/Mg Mg6+ fractional abundance
455- 462 E8.2 --- Mg7+/Mg Mg7+ fractional abundance
464- 471 E8.2 --- Mg8+/Mg Mg8+ fractional abundance
473- 480 E8.2 --- Mg9+/Mg Mg9+ fractional abundance
482- 489 E8.2 --- Mg10+/Mg Mg10+ fractional abundance
491- 498 E8.2 --- Mg11+/Mg Mg11+ fractional abundance
500- 507 E8.2 --- Mg12+/Mg Mg12+ fractional abundance
509- 516 E8.2 --- Si0/Si Si0 fractional abundance
518- 525 E8.2 --- Si+/Si Si+ fractional abundance
527- 534 E8.2 --- Si2+/Si Si2+ fractional abundance
536- 543 E8.2 --- Si3+/Si Si3+ fractional abundance
545- 552 E8.2 --- Si4+/Si Si4+ fractional abundance
554- 561 E8.2 --- Si5+/Si Si5+ fractional abundance
563- 570 E8.2 --- Si6+/Si Si6+ fractional abundance
572- 579 E8.2 --- Si7+/Si Si7+ fractional abundance
581- 588 E8.2 --- Si8+/Si Si8+ fractional abundance
590- 597 E8.2 --- Si9+/Si Si9+ fractional abundance
599- 606 E8.2 --- Si10+/Si Si10+ fractional abundance
608- 615 E8.2 --- Si11+/Si Si11+ fractional abundance
617- 624 E8.2 --- Si12+/Si Si12+ fractional abundance
626- 633 E8.2 --- Si13+/Si Si13+ fractional abundance
635- 642 E8.2 --- Si14+/Si Si14+ fractional abundance
644- 651 E8.2 --- S0/S S0 fractional abundance
653- 660 E8.2 --- S+/S S+ fractional abundance
662- 669 E8.2 --- S2+/S S2+ fractional abundance
671- 678 E8.2 --- S3+/S S3+ fractional abundance
680- 687 E8.2 --- S4+/S S4+ fractional abundance
689- 696 E8.2 --- S5+/S S5+ fractional abundance
698- 705 E8.2 --- S6+/S S6+ fractional abundance
707- 714 E8.2 --- S7+/S S7+ fractional abundance
716- 723 E8.2 --- S8+/S S8+ fractional abundance
725- 732 E8.2 --- S9+/S S9+ fractional abundance
734- 741 E8.2 --- S10+/S S10+ fractional abundance
743- 750 E8.2 --- S11+/S S11+ fractional abundance
752- 759 E8.2 --- S12+/S S12+ fractional abundance
761- 768 E8.2 --- S13+/S S13+ fractional abundance
770- 777 E8.2 --- S14+/S S14+ fractional abundance
779- 786 E8.2 --- S15+/S S15+ fractional abundance
788- 795 E8.2 --- S16+/S S16+ fractional abundance
797- 804 E8.2 --- Fe0/Fe Fe0 fractional abundance
806- 813 E8.2 --- Fe+/Fe Fe+ fractional abundance
815- 822 E8.2 --- Fe2+/Fe Fe2+ fractional abundance
824- 831 E8.2 --- Fe3+/Fe Fe3+ fractional abundance
833- 840 E8.2 --- Fe4+/Fe Fe4+ fractional abundance
842- 849 E8.2 --- Fe5+/Fe Fe5+ fractional abundance
851- 858 E8.2 --- Fe6+/Fe Fe6+ fractional abundance
860- 867 E8.2 --- Fe7+/Fe Fe7+ fractional abundance
869- 876 E8.2 --- Fe8+/Fe Fe8+ fractional abundance
878- 885 E8.2 --- Fe9+/Fe Fe9+ fractional abundance
887- 894 E8.2 --- Fe10+/Fe Fe10+ fractional abundance
896- 903 E8.2 --- Fe11+/Fe Fe11+ fractional abundance
905- 912 E8.2 --- Fe12+/Fe Fe12+ fractional abundance
914- 921 E8.2 --- Fe13+/Fe Fe13+ fractional abundance
923- 930 E8.2 --- Fe14+/Fe Fe14+ fractional abundance
932- 939 E8.2 --- Fe15+/Fe Fe15+ fractional abundance
941- 948 E8.2 --- Fe16+/Fe Fe16+ fractional abundance
950- 957 E8.2 --- Fe17+/Fe Fe17+ fractional abundance
959- 966 E8.2 --- Fe18+/Fe Fe18+ fractional abundance
968- 975 E8.2 --- Fe19+/Fe Fe19+ fractional abundance
977- 984 E8.2 --- Fe20+/Fe Fe20+ fractional abundance
986- 993 E8.2 --- Fe21+/Fe Fe21+ fractional abundance
995-1002 E8.2 --- Fe22+/Fe Fe22+ fractional abundance
1004-1011 E8.2 --- Fe23+/Fe Fe23+ fractional abundance
1013-1020 E8.2 --- Fe24+/Fe Fe24+ fractional abundance
1022-1029 E8.2 --- Fe25+/Fe Fe25+ fractional abundance
1031-1038 E8.2 --- Fe26+/Fe Fe26+ fractional abundance
1040-1043 E4.1 cm-3 nH [1e-07/1000] Density (1)
1045-1047 F3.1 --- z [0/3] Redshift (1)
1049-1052 E4.1 Sun Z [0.001/10] Metallicity (1)
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Note (1): The specific density, redshift, and metallicity corresponding to the
275 numerical parts indicated in table 9 have been added by CDS along
with the corresponding FileName.
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Global notes:
Note (G1): Density-redshift values corresponding to A-BC sections as indicated
in table 3 have been added by CDS along with the corresponding
FileName (see ori.tar for the original files).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 31-Mar-2017