J/ApJS/228/11ivo://CDS.VizieR/J/ApJS/228/11doi:10.26093/cds/vizier.22280011CDSGnat O.2017-05-23T08:02:33Z2017-04-24T12:29:21ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fratomic-physicschemical-abundancesinterstellar-mediumI 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 (10^8^-10^4^K), densities (10^-7^-10^3^cm^-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).2017ApJS..228...11Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/228/11CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/168/213 : Ionization states and cooling efficiencies (Gnat+, 2007)J/A+AS/97/443 : Fluorescence for Be to Zn (Kaastra+ 1993)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/228/11https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/228/11http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/228/11https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/228/11https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/228/11http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/228/11GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/228/11/table8Non-equilibrium heating ratesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameName of the file (G1)meta.id;meta.filecharTempTemperatureKphys.temperaturecharUpsilon(Z=1e-3)? Z=1e-3 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullableUpsilon(Z=1e-2)? Z=1e-2 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullableUpsilon(Z=1e-1)? Z=1e-1 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullableUpsilon(Z=1)? Z=1 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullableUpsilon(Z=2)? Z=2 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullablenH[1e-07/1000] Density (G1)cm**-3phys.columnDensityfloatz[0/3] Redshift (G1)src.redshiftfloatJ/ApJS/228/11/table10Photoionization equilibrium ion fractionsSi13+/SiSi13+ fractional abundancephys.abunddoubleN3+/NN3+ fractional abundancephys.abunddoubleN4+/NN4+ fractional abundancephys.abunddoubleN5+/NN5+ fractional abundancephys.abunddoubleHe0/HeHe0 fractional abundancephys.abunddoubleSi14+/SiSi14+ fractional abundancephys.abunddoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameFilename (1)meta.id;meta.filecharTempTemperatureKphys.temperaturecharH0/HH0 fractional abundancephys.abunddoubleH+/HH+ fractional abundancephys.abunddoubleHe+/HeHe+ fractional abundancephys.abunddoubleHe2+/HeHe2+ fractional abundancephys.abunddoubleC0/CC0 fractional abundancephys.abunddoubleC+/CC+ fractional abundancephys.abunddoubleC2+/CC2+ fractional abundancephys.abunddoubleC3+/CC3+ fractional abundancephys.abunddoubleC4+/CC4+ fractional abundancephys.abunddoubleC5+/CC5+ fractional abundancephys.abunddoubleC6+/CC6+ fractional abundancephys.abunddoubleN0/NN0 fractional abundancephys.abunddoubleN+/NN+ fractional abundancephys.abunddoubleN2+/NN2+ fractional abundancephys.abunddoubleN6+/NN6+ fractional abundancephys.abunddoubleN7+/NN7+ fractional abundancephys.abunddoubleO0/OO0 fractional abundancephys.abunddoubleO+/OO+ fractional abundancephys.abunddoubleO2+/OO2+ fractional abundancephys.abunddoubleO3+/OO3+ fractional abundancephys.abunddoubleO4+/OO4+ fractional abundancephys.abunddoubleO5+/OO5+ fractional abundancephys.abunddoubleO6+/OO6+ fractional abundancephys.abunddoubleO7+/OO7+ fractional abundancephys.abunddoubleO8+/OO8+ fractional abundancephys.abunddoubleNe0/NeNe0 fractional abundancephys.abunddoubleNe+/NeNe+ fractional abundancephys.abunddoubleNe2+/NeNe2+ fractional abundancephys.abunddoubleNe3+/NeNe3+ fractional abundancephys.abunddoubleNe4+/NeNe4+ fractional abundancephys.abunddoubleNe5+/NeNe5+ fractional abundancephys.abunddoubleNe6+/NeNe6+ fractional abundancephys.abunddoubleNe7+/NeNe7+ fractional abundancephys.abunddoubleNe8+/NeNe8+ fractional abundancephys.abunddoubleNe9+/NeNe9+ fractional abundancephys.abunddoubleNe10+/NeNe10+ fractional abundancephys.abunddoubleMg0/MgMg0 fractional abundancephys.abunddoubleMg+/MgMg+ fractional abundancephys.abunddoubleMg2+/MgMg2+ fractional abundancephys.abunddoubleMg3+/MgMg3+ fractional abundancephys.abunddoubleMg4+/MgMg4+ fractional abundancephys.abunddoubleMg5+/MgMg5+ fractional abundancephys.abunddoubleMg6+/MgMg6+ fractional abundancephys.abunddoubleMg7+/MgMg7+ fractional abundancephys.abunddoubleMg8+/MgMg8+ fractional abundancephys.abunddoubleMg9+/MgMg9+ fractional abundancephys.abunddoubleMg10+/MgMg10+ fractional abundancephys.abunddoubleMg11+/MgMg11+ fractional abundancephys.abunddoubleMg12+/MgMg12+ fractional abundancephys.abunddoubleSi0/SiSi0 fractional abundancephys.abunddoubleSi+/SiSi+ fractional abundancephys.abunddoubleSi2+/SiSi2+ fractional abundancephys.abunddoubleSi3+/SiSi3+ fractional abundancephys.abunddoubleSi4+/SiSi4+ fractional abundancephys.abunddoubleSi5+/SiSi5+ fractional abundancephys.abunddoubleSi6+/SiSi6+ fractional abundancephys.abunddoubleSi7+/SiSi7+ fractional abundancephys.abunddoubleSi8+/SiSi8+ fractional abundancephys.abunddoubleSi9+/SiSi9+ fractional abundancephys.abunddoubleSi10+/SiSi10+ fractional abundancephys.abunddoubleSi11+/SiSi11+ fractional abundancephys.abunddoubleSi12+/SiSi12+ fractional abundancephys.abunddoubleS0/SS0 fractional abundancephys.abunddoubleS+/SS+ fractional abundancephys.abunddoubleS2+/SS2+ fractional abundancephys.abunddoubleS3+/SS3+ fractional abundancephys.abunddoubleS4+/SS4+ fractional abundancephys.abunddoubleS5+/SS5+ fractional abundancephys.abunddoubleS6+/SS6+ fractional abundancephys.abunddoubleS7+/SS7+ fractional abundancephys.abunddoubleS8+/SS8+ fractional abundancephys.abunddoubleS9+/SS9+ fractional abundancephys.abunddoubleS10+/SS10+ fractional abundancephys.abunddoubleS11+/SS11+ fractional abundancephys.abunddoubleS12+/SS12+ fractional abundancephys.abunddoubleS13+/SS13+ fractional abundancephys.abunddoubleS14+/SS14+ fractional abundancephys.abunddoubleS15+/SS15+ fractional abundancephys.abunddoubleS16+/SS16+ fractional abundancephys.abunddoubleFe0/FeFe0 fractional abundancephys.abunddoubleFe+/FeFe+ fractional abundancephys.abunddoubleFe2+/FeFe2+ fractional abundancephys.abunddoubleFe3+/FeFe3+ fractional abundancephys.abunddoubleFe4+/FeFe4+ fractional abundancephys.abunddoubleFe5+/FeFe5+ fractional abundancephys.abunddoubleFe6+/FeFe6+ fractional abundancephys.abunddoubleFe7+/FeFe7+ fractional abundancephys.abunddoubleFe8+/FeFe8+ fractional abundancephys.abunddoubleFe9+/FeFe9+ fractional abundancephys.abunddoubleFe10+/FeFe10+ fractional abundancephys.abunddoubleFe11+/FeFe11+ fractional abundancephys.abunddoubleFe12+/FeFe12+ fractional abundancephys.abunddoubleFe13+/FeFe13+ fractional abundancephys.abunddoubleFe14+/FeFe14+ fractional abundancephys.abunddoubleFe15+/FeFe15+ fractional abundancephys.abunddoubleFe16+/FeFe16+ fractional abundancephys.abunddoubleFe17+/FeFe17+ fractional abundancephys.abunddoubleFe18+/FeFe18+ fractional abundancephys.abunddoubleFe19+/FeFe19+ fractional abundancephys.abunddoubleFe20+/FeFe20+ fractional abundancephys.abunddoubleFe21+/FeFe21+ fractional abundancephys.abunddoubleFe22+/FeFe22+ fractional abundancephys.abunddoubleFe23+/FeFe23+ fractional abundancephys.abunddoubleFe24+/FeFe24+ fractional abundancephys.abunddoubleFe25+/FeFe25+ fractional abundancephys.abunddoubleFe26+/FeFe26+ fractional abundancephys.abunddoublenH[1e-07/1000] Density (1)cm**-3phys.columnDensityfloatz[0/3] Redshift (1)src.redshiftfloatZ[0.001/10] Metallicity (1)Sunphys.abund.ZfloatJ/ApJS/228/11/table11Time-dependent photoionized ion fractionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameFilename (1)meta.id;meta.filecharTempTemperatureKphys.temperaturecharH0/HH0 fractional abundancephys.abunddoubleH+/HH+ fractional abundancephys.abunddoubleHe0/HeHe0 fractional abundancephys.abunddoubleHe+/HeHe+ fractional abundancephys.abunddoubleHe2+/HeHe2+ fractional abundancephys.abunddoubleC0/CC0 fractional abundancephys.abunddoubleC+/CC+ fractional abundancephys.abunddoubleC2+/CC2+ fractional abundancephys.abunddoubleC3+/CC3+ fractional abundancephys.abunddoubleC4+/CC4+ fractional abundancephys.abunddoubleC5+/CC5+ fractional abundancephys.abunddoubleC6+/CC6+ fractional abundancephys.abunddoubleN0/NN0 fractional abundancephys.abunddoubleN+/NN+ fractional abundancephys.abunddoubleN2+/NN2+ fractional abundancephys.abunddoubleN3+/NN3+ fractional abundancephys.abunddoubleN4+/NN4+ fractional abundancephys.abunddoubleN5+/NN5+ fractional abundancephys.abunddoubleN6+/NN6+ fractional abundancephys.abunddoubleN7+/NN7+ fractional abundancephys.abunddoubleO0/OO0 fractional abundancephys.abunddoubleO+/OO+ fractional abundancephys.abunddoubleO2+/OO2+ fractional abundancephys.abunddoubleO3+/OO3+ fractional abundancephys.abunddoubleO4+/OO4+ fractional abundancephys.abunddoubleO5+/OO5+ fractional abundancephys.abunddoubleO6+/OO6+ fractional abundancephys.abunddoubleO7+/OO7+ fractional abundancephys.abunddoubleO8+/OO8+ fractional abundancephys.abunddoubleNe0/NeNe0 fractional abundancephys.abunddoubleNe+/NeNe+ fractional abundancephys.abunddoubleNe2+/NeNe2+ fractional abundancephys.abunddoubleNe3+/NeNe3+ fractional abundancephys.abunddoubleNe4+/NeNe4+ fractional abundancephys.abunddoubleNe5+/NeNe5+ fractional abundancephys.abunddoubleNe6+/NeNe6+ fractional abundancephys.abunddoubleNe7+/NeNe7+ fractional abundancephys.abunddoubleNe8+/NeNe8+ fractional abundancephys.abunddoubleNe9+/NeNe9+ fractional abundancephys.abunddoubleNe10+/NeNe10+ fractional abundancephys.abunddoubleMg0/MgMg0 fractional abundancephys.abunddoubleMg+/MgMg+ fractional abundancephys.abunddoubleMg2+/MgMg2+ fractional abundancephys.abunddoubleMg3+/MgMg3+ fractional abundancephys.abunddoubleMg4+/MgMg4+ fractional abundancephys.abunddoubleMg5+/MgMg5+ fractional abundancephys.abunddoubleMg6+/MgMg6+ fractional abundancephys.abunddoubleMg7+/MgMg7+ fractional abundancephys.abunddoubleMg8+/MgMg8+ fractional abundancephys.abunddoubleMg9+/MgMg9+ fractional abundancephys.abunddoubleMg10+/MgMg10+ fractional abundancephys.abunddoubleMg11+/MgMg11+ fractional abundancephys.abunddoubleMg12+/MgMg12+ fractional abundancephys.abunddoubleSi0/SiSi0 fractional abundancephys.abunddoubleSi+/SiSi+ fractional abundancephys.abunddoubleSi2+/SiSi2+ fractional abundancephys.abunddoubleSi3+/SiSi3+ fractional abundancephys.abunddoubleSi4+/SiSi4+ fractional abundancephys.abunddoubleSi5+/SiSi5+ fractional abundancephys.abunddoubleSi6+/SiSi6+ fractional abundancephys.abunddoubleSi7+/SiSi7+ fractional abundancephys.abunddoubleSi8+/SiSi8+ fractional abundancephys.abunddoubleSi9+/SiSi9+ fractional abundancephys.abunddoubleSi10+/SiSi10+ fractional abundancephys.abunddoubleSi11+/SiSi11+ fractional abundancephys.abunddoubleSi12+/SiSi12+ fractional abundancephys.abunddoubleSi13+/SiSi13+ fractional abundancephys.abunddoubleSi14+/SiSi14+ fractional abundancephys.abunddoubleS0/SS0 fractional abundancephys.abunddoubleS+/SS+ fractional abundancephys.abunddoubleS2+/SS2+ fractional abundancephys.abunddoubleS3+/SS3+ fractional abundancephys.abunddoubleS4+/SS4+ fractional abundancephys.abunddoubleS5+/SS5+ fractional abundancephys.abunddoubleS6+/SS6+ fractional abundancephys.abunddoubleS7+/SS7+ fractional abundancephys.abunddoubleS8+/SS8+ fractional abundancephys.abunddoubleS9+/SS9+ fractional abundancephys.abunddoubleS10+/SS10+ fractional abundancephys.abunddoubleS11+/SS11+ fractional abundancephys.abunddoubleS12+/SS12+ fractional abundancephys.abunddoubleS13+/SS13+ fractional abundancephys.abunddoubleS14+/SS14+ fractional abundancephys.abunddoubleS15+/SS15+ fractional abundancephys.abunddoubleS16+/SS16+ fractional abundancephys.abunddoubleFe0/FeFe0 fractional abundancephys.abunddoubleFe+/FeFe+ fractional abundancephys.abunddoubleFe2+/FeFe2+ fractional abundancephys.abunddoubleFe3+/FeFe3+ fractional abundancephys.abunddoubleFe4+/FeFe4+ fractional abundancephys.abunddoubleFe5+/FeFe5+ fractional abundancephys.abunddoubleFe6+/FeFe6+ fractional abundancephys.abunddoubleFe7+/FeFe7+ fractional abundancephys.abunddoubleFe8+/FeFe8+ fractional abundancephys.abunddoubleFe9+/FeFe9+ fractional abundancephys.abunddoubleFe10+/FeFe10+ fractional abundancephys.abunddoubleFe11+/FeFe11+ fractional abundancephys.abunddoubleFe12+/FeFe12+ fractional abundancephys.abunddoubleFe13+/FeFe13+ fractional abundancephys.abunddoubleFe14+/FeFe14+ fractional abundancephys.abunddoubleFe15+/FeFe15+ fractional abundancephys.abunddoubleFe16+/FeFe16+ fractional abundancephys.abunddoubleFe17+/FeFe17+ fractional abundancephys.abunddoubleFe18+/FeFe18+ fractional abundancephys.abunddoubleFe19+/FeFe19+ fractional abundancephys.abunddoubleFe20+/FeFe20+ fractional abundancephys.abunddoubleFe21+/FeFe21+ fractional abundancephys.abunddoubleFe22+/FeFe22+ fractional abundancephys.abunddoubleFe23+/FeFe23+ fractional abundancephys.abunddoubleFe24+/FeFe24+ fractional abundancephys.abunddoubleFe25+/FeFe25+ fractional abundancephys.abunddoubleFe26+/FeFe26+ fractional abundancephys.abunddoublenH[1e-07/1000] Density (1)cm**-3phys.columnDensityfloatz[0/3] Redshift (1)src.redshiftfloatZ[0.001/10] Metallicity (1)Sunphys.abund.ZfloatJ/ApJS/228/11/table4Equilibrium cooling efficienciesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameName of the file (G1)meta.id;meta.filecharTempTemperatureKphys.temperaturecharLambda(Z=1e-3)? Z=1e-3 cooling efficiency (1)stat.paramdoublenullableLambda(Z=1e-2)? Z=1e-2 cooling efficiency (1)stat.paramdoublenullableLambda(Z=1e-1)? Z=1e-1 cooling efficiency (1)stat.paramdoublenullableLambda(Z=1)? Z=1 cooling efficiency (1)stat.paramdoublenullableLambda(Z=2)? Z=2 cooling efficiency (1)stat.paramdoublenullablenH[1e-07/1000] Density (G1)cm**-3phys.columnDensityfloatz[0/3] Redshift (G1)src.redshiftfloatJ/ApJS/228/11/table5Non-equilibrium cooling efficienciesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameName of the file (G1)meta.id;meta.filecharTempTemperatureKphys.temperaturecharLambda(Z=1e-3)? Z=1e-3 cooling efficiency (1)stat.paramdoublenullableLambda(Z=1e-2)? Z=1e-2 cooling efficiency (1)stat.paramdoublenullableLambda(Z=1e-1)? Z=1e-1 cooling efficiency (1)stat.paramdoublenullableLambda(Z=1)? Z=1 cooling efficiency (1)stat.paramdoublenullableLambda(Z=2)? Z=2 cooling efficiency (1)stat.paramdoublenullablenH[1e-07/1000] Density (G1)cm**-3phys.columnDensityfloatz[0/3] Redshift (G1)src.redshiftfloatJ/ApJS/228/11/table7Equilibrium heating ratesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameName of the file (G1)meta.id;meta.filecharTempTemperatureKphys.temperaturecharUpsilon(Z=1e-3)? Z=1e-3 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullableUpsilon(Z=1e-2)? Z=1e-2 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullableUpsilon(Z=1e-1)? Z=1e-1 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullableUpsilon(Z=1)? Z=1 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullableUpsilon(Z=2)? Z=2 heating rate (1)1e-07Warith.rate;src.redshiftdoublenullablenH[1e-07/1000] Density (G1)cm**-3phys.columnDensityfloatz[0/3] Redshift (G1)src.redshiftfloat