J/ApJS/229/34ivo://CDS.VizieR/J/ApJS/229/34doi:10.26093/cds/vizier.22290034CDSSutherland R.S.Dopita M.A.2017-09-04T08:02:02Z2017-07-06T15:33:45ZCDS support team

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

cds-question@unistra.fratomic-physicsmagnetic-fieldsIn this paper we treat the preionization problem in shocks over the velocity range 10<v_s_<1500km/s in a self-consistent manner. We identify four distinct classes of solutions controlled by the value of the shock-precursor parameter, {Psi}=Q/v_s_, where Q is the ionization parameter of the UV photons escaping upstream. This parameter determines both the temperature and the degree of ionization of the gas entering the shock. In increasing velocity, the shock solution regimes are cold neutral precursors (v_s_<~40km/s), warm neutral precursors (40<~v_s_<~75km/s), warm partly ionized precursors (75<~v_s_<~120km/s), and fast shocks in which the preshock gas is in photoionization equilibrium and is fully ionized. The main effect of a magnetic field is to push these velocity ranges to higher values and to limit the postshock compression. In order to facilitate comparison with observations of shocks, we provide a number of convenient scaling relationships for parameters, such as postshock temperature, compression factors, cooling lengths, and H{beta} and X-ray luminosity.2017ApJS..229...34Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/229/34CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/208/10 : Effects of {kappa}-distribution in HII regions (Dopita+, 2013)J/ApJ/752/148 : {kappa}-distributed electrons & OIII em. line (Nicholls+, 2012)J/ApJ/619/755 : Modeling starburst SEDs (Dopita+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/229/34https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/229/34http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/229/34https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/229/34https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/229/34http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/229/34GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/229/34/table13Further shock structural parametersRRam pressure variable (G1)stat.fit.paramdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintetaM[0/0.1] Magnetic to ram pressure ratio {eta}_M_ (2P_B_/P_ram_)stat.fit.omcdoubleB0[0/1721] Magnetic field; microGauss1e-10Tphys.magFielddoubleMASonic Mach number (3.16, 10.00, 31.62, 100.00 or "infty")phys.veloc;arith.diffcharPramRam pressure; dyne/cm^2^dN.m**-2phys.pressuredoublelogVs[1.3/3.2] Log velocitylog(km.s**-1)phys.velocfloatMach[3.3/88.1] Mach numberphys.veloc;arith.difffloatPrea[0/646] Pre-shock magnetic {alpha}; P_B_/P_gas_stat.fit.omcdoublePosta[0/0.4] Post-shock magnetic {alpha}; P_B_/P_gas_stat.fit.omcdoubleJump[2.6/4] Compresion jump factorarith.factorfloatMax[3/169800] Maximum compression factor (1)stat.maxdoublelam4Cooling column density; {lambda}_4_cm**-2phys.columnDensitydoublelam3Cooling column density; {lambda}_3_cm**-2phys.columnDensitydoubleAllDisplay all data for the same etaM, MA, R and logVsmeta.ref.urlcharJ/ApJS/229/34/table12Shock structural parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintetaM[0/0.1] Magnetic to ram pressure ratio {eta}_M_ (2P_B_/P_ram_)stat.fit.omcdoubleB0[0/1721] Magnetic field; microGauss1e-10Tphys.magFielddoubleMASonic Mach number (3.16, 10.00, 31.62, 100.00 or "infty")phys.veloc;arith.diffcharRRam pressure variable (G1)stat.fit.paramdoublePramRam pressure; dyne/cm^2^dN.m**-2phys.pressuredoublelogVs[1.3/3.2] Log velocitylog(km.s**-1)phys.velocfloatnH[0.004/251200] Hydrogen densitycm**-3phys.densitydoublePreT[10/59790] Pre-shock temperatureKphys.temperaturedoublePostT[6251/31920000] Post-shock temperatureKphys.temperaturedoubleHIH I ionization fractionphys.luminosity;arith.ratiodoubleHIIH II ionization fractionphys.luminosity;arith.ratiodoubleMass[0.6/1.3] Particle mass; a.m.u.phys.massfloatAllDisplay all data for the same etaM, MA, R and logVsmeta.ref.urlcharJ/ApJS/229/34/table14Shock radiation parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintetaM[0/0.1] Magnetic to ram pressure ratio {eta}_M_ (2P_B_/P_ram_)stat.fit.omcdoubleB0[0/1721] Magnetic field; microGauss1e-10Tphys.magFielddoubleMASonic Mach number (3.16, 10.00, 31.62, 100.00 or "infty")phys.veloc;arith.diffcharRRam pressure variable (G1)stat.fit.paramdoublePramRam pressure; dyne/cm^2^dN.m**-2phys.pressuredoublelogVs[1.3/3.2] Log velocitylog(km.s**-1)phys.velocfloatnH[0.004/251200] Hydrogen densitycm**-3phys.densitydoublePsiTotTotal photon production parameterphys.luminositydoublePsiH[0/24] Hydrogen-ionizing photon production parameterphys.ionizParam.raddoublePsiKeV[0/0.9] X-ray-ionizing photon production parameterphys.ionizParam.raddoublePhiTotTotal energy production parameterstat.param;phys.energydoublePhiHHydrogen-ionizing energy production parameterphys.energy;phys.atmol.ionizationdoublePhiKeVX-ray-ionizing energy production parameterphys.energy;phys.atmol.ionizationdoubleAllDisplay all data for the same etaM, MA, R and logVsmeta.ref.urlcharJ/ApJS/229/34/table15Shock 4{pi} steradian Balmer line radiationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintetaM[0/0.1] Magnetic to ram pressure ratio {eta}_M_ (2P_B_/P_ram_)stat.fit.omcdoubleMASonic Mach number (3.16, 10.00, 31.62, 100.00 or "infty")phys.veloc;arith.diffcharRRam pressure variable (G1)stat.fit.paramdoublelogVs[1.3/3.2] Log velocitylog(km.s**-1)phys.velocfloatnH[0.004/251200] Hydrogen densitycm**-3phys.densitydoublePsiHbH{beta} photon production parameter (1)phys.ionizParam.raddoublePsiHaH{alpha} photon production parameter (1)phys.ionizParam.raddoublePhRatio[3.9/8.1] Ratio of H{beta} to H{alpha} photon production parametersmeta.notefloatIntRatio[2.9/6] Ratio of H{beta} to H{alpha} intensitiesspect.line.intensity;arith.ratiofloatAllDisplay all data for the same etaM, MA, R and logVsmeta.ref.urlchar