parameters.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Default parameters for Galacticus v0.9.4 -->
<!-- 30-October-2011                          -->
<parameters>
  <formatVersion>2</formatVersion>
  <lastModified revision="165490f4968c699f7e5bb73ef60bcb7e626f51e6"/>

  <!-- Component selection -->
  <componentBasic value="standard"/>
  <componentBlackHole value="standard">
    <heatsHotHalo value="true"/>
    <efficiencyWind value="0.0024"/>
    <efficiencyWindScalesWithEfficiencyRadiative value="true"/>
    <bondiHoyleAccretionEnhancementHotHalo value="6.0"/>
    <bondiHoyleAccretionEnhancementSpheroid value="5.0"/>
    <bondiHoyleAccretionTemperatureSpheroid value="100"/>
    <bondiHoyleAccretionHotModeOnly value="true"/>
  </componentBlackHole>
  <componentDarkMatterProfile value="scale"/>
  <componentDisk value="standard">
    <toleranceAbsoluteMass value="1.0e-6"/>
    <massDistributionDisk value="exponentialDisk">
      <dimensionless value="true"/>
    </massDistributionDisk>
  </componentDisk>
  <componentHotHalo value="standard">
    <fractionLossAngularMomentum value="0.3"/>
    <starveSatellites value="false"/>
    <efficiencyStrippingOutflow value="0.1"/>
    <trackStrippedGas value="true"/>
  </componentHotHalo>
  <componentSatellite value="standard"/>
  <componentSpheroid value="standard">
    <ratioAngularMomentumScaleRadius value="0.5"/>
    <efficiencyEnergeticOutflow value="1.0e-2"/>
    <toleranceAbsoluteMass value="1.0e-6"/>
    <massDistributionSpheroid value="hernquist">
      <dimensionless value="true"/>
    </massDistributionSpheroid>
  </componentSpheroid>
  <componentSpin value="scalar"/>

  <!-- Cosmological parameters and options -->
  <cosmologyFunctions value="matterLambda"/>
  <cosmologyParameters value="simple">
    <HubbleConstant value="67.36000"/>
    <!-- Planck 2018; arXiv:1807.06211 -->
    <OmegaMatter value=" 0.31530"/>
    <!-- Planck 2018; arXiv:1807.06211 -->
    <OmegaDarkEnergy value=" 0.68470"/>
    <!-- Planck 2018; arXiv:1807.06211 -->
    <OmegaBaryon value=" 0.04930"/>
    <!-- Planck 2018; arXiv:1807.06211 -->
    <temperatureCMB value=" 2.72548"/>
  </cosmologyParameters>

  <!-- Power spectrum options -->
  <cosmologicalMassVariance value="filteredPower">
    <sigma_8 value="0.8111"/>
    <!-- Planck 2018; arXiv:1807.06211 -->
  </cosmologicalMassVariance>

  <transferFunction value="eisensteinHu1999">
    <neutrinoNumberEffective value="3.046"/>
    <neutrinoMassSummed value="0.000"/>
  </transferFunction>
  <powerSpectrumPrimordial value="powerLaw">
    <index value="0.9649"/>
    <!-- Planck 2018; arXiv:1807.06211 -->
    <wavenumberReference value="1.0000"/>
    <running value="0.0000"/>
    <!-- Planck 2018; arXiv:1807.06211 -->
  </powerSpectrumPrimordial>
  <powerSpectrumPrimordialTransferred value="simple"/>

  <!-- Structure formation options -->
  <linearGrowth value="collisionlessMatter"/>
  <haloMassFunction value="tinker2008"/>
  <criticalOverdensity value="sphericalCollapseClsnlssMttrCsmlgclCnstnt"/>
  <virialDensityContrast value="sphericalCollapseClsnlssMttrCsmlgclCnstnt"/>

  <!-- Merger tree building options -->
  <mergerTreeConstructor value="build"/>
  <mergerTreeBuilder value="cole2000">
    <accretionLimit value="0.1"/>
    <mergeProbability value="0.1"/>
  </mergerTreeBuilder>
  <mergerTreeBranchingProbability value="parkinsonColeHelly">
    <G0 value="+0.57"/>
    <gamma1 value="+0.38"/>
    <gamma2 value="-0.01"/>
    <accuracyFirstOrder value="+0.10"/>
  </mergerTreeBranchingProbability>
  <mergerTreeBuildMassDistribution value="powerLaw"/>

  <!-- Substructure hierarchy options -->
  <mergerTreeNodeMerger value="singleLevelHierarchy"/>

  <!-- Dark matter halo structure options -->
  <darkMatterProfileDMO value="NFW"/>
  <darkMatterProfileConcentration value="gao2008"/>
  <darkMatterProfileScaleRadius value="concentrationLimiter">
    <concentrationMinimum value="  4.0"/>
    <concentrationMaximum value="100.0"/>
    <darkMatterProfileScaleRadius value="concentration"/>
  </darkMatterProfileScaleRadius>
  <haloSpinDistribution value="bett2007">
    <alpha value="2.509"/>
    <lambda0 value="0.04326"/>
  </haloSpinDistribution>

  <!-- Halo accretion options -->
  <accretionHalo value="simple">
    <redshiftReionization value="10.5"/>
    <velocitySuppressionReionization value="35.0"/>
  </accretionHalo>

  <!-- Hot halo gas cooling model options -->
  <hotHaloMassDistribution value="betaProfile"/>
  <hotHaloTemperatureProfile value="virial"/>
  <hotHaloMassDistributionCoreRadius value="virialFraction">
    <coreRadiusOverVirialRadius value="0.3"/>
  </hotHaloMassDistributionCoreRadius>
  <coolingSpecificAngularMomentum value="constantRotation">
    <sourceAngularMomentumSpecificMean value="hotGas"/>
    <sourceNormalizationRotation value="hotGas"/>
  </coolingSpecificAngularMomentum>
  <hotHaloOutflowReincorporation value="haloDynamicalTime">
    <multiplier value="5.0"/>
  </hotHaloOutflowReincorporation>

  <coolingFunction value="atomicCIECloudy"/>
  <coolingRadius value="simple"/>
  <coolingRate value="whiteFrenk1991">
    <velocityCutOff value="10000"/>
  </coolingRate>
  <coolingTime value="simple">
    <degreesOfFreedom value="3.0"/>
  </coolingTime>
  <coolingTimeAvailable value="whiteFrenk1991">
    <ageFactor value="0"/>
  </coolingTimeAvailable>
  <!-- Hot halo ram pressure stripping options -->
  <hotHaloRamPressureStripping value="font2008"/>
  <hotHaloRamPressureForce value="font2008"/>
  <hotHaloRamPressureTimescale value="ramPressureAcceleration"/>
  <!-- Galactic structure solver options -->
  <galacticStructureSolver value="equilibrium"/>
  <darkMatterProfile value="adiabaticGnedin2004">
    <A value="0.73"/>
    <omega value="0.7"/>
  </darkMatterProfile>
  <!-- Star formation rate options -->
  <starFormationRateDisks value="intgrtdSurfaceDensity"/>
  <starFormationRateSurfaceDensityDisks value="krumholz2009">
    <frequencyStarFormation value="0.385"/>
    <clumpingFactorMolecularComplex value="5.000"/>
    <molecularFractionFast value="true"/>
  </starFormationRateSurfaceDensityDisks>
  <starFormationRateSpheroids value="timescale">
    <starFormationTimescale value="dynamicalTime">
      <efficiency value="0.04"/>
      <exponentVelocity value="2.0"/>
      <timescaleMinimum value="0.001"/>
    </starFormationTimescale>
  </starFormationRateSpheroids>

  <!-- Stellar populations options -->
  <stellarPopulationProperties value="instantaneous"/>
  <stellarPopulationSpectra value="FSPS"/>
  <stellarPopulationSelector value="fixed"/>

  <initialMassFunction value="chabrier2001"/>
  <stellarPopulation value="standard">
    <recycledFraction value="0.46"/>
    <metalYield value="0.035"/>
  </stellarPopulation>

  <!-- AGN feedback options -->
  <hotHaloExcessHeatDrivesOutflow value="true"/>
  <!-- Accretion disk properties -->
  <accretionDisks value="switched">
    <accretionRateThinDiskMaximum value="0.30"/>
    <accretionRateThinDiskMinimum value="0.01"/>
    <scaleADAFRadiativeEfficiency value="true"/>
    <accretionDisksShakuraSunyaev value="shakuraSunyaev"/>
    <accretionDisksADAF value="ADAF">
      <efficiencyRadiationType value="thinDisk"/>
      <adiabaticIndex value="1.444"/>
      <energyOption value="pureADAF"/>
      <efficiencyRadiation value="0.01"/>
      <viscosityOption value="fit"/>
    </accretionDisksADAF>
  </accretionDisks>

  <!-- Black hole options -->
  <blackHoleBinaryMerger value="rezzolla2008"/>
  <!-- Galaxy merger options -->
  <virialOrbit value="benson2005"/>
  <satelliteMergingTimescales value="jiang2008">
    <timescaleMultiplier value="0.75"/>
  </satelliteMergingTimescales>
  <mergerMassMovements value="simple">
    <destinationGasMinorMerger value="spheroid"/>
    <massRatioMajorMerger value="0.25"/>
  </mergerMassMovements>
  <mergerRemnantSize value="cole2000">
    <energyOrbital value="1"/>
  </mergerRemnantSize>
  <!-- Node evolution and physics -->
  <nodeOperator value="multi">
    <!-- Cosmological epoch -->
    <nodeOperator value="cosmicTime"/>
    <!-- DMO evolution -->
    <nodeOperator value="DMOInterpolate"/>
    <!-- Halo concentrations -->
    <nodeOperator value="darkMatterProfileScaleSet"/>
    <nodeOperator value="darkMatterProfileScaleInterpolate"/>
     <!-- Halo spins -->
    <nodeOperator value="haloAngularMomentumRandom">
      <factorReset value="2.0"/>
    </nodeOperator>
    <nodeOperator value="haloAngularMomentumInterpolate"/>
    <!-- Satellite evolution -->
    <nodeOperator value="satelliteMergingTime"/>
    <nodeOperator value="satelliteMassLoss"/>
    <!-- Star formation -->
    <nodeOperator value="starFormationDisks"/>
    <nodeOperator value="starFormationSpheroids"/>
    <!--Stellar feedback outflows-->
    <nodeOperator value="stellarFeedbackDisks">
      <stellarFeedbackOutflows value="rateLimit">
        <timescaleOutflowFractionalMinimum value="0.001"/>
        <stellarFeedbackOutflows value="powerLaw">
          <velocityCharacteristic value="250.0"/>
          <exponent value="3.5"/>
        </stellarFeedbackOutflows>
      </stellarFeedbackOutflows>
    </nodeOperator>
    <nodeOperator value="stellarFeedbackSpheroids">
      <stellarFeedbackOutflows value="rateLimit">
        <timescaleOutflowFractionalMinimum value="0.001"/>
        <stellarFeedbackOutflows value="powerLaw">
          <velocityCharacteristic value="100.0"/>
          <exponent value="3.5"/>
        </stellarFeedbackOutflows>
      </stellarFeedbackOutflows>
    </nodeOperator>
    <!-- Bar instability in galactic disks -->
    <nodeOperator value="barInstability">
      <galacticDynamicsBarInstability value="efstathiou1982">
	<stabilityThresholdGaseous value="0.7"/>
	<stabilityThresholdStellar value="1.1"/>
      </galacticDynamicsBarInstability>
    </nodeOperator>
    <nodeOperator value="blackHolesSeed">
      <blackHoleSeeds value="fixed">
	<mass value="100"/>
	<spin value="0"/>
      </blackHoleSeeds>
    </nodeOperator>
  </nodeOperator>

  <!-- Numerical tolerances -->
  <mergerTreeNodeEvolver value="standard">
    <odeToleranceAbsolute value="0.01"/>
    <odeToleranceRelative value="0.01"/>
  </mergerTreeNodeEvolver>

  <mergerTreeEvolver value="standard">
    <timestepHostAbsolute value="1.0"/>
    <timestepHostRelative value="0.1"/>
  </mergerTreeEvolver>

  <!-- Output options -->
  <mergerTreeOutputter value="standard">
    <outputReferences value="false"/>
  </mergerTreeOutputter>

</parameters>