HALOCalculator Class Reference

Class for calculating the properties of NFW dark matter halos at a specified redshift and mass. More...

#include <halo.h>

Collaboration diagram for HALOCalculator:

Public Member Functions
	HALOCalculator (COSMOLOGY *co, double mass, double redshift)
	Constructor initializing a NFW-halo.
double	getMass ()
double	getZ ()
double	getRvir (int caseunit=0)
	Virial radius of the halo in physical Mpc.
double	getR200 ()
	Radius in physical Mpc at which the enclosed density reach 200 times the critical value at that redshift.
double	getConcentration (int caseunit=0, double alpha0=-0.1)
	The halo concentration according to Zhao et al. 2009 is returned, if the integer 1 is given the concentration according to Munoz-Cuartas et al. 2011 is returned if 2 the concentration according to Giocoli et al. 2012 is returned is returned.
double	getFormationTime (double f=0.5)
	The median time at which the main halo progenitor assembles 50% of the halo mass, if 0<f<1 is given, is returned the redshift at which this fraction is assembled.
double	getFormationRedshift (double f=0.5)
	The median redshift at which the main halo progenitor assembles 50% of the halo mass, if 0<f<1 is given, is returned the redshift at which this fraction is assembled.
void	reset (double, double)
	Reset halo mass and redshift.

Static Public Member Functions
static double	MosterStellarMassFraction (double Mtotal)
	returns the fraction of halo+galaxy in stars according to from Moster et al. 2010ApJ...710..903M

Protected Attributes
COSMOLOGY *	co
double	m
double	z
double	R200
double	Rvir
double	Omz
double	Omo
double	Oml
double	sigma2M
double	deltac0

Detailed Description

Class for calculating the properties of NFW dark matter halos at a specified redshift and mass.

Constructor & Destructor Documentation

HALOCalculator()

HALOCalculator::HALOCalculator	(	COSMOLOGY *	cos,
		double	mass,
		double	redshift )

Constructor initializing a NFW-halo.

Parameters

cos	pointer to a COSMOLOGY
mass	halo mass in M_sun/h TODO Carlo: Is this really M_sun/h
redshift	redshift

Member Function Documentation

getConcentration()

double HALOCalculator::getConcentration	(	int	caseunit = 0,
		double	alpha0 = -0.1 )

The halo concentration according to Zhao et al. 2009 is returned, if the integer 1 is given the concentration according to Munoz-Cuartas et al. 2011 is returned if 2 the concentration according to Giocoli et al. 2012 is returned is returned.

Parameters

caseunit	set relation used - (0) Zhao et al. 2009, (1) Munoz-Cuartas et al. 2011 (2) Giocoli et al. 2012 (3) power-law c-m relation
alpha0	power-law slope if caseunit == 3

getRvir()

double HALOCalculator::getRvir

(

int

caseunit = 0

)

Virial radius of the halo in physical Mpc.

Parameters

caseunit

by default uses the Brayan and Norman fit, if equal to 1 uses the fit by Felix and Stoer

MosterStellarMassFraction()

double HALOCalculator::MosterStellarMassFraction ( double Mtotal )

static

returns the fraction of halo+galaxy in stars according to from Moster et al. 2010ApJ...710..903M

Parameters

Mtotal

total mass of halo+galaxy in solar masses

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The documentation for this class was generated from the following files:

• CosmoLib/include/halo.h
• CosmoLib/halo.cpp