SourceMultiAnaGalaxy Class Reference

Source that represents an analytic galaxy surface brightness model. It encapsulates a OverzierSource which is a model from R.Overzier et al. 2012 with a bulge and a disk. More...

#include <sourceAnaGalaxy.h>

Inheritance diagram for SourceMultiAnaGalaxy:

Collaboration diagram for SourceMultiAnaGalaxy:

Public Member Functions
	SourceMultiAnaGalaxy (PosType mag, PosType mag_bulge, Band band, PosType zero_point, PosType Reff, PosType Rdisk, PosType PA, PosType inclination, PosType my_z, PosType *my_theta, Utilities::RandomNumbers_NR &ran)
	Source model for a single analytic galaxy model.
	SourceMultiAnaGalaxy (SourceOverzierPlus *my_galaxy)
PosType	SurfaceBrightness (const PosType *x) const
	Surface brightness of current galaxy.
PosType	getTotalFlux () const
	Total flux coming from the current galaxy in erg/sec/Hz/cm^2.
void	printSource ()
	Print info on current source parameters.
void	AddAGalaxy (SourceOverzierPlus *my_galaxy)
SourceOverzierPlus &	setIndex (std::size_t i)
	Used to change the "current" source that is returned when the surface brightness is subsequently called. It also returns a reference to the particular OverzierSource source model.
SourceOverzierPlus &	operator[] (std::size_t i)
	The indexing operator can be used to change the "current" source that is returned when the surface brightness is subsequently called. It also returns a reference to the particular OverzierSource source model.
const SourceOverzierPlus &	operator[] (std::size_t i) const
SourceOverzierPlus &	CurrentGalaxy ()
PosType	getZ () const
	Return redshift of current source.
PosType	getRadius () const
void	setZ (PosType my_z)
	Set redshift of current source. Only changes the redshift while leaving position fixed.
void	resetBand (Band my_band)
unsigned long	getID ()
Point_2d	getTheta () const
	Return angular position of current source.
void	setTheta (PosType my_theta[2])
	Set angular position of current source.
void	setTheta (PosType my_x, PosType my_y)
void	setTheta (const Point_2d &p)
std::size_t	getNumberOfGalaxies () const
void	multiplier (PosType z, PosType mag_cut, int Multiplicity, Utilities::RandomNumbers_NR &ran)
	Artificially increase the number of sources to increase the incidence of strong lenses.
void	sortInRedshift ()
	Sort the sources by redshift in assending order.
void	sortInMag (Band tmp_band)
	Sort the sources by magnitude in assending order.
void	sortInID ()
	Sort the sources by magnitude in assending order.
PosType	getFOV ()
	returns field-of-view in deg^2 assuming region is square
std::size_t	findclosestonsky (PosType theta[], PosType *radius)
	Finds the closest source to the position theta[] on the sky in Cartesian distance. Returns the index of that source and its distance from theta[].
void	findclosestonsky (PosType theta[], std::vector< PosType > &radius, std::vector< size_t > &indexes)
	finds closest sources to theta on umlensed sky. "radius" should have a size equal ti the number wanted
void	findonsky (PosType theta[], float radius, std::list< size_t > &indexes)
	finds objects within radios of theta[] on umlensed sky.
void	findnear (PosType theta[], float radius, std::list< size_t > &indexes, PosType z_range[])
	finds objects within radios of theta[] on unlensed sky and within a redshift range.
Public Member Functions inherited from Source
	Source (PosType r, Point_2d x, PosType z, PosType SBlimit, PosType zero_point)
	shell constructor
	Source (const Source &s)
Source &	operator= (const Source &s)
double	SBlimit_magarcsec (double limit)
	convert mag/arcsec^2 to flux units
PosType	getSBlimit ()
	Gets sb_limit in erg/cm^2/sec/rad^2/Hz.
PosType	getSBlimit_magarcsec ()
	Gets sb_limit in mag/arcsec^2.
PosType	getZ () const
	Redshift of source.
void	setZ (PosType my_z)
PosType	getRadius () const
	Radius of source in radians.
void	setRadius (PosType my_radius)
	Reset the radius of the source in radians.
Point_2d	getTheta () const
	position of source in radians
void	getTheta (PosType *x) const
	position of source in radians
void	getTheta (Point_2d &x) const
	position of source in radians
void	setTheta (PosType *xx)
	Reset the position of the source in radians.
void	setTheta (PosType my_x, PosType my_y)
void	setTheta (const Point_2d &p)
void	setSBlimit (float limit)
	Sets sb_limit in erg/cm^2/sec/rad^2/Hz.
void	setMagZeroPoint (float zeropoint)
double	getMagZeroPoint ()
PosType	changeFilter (std::string filter_in, std::string filter_out, std::string sed)
	Calculates the difference in magnitude when changing the observing filter.
PosType	integrateFilter (std::vector< PosType > wavel_fil, std::vector< PosType > fil)
	Calculates the integral of the filter curve given as an array of (x,y) values.
PosType	integrateFilterSED (std::vector< PosType > wavel_fil, std::vector< PosType > fil, std::vector< PosType > wavel_sed, std::vector< PosType > sed)
	Calculates the integral of the sed multiplied by the filter curve.
double	TEST_surface_brightness (double res, int N)
	test if flux in pixels matches total flux
long	getID () const
void	setID (long i)

Additional Inherited Members
Static Public Member Functions inherited from Source
static PosType *	getx (Source &source)
Protected Member Functions inherited from Source
double	flux_to_mag (double flux) const
Protected Attributes inherited from Source
PosType	source_r
	charactoristic source size
Point_2d	source_x
	center of source
PosType	zsource
	redshift of source
PosType	sb_limit
long	id
double	mag_zero_point

Detailed Description

Source that represents an analytic galaxy surface brightness model. It encapsulates a OverzierSource which is a model from R.Overzier et al. 2012 with a bulge and a disk.

  Input parameters are only needed if the third constructor is used so that an input catalog is read
  Input Parameters:

  source_input_galaxy_file       file with catalog of galaxies
  source_band             Band that these sources are to be observed in. Must be one of the following SDSS_U,SDSS_G,SDSS_R,SDSS_I,SDSS_Z,J,H,Ks,IRAC1,IRAC2
  source_band
  source_mag_limit        magnitude limit
  source_sb_limit         Minimum surface brightness limit for truncating sources.  By default it is 30. mag/sq. arcsec

*

Constructor & Destructor Documentation

SourceMultiAnaGalaxy() [1/2]

SourceMultiAnaGalaxy::SourceMultiAnaGalaxy	(	PosType	mag,
		PosType	mag_bulge,
		Band	band,
		PosType	zero_point,
		PosType	Reff,
		PosType	Rdisk,
		PosType	PA,
		PosType	inclination,
		PosType	my_z,
		PosType *	my_theta,
		Utilities::RandomNumbers_NR &	ran )

Source model for a single analytic galaxy model.

Parameters

mag	Total magnitude
mag_bulge	magnitude of Bulge
zero_point	magnitude zero point
Reff	Bulge half light radius (arcs)
Rdisk	disk scale hight (arcs)
PA	Position angle (radians)
inclination	inclination of disk (radians)
my_z	redshift of source
my_theta	position on the sky

SourceMultiAnaGalaxy() [2/2]

SourceMultiAnaGalaxy::SourceMultiAnaGalaxy

(

SourceOverzierPlus *

my_galaxy

)

Constructor for passing in a pointer to the galaxy model or a list of galaxies instead of constructing it internally. Useful when there is a list of pre-allocated sources. The redshifts and sky positions need to be set separately.

Member Function Documentation

getTotalFlux()

PosType SourceMultiAnaGalaxy::getTotalFlux ( ) const

inlinevirtual

Total flux coming from the current galaxy in erg/sec/Hz/cm^2.

Implements Source.

multiplier()

void SourceMultiAnaGalaxy::multiplier	(	PosType	z,
		PosType	mag_cut,
		int	multiplicity,
		Utilities::RandomNumbers_NR &	ran )

Artificially increase the number of sources to increase the incidence of strong lenses.

Sources above the limiting redshift and below the limiting magnitude are copied and given random position angles, inclinations and positions within the field of view. The field of view is determined directly from the range of already existing source positions. The field is assumed to be rectangular.

Parameters

z	limiting redshift, only sources above this redshift are copied
mag_cut	limiting magnitude, only sources with magnitudes below this limit will be copied
multiplicity	the number of times each of these sources should be multiplied
ran	random number seed

printSource()

void SourceMultiAnaGalaxy::printSource ( )

virtual

Print info on current source parameters.

Implements Source.

SurfaceBrightness()

PosType SourceMultiAnaGalaxy::SurfaceBrightness ( const PosType * x ) const

inlinevirtual

Surface brightness of current galaxy.

Implements Source.

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

• SLsimLib/include/sourceAnaGalaxy.h
• SLsimLib/AnalyticNSIE/sourceAnaGalaxy.cpp