MarastonSEDFamily Class Reference

#include <MarastonSEDFamily.hpp>

Inheritance diagram for MarastonSEDFamily:

Public Types
enum class	IMF : int { Kroupa , Salpeter }

Public Member Functions
	MarastonSEDFamily (SimulationItem *parent, IMF imf)
double	cdf (Array &lambdav, Array &pv, Array &Pv, const Range &wavelengthRange, const Array &parameters) const override
IMF	imf () const
Range	intrinsicWavelengthRange () const override
vector< SnapshotParameter >	parameterInfo () const override
double	specificLuminosity (double wavelength, const Array &parameters) const override
virtual double	cdf (Array &lambdav, Array &pv, Array &Pv, const Range &wavelengthRange, const Array &parameters) const =0
virtual Range	intrinsicWavelengthRange () const =0
virtual vector< SnapshotParameter >	parameterInfo () const =0
virtual double	specificLuminosity (double wavelength, const Array &parameters) const =0
Public Member Functions inherited from SimulationItem
template<class T >
T *	find (bool setup=true) const
template<class T >
T *	interface (int levels=-999999, bool setup=true) const
virtual string	itemName () const
void	setup ()
string	typeAndName () const
Public Member Functions inherited from Item
	Item (const Item &)=delete
virtual	~Item ()
void	addChild (Item *child)
const vector< Item * > &	children () const
virtual void	clearItemListProperty (const PropertyDef *property)
void	destroyChild (Item *child)
virtual bool	getBoolProperty (const PropertyDef *property) const
virtual vector< double >	getDoubleListProperty (const PropertyDef *property) const
virtual double	getDoubleProperty (const PropertyDef *property) const
virtual string	getEnumProperty (const PropertyDef *property) const
virtual int	getIntProperty (const PropertyDef *property) const
virtual vector< Item * >	getItemListProperty (const PropertyDef *property) const
virtual Item *	getItemProperty (const PropertyDef *property) const
virtual string	getStringProperty (const PropertyDef *property) const
int	getUtilityProperty (string name) const
virtual void	insertIntoItemListProperty (const PropertyDef *property, int index, Item *item)
Item &	operator= (const Item &)=delete
Item *	parent () const
virtual void	removeFromItemListProperty (const PropertyDef *property, int index)
virtual void	setBoolProperty (const PropertyDef *property, bool value)
virtual void	setDoubleListProperty (const PropertyDef *property, vector< double > value)
virtual void	setDoubleProperty (const PropertyDef *property, double value)
virtual void	setEnumProperty (const PropertyDef *property, string value)
virtual void	setIntProperty (const PropertyDef *property, int value)
virtual void	setItemProperty (const PropertyDef *property, Item *item)
virtual void	setStringProperty (const PropertyDef *property, string value)
void	setUtilityProperty (string name, int value)
virtual string	type () const

Protected Member Functions
	MarastonSEDFamily ()
void	setupSelfBefore () override
Protected Member Functions inherited from SEDFamily
	SEDFamily ()
Protected Member Functions inherited from SimulationItem
	SimulationItem ()
virtual bool	offersInterface (const std::type_info &interfaceTypeInfo) const
virtual void	setupSelfAfter ()
virtual void	setupSelfBefore ()
Protected Member Functions inherited from Item
	Item ()

Private Types
using	BaseType = SEDFamily
using	ItemType = MarastonSEDFamily

Private Attributes
IMF	_imf
StoredTable< 3 >	_table

Friends
class	ItemRegistry

Detailed Description

An instance of the MarastonSEDFamily class represents the family of Maraston SEDs for single stellar populations (SSPs), parameterized on metallicity and age and scaled by the initial mass of the SSP (Maraston 1998, MNRAS, 300, 872–892). We use both the Kroupa and Salpeter models, in each case for the red horizontal branch morphology (the models for the blue horizontal branch morphology cover only a fraction of the parameter space). In other words, the SED family is available for two assumed initial mass functions (Kroupa and Salpeter).

For metallicities [Z/H] = -1.35, -0.33, 0, 0.35, models are given for ages from 10^3 yr to 15 Gyr. For metallicities [Z/H] = -2.25 and +0.67, only models from 1 to 15 Gyr are provided. These six metallicity values correspond to $Z\approx 0.00011247,0.00089337,0.0093547,0.02,0.04477442,0.09354703$.

The SEDs are tabulated over a wavelength range from 0.009 $\mu \mathrm{m}$ to 160 $\mu \mathrm{m}$ with the spectral resolution shown in the figure below.

The data were downloaded from http://www.icg.port.ac.uk/~maraston/Claudia's_Stellar_Population_Model.html and converted to SKIRT stored table format for inclusion as a resource file. The stored table is opened during setup, and it is subsequently interpolated to the desired parameters and wavelength grid when needed.

When imported from a text column file, the parameters for this SED family must appear in the following order in the specified default units (unless these units are overridden by column header info):

$$M_{\mathrm{i}\mathrm{n}\mathrm{i}\mathrm{t}}({\mathrm{M}}_{\odot })Z(\mathrm{d}\mathrm{i}\mathrm{m}\mathrm{e}\mathrm{n}\mathrm{s}\mathrm{i}\mathrm{o}\mathrm{n}\mathrm{l}\mathrm{e}\mathrm{s}\mathrm{s})t(\mathrm{y}\mathrm{r})$$

Member Enumeration Documentation

IMF

enum class MarastonSEDFamily::IMF : int

strong

The enumeration type indicating the assumed initial mass function (IMF).

Kroupa : "Kroupa IMF" .

Salpeter : "Salpeter IMF" .

Constructor & Destructor Documentation

MarastonSEDFamily() [1/2]

MarastonSEDFamily::MarastonSEDFamily ( )

inlineprotected

Default constructor for concrete Item subclass MarastonSEDFamily : "a Maraston SED family for single stellar populations" .

MarastonSEDFamily() [2/2]

MarastonSEDFamily::MarastonSEDFamily ( SimulationItem *  parent, IMF  imf  )

explicit

This constructor can be invoked programmatically by classes that use a hard-coded SED family (as opposed to selected through the ski file). Before the constructor returns, the newly created object is hooked up as a child to the specified parent in the simulation hierarchy (so it will automatically be deleted), and its setup() function has been called.

Member Function Documentation

cdf()

double MarastonSEDFamily::cdf ( Array &  lambdav, Array &  pv, Array &  Pv, const Range &  wavelengthRange, const Array &  parameters  ) const

overridevirtual

This function constructs both the normalized probability density function (pdf) and the corresponding normalized cumulative distribution function (cdf) for the SED with the specified parameters over the specified wavelength range. The function returns the normalization factor. The number and type of parameters must match the information returned by the parameterInfo() function; if not the behavior is undefined.

Implements SEDFamily.

imf()

MarastonSEDFamily::imf ( ) const

inline

This function returns the value of the discoverable IMF enumeration property imf : "the assumed initial mass function" .

The default value for this property is given by the conditional value expression "Kroupa" .

intrinsicWavelengthRange()

Range MarastonSEDFamily::intrinsicWavelengthRange ( ) const

overridevirtual

This function returns the intrinsic wavelength range of the SED family. It retrieves this range from the underlying stored table.

Implements SEDFamily.

parameterInfo()

vector< SnapshotParameter > MarastonSEDFamily::parameterInfo ( ) const

overridevirtual

This function returns the number and type of parameters used by this particular SED family as a list of SnapshotParameter objects. Each of these objects specifies unit information and a human-readable descripton for the parameter.

Implements SEDFamily.

setupSelfBefore()

void MarastonSEDFamily::setupSelfBefore ( )

overrideprotectedvirtual

This function opens the appropriate resource file (in SKIRT stored table format).

Reimplemented from SimulationItem.

specificLuminosity()

double MarastonSEDFamily::specificLuminosity ( double  wavelength, const Array &  parameters  ) const

overridevirtual

This function returns the specific luminosity $L_{\lambda }$ (i.e. radiative power per unit of wavelength) for the SED with the specified parameters at the specified wavelength, or zero if the wavelength is outside of the SED's intrinsic wavelength range. The number and type of parameters must match the information returned by the parameterInfo() function; if not the behavior is undefined.

Implements SEDFamily.

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

• MarastonSEDFamily.hpp