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The SKIRT project
advanced radiative transfer for astrophysics
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The SKIRT project
advanced radiative transfer for astrophysics
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#include <BruzualCharlotSEDFamily.hpp>
Public Types | |
| enum class | IMF : int { Chabrier , Salpeter } |
| enum class | Resolution : int { Low , High } |
Public Member Functions | |
| BruzualCharlotSEDFamily (SimulationItem *parent, IMF imf, Resolution resolution) | |
| double | cdf (Array &lambdav, Array &pv, Array &Pv, const Range &wavelengthRange, const Array ¶meters) const override |
| IMF | imf () const |
| Range | intrinsicWavelengthRange () const override |
| vector< SnapshotParameter > | parameterInfo () const override |
| Resolution | resolution () const |
| double | specificLuminosity (double wavelength, const Array ¶meters) const override |
| 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 | |
| BruzualCharlotSEDFamily () | |
| 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 () |
| Protected Member Functions inherited from Item | |
| Item () | |
Private Types | |
| using | BaseType |
| using | ItemType |
Private Attributes | |
| IMF | _imf |
| Resolution | _resolution |
| StoredTable< 3 > | _table |
Friends | |
| class | ItemRegistry |
An instance of the BruzualCharlotSEDFamily class represents the family of Bruzual & Charlot 2003 SEDs for single stellar populations (SSPs), parameterized on metallicity and age and scaled by the initial mass of the SSP (Bruzual & Charlot 2003, RAS 344, 1000-1026). We use the original 2003 Padova1994/Chabrier and Padova1994/Salpeter models, the two recommended models. In other words, the SED family is available for two assumed initial mass functions (Chabrier and Salpeter). Each of those families can be loaded in two wavelength resolution versions, with respectively 1221 and 6900 wavelength points over a wavelength range from 0.009 \(\mu\mathrm{m}\) to 160 \(\mu\mathrm{m}\). The spectral resolution for each version is shown in the figure below. The low-resolution version uses less resources and is sufficient for most purposes. However, if the model under study zooms in on narrow wavelength ranges in the optical regime, the high-resolution version may be preferable.
The data were downloaded from http://www.bruzual.org/~gbruzual/bc03/ 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):
\[ M_\mathrm{init}\,(\mathrm{M}_\odot) \quad Z\,(\mathrm{dimensionless}) \quad t\,(\mathrm{yr}) \]
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strong |
The enumeration type indicating the assumed initial mass function (IMF).
Chabrier : "Chabrier IMF".
Salpeter : "Salpeter IMF".
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strong |
The enumeration type indicating the wavelength resolution.
Low : "Low wavelength resolution (1221 points)".
High : "High wavelength resolution (6900 points)".
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inlineprotected |
Default constructor for concrete Item subclass BruzualCharlotSEDFamily: "a Bruzual-Charlot SED family for single stellar populations".
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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.
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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.
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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 "Chabrier".
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overridevirtual |
This function returns the intrinsic wavelength range of the SED family. It retrieves this range from the underlying stored table.
Implements SEDFamily.
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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.
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inline |
This function returns the value of the discoverable Resolution enumeration property resolution: "the wavelength resolution".
The default value for this property is given by the conditional value expression "Low".
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overrideprotectedvirtual |
This function opens the appropriate resource file (in SKIRT stored table format).
Reimplemented from SimulationItem.
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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.