milespy.stellar_library.StellarLibrary

class milespy.stellar_library.StellarLibrary(source='MILES_STARS', version='9.1')

Bases: Repository

Single stars library.

models

Spectra of all the stars that form the loaded library

Type:: Spectra

source

Name of input library being used

Type:: str

version

Version number of the library

Type:: str

Attributes:

models

Methods

`closest`(teff, logg, FeH[, MgFe])	Gets closest star in database for given set of parameters
`get_starname`([id])	Gets a starname in database for a given ID
`in_range`(teff_lims, logg_lims, FeH_lims[, ...])	Gets set of stars with parameters range
`interpolate`(teff, logg, FeH[, MgFe, ...])	Interpolates a star spectrum for given set of parameters using Delaunay triangulation
`resample`(new_wave)	Resample all the models in the library
`search_by_id`([id])	Searches a star in database for a given ID
`trim`(lower, upper)	Trim all the models in the library

__init__(source='MILES_STARS', version='9.1')

Creates an instance of the class

Parameters:

source – Name of input models to use. If none of the options below, it will assume that source is the path to an external model repository file. Valid inputs are MILES_STARS/CaT_STARS/EMILES_STARS
version – Version number of the models

closest(teff, logg, FeH, MgFe=None)

Gets closest star in database for given set of parameters

Parameters:

teff (Quantity) – Desired Teff
logg (Quantity) – Desired Log(g)
FeH (Quantity) – Desired [Fe/H]
MgFe (Optional[Quantity]) – Desired [Mg/Fe]

Returns:

Spectrum from the closest star in the library.

Return type:

Spectra

get_starname(id=None)

Gets a starname in database for a given ID

Parameters:: id – integer with the star ID in database
Return type:: Star name

in_range(teff_lims, logg_lims, FeH_lims, MgFe_lims=None)

Gets set of stars with parameters range

Parameters:

teff_lims (Quantity) – Limits in Teff
logg_lims (Quantity) – Limits in Log(g)
FeH_lims (Quantity) – Limits in [Fe/H]
MgFe_lims (Optional[Quantity]) – Limits in [Mg/Fe]

Returns:

Object instance for stars within parameters range

Return type:

StellarLibrary

interpolate(teff, logg, FeH, MgFe=None, closest=False, simplex=False)

Interpolates a star spectrum for given set of parameters using Delaunay triangulation

Parameters:

teff (Quantity) – Desired Teff
logg (Quantity) – Desired Log(g)
FeH (Quantity) – Desired [Fe/H]
MgFe (Optional[Quantity]) – Desired [Mg/Fe]
closest (bool) – Return the closest spectra, rather than performing the interpolation. If only one interpolation is performed, all the spectra in the simplex vertices are returned.
simplex (bool) – If only one set of input parameters is given, return all the spectra that form part of the simplex used for the interpolation. These spectra have the weights information in their meta dictionary.

Returns:

Interpolated spectrum. If closest == True, return the closest spectra from the repository, rather than doing the interpolation.

Return type:

Spectra

Raises:

RuntimeError – If the values are out of the grid.
ValueError – If the provided parameters do not have the same shape.

resample(new_wave)

Resample all the models in the library

Parameters:: new_wave (Quantity) – Spectral axis with the desired sampling for the spectra