qsospec.Spectrum

class qsospec.Spectrum(wave_obs, flux, err, z, metadata=<factory>, mask=None)

Bases: object

Array-only spectrum input for qsospec.

Parameters:

• wave_obs (ndarray)

• flux (ndarray)

• err (ndarray)

• z (float)

• metadata (SpectrumMetadata)

• mask (ndarray | None)

__init__(wave_obs, flux, err, z, metadata=<factory>, mask=None)

Parameters:

• wave_obs (ndarray)

• flux (ndarray)

• err (ndarray)

• z (float)

• metadata (SpectrumMetadata)

• mask (ndarray | None)

Return type:

None

Methods

__init__(wave_obs, flux, err, z[, metadata, ...])
from_arrays(wave, flux[, err, ivar, z, ...])	Build a spectrum from plain arrays.

Attributes

flux_density_scale_to_cgs	Internal compatibility alias for the physical cgs scale.
flux_density_unit	Internal display label for the input f_lambda values.
flux_frame	observed or rest.
flux_scale	Multiplicative scale from input f_lambda to physical cgs.
flux_unit	physical cgs or relative f_lambda.
mask
valid_mask	Finite, positive-error pixels allowed for fitting.
wave_rest	Rest-frame wavelength array.
wave_unit	Wavelength unit label.
wave_obs
flux
err
z
metadata

err: ndarray

flux: ndarray

property flux_density_scale_to_cgs: float | None

Internal compatibility alias for the physical cgs scale.

property flux_density_unit: str

Internal display label for the input f_lambda values.

property flux_frame: str

observed or rest.

Type:

Flux-density frame

property flux_scale: float | None

Multiplicative scale from input f_lambda to physical cgs.

property flux_unit: str

physical cgs or relative f_lambda.

Type:

Flux unit kind

classmethod from_arrays(wave, flux, err=None, ivar=None, z=0.0, wave_frame='observed', mask=None, survey=None, wave_unit=None, flux_unit=None, flux_scale=None, source=None, ra=None, dec=None, galactic_extinction_corrected=False, galactic_extinction=None, metadata=None)

Build a spectrum from plain arrays.

wave_frame may be "observed" or "rest" and declares the frame of both wavelength and F_lambda. Internally the observed wavelength is stored and rest wavelength is derived from z.

Parameters:

• wave (ndarray)

• flux (ndarray)

• err (ndarray | None)

• ivar (ndarray | None)

• z (float)

• wave_frame (str)

• mask (ndarray | None)

• survey (str | None)

• wave_unit (str | None)

• flux_unit (str | None)

• flux_scale (float | None)

• source (str | None)

• ra (float | None)

• dec (float | None)

• galactic_extinction_corrected (bool)

• galactic_extinction (Mapping[str, Any] | None)

• metadata (SpectrumMetadata | None)

Return type:

Spectrum

mask: ndarray | None = None

metadata: SpectrumMetadata

property valid_mask: ndarray

Finite, positive-error pixels allowed for fitting.

wave_obs: ndarray

property wave_rest: ndarray

Rest-frame wavelength array.

property wave_unit: str

Wavelength unit label.

z: float