SpecData

class measure_extinction.stardata.SpecData(type)

Bases: object

Spectroscopic data (used by StarData)

Attributes:

wavesarray of floats

wavelengths

fluxesarray of floats

fluxes

uncsarray of floats

uncertainties on the fluxes

nptsarray of floats

number of measurements contributing to the flux points

n_wavesint

number of wavelengths

wmin, wmaxfloats

wavelength min and max

Parameters:

type: string

descriptive string of type of data (e.g., IUE, FUSE, IRS)

Methods Summary

read_fuse(line[, path])	Read in FUSE spectra
read_irs(line[, path, use_corfac, corfac])	Read in Spitzer/IRS spectra
read_iue(line[, path])	Read in IUE spectra
read_miri_ifu(line[, path])	Read in Webb/MRS IFU spectra
read_spectra(line[, path])	Read spectra from a FITS file
read_spex(line[, path, use_corfac, corfac])	Read in SpeX spectra
read_stis(line[, path])	Read in STIS spectra
rebin_constres(waverange, resolution)	Rebin the spectrum to a fixed spectral resolution and min/max wavelength range.

Methods Documentation

read_fuse(line, path='./')

Read in FUSE spectra

Converts the wavelengths from Anstroms to microns

Parameters:

linestring

formatted line from DAT file example: ‘STIS = hd029647_fuse.fits’

pathstring, optional

location of the FITS files path

Returns:

Updates self.(file, wave_range, waves, flux, uncs, npts, n_waves)

read_irs(line, path='./', use_corfac=True, corfac=None)

Read in Spitzer/IRS spectra

Correct the IRS spectra if the appropriate corfacs are present in the DAT file. Does a multiplicative correction that can include a linear term if corfac_irs_zerowave and corfac_irs_slope factors are present. Otherwise, just apply a multiplicative factor based on corfac_irs.

Parameters:

linestring

formatted line from DAT file example: ‘IRS = hd029647_irs.fits’

pathstring, optional

location of the FITS files path

corfacdict of key: coefficients

keys identify the spectrum to be corrected and how

Returns:

Updates self.(file, wave_range, waves, flux, uncs, npts, n_waves)

read_iue(line, path='./')

Read in IUE spectra

Removes data with wavelengths > 3200 A Converts the wavelengths from Anstroms to microns

Parameters:

linestring

formatted line from DAT file example: ‘IUE = hd029647_iue.fits’

pathstring, optional

location of the FITS files path

Returns:

Updates self.(file, wave_range, waves, flux, uncs, npts, n_waves)

read_miri_ifu(line, path='./')

Read in Webb/MRS IFU spectra

Parameters:

linestring

formatted line from DAT file example: ‘IRS = hd029647_irs.fits’

pathstring, optional

location of the FITS files path

Returns:

Updates self.(file, wave_range, waves, flux, uncs, npts, n_waves)

read_spectra(line, path='./')

Read spectra from a FITS file

FITS file has a binary table in the 1st extension Header needs to have:

• wmin, wmax : min/max of wavelengths in file

Expected columns are:

• wave

• flux

• sigma [uncertainty in flux units]

• npts [number of observations include at this wavelength]

Parameters:

linestring

formatted line from DAT file example: ‘IUE = hd029647_iue.fits’

pathstring, optional

location of the FITS files path

Returns:

Updates self.(file, wave_range, waves, flux, uncs, npts, n_waves)

read_spex(line, path='./', use_corfac=True, corfac=None)

Read in SpeX spectra

Parameters:

linestring

formatted line from DAT file example: ‘SpeX = hd029647_spex.fits’

pathstring, optional

location of the FITS files path

corfacdict of key: coefficients

keys identify the spectrum to be corrected and how

Returns:

Updates self.(file, wave_range, waves, flux, uncs, npts, n_waves)

read_stis(line, path='./')

Read in STIS spectra

Converts the wavelengths from Anstroms to microns

Parameters:

linestring

formatted line from DAT file example: ‘STIS = hd029647_stis.fits’

pathstring, optional

location of the FITS files path

Returns:

Updates self.(file, wave_range, waves, flux, uncs, npts, n_waves)

rebin_constres(waverange, resolution)

Rebin the spectrum to a fixed spectral resolution and min/max wavelength range.

Parameters:

waverange2 element array of astropy Quantities

Min/max of wavelength range with units

resolutionfloat

Spectral resolution of rebinned spectrum

Returns:

measure_extinction SpecData

Object with rebinned spectrum