SPECTRA

A tiny (and growing, depending on my needs) python module for analyses of Spectra in python.

INSTALLATION

You can install the package via pip:

pip install git+https://github.com/AstroTeutloff/spectra.git

or by cloning the repository:

git clone https://github.com/AstroTeutloff/spectra.git
cd spectra
pip install -e .

USE

The module is split up into "named" Spectra and the dataclass Spectrum. The named spectra are instantiated from a file and usually hold not just the spectral data (i.e. wavelengths, fluxes, flux uncertainties) in fields usually called spectrum, or spectra (check the implementation on the case-by-case), but also logistical information (e.g. the FITS header).

Explicit calculations are not performed with the named spectra classes, the Spectrum class has a suite of commonly used methods for spectra (redshift, adding two spectra, multiplying by a scalar factor)

The TransitionLine dataclass is also there, I'm not super sure what to do with it yet, but its tested and can be used for visualisation purposes.

PLOTTING

The named classes have a plot_spectrum() method.

import matplotlib.pyplot as plt
import spectra as sp
sdss_obj = sp.SDSSSpectrum("YOUR_SDSS_SPEC.fits")
_ = sdss_obj.plot_spectrum()
plt.show()

NOTABLE CHANGES

• As of v0.1.0:
  • Module no longer named simplespec, new name spectra
  • SDSSSpectrum no longer supports fitting the continuum. If need arises, it will be implemented in the Spectrum dataclass itself.
  • SDSSSpectrum no longer supports masking the Spectrum edges. This might be refactored into the Spectrum dataclass.
  • SDSSSpectrum no longer has QTables as its spectra and coadd fields, these are now Spectrum objects.
  • BaseSpectrum no longer exists, because I didn't have a reason to keep it around.

CONTRIBUTION

If you have ideas and/or improvements, feel free to open a PR! :)

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brainmade