The star class
This class is the main data structure of this package. it represents an
initially unclassified YSO to which the standard classification is
applied to. To create a new instance of the star class a astropy
Table.Row object is used. It holds the photometric data for the
given source. The data should consist of spectral flux densities given
in Jansky (\([F_\nu] = \mathrm{Jy}\)) and so are the errors
(\([\Delta F_\nu] = \mathrm{Jy}\)). To perform the line fitting
necessary to determine the spectral index the wavelength at which each
flux density measurement is taken is also needed and must be provided in
microns (\([\lambda] = \mu\mathrm{m}\)).