'Converts this table column to a `~astropy.units.Quantity` object with
the requested units.
Parameters
unit : `~astropy.units.Unit` or str
The unit to convert to (i.e., a valid argument to the
:meth:`astropy.units.Quantity.to` method).
equivalencies : list of equivalence pairs, optional
Equivalencies to use for this conversion.  See
:meth:`astropy.units.Quantity.to` for more details.
Returns
quantity : `~astropy.units.Quantity`
A quantity object with the contents of this column in the units
``unit``.'

def to(self, unit, equivalencies=[], **kwargs):

    return self.quantity.to(unit, equivalencies)
