Question

Is there a mass relation of the core left behind after ejection in a red giant?

Answer 1

I don't know refer google you will get it

Answer 2

Assuming that you have the mass of the star prior to the ejection of non-core material, is there any relation that can be used to approximate the mass of the resulting left behind core which will later go on to become a white dwarf, neutron star, or other similar core object?

EDIT: I did attempt to find such a relation on my own, but only found unrelated relations or simply that the core exists. I was unable to locate on my own any relation between mass and core mass.

hope it helps