In a binary star system, an unseen component is found to have 8 solar masses. It would be visible if the system were a normal star, so it must be a collapsed object. Theoretical considerations declare that it must be a
A) black hole.
B) neutron star.
C) white dwarf.
D) brown dwarf.

Question

Quizplus · Accepted Answer

A black hole is the correct answer because an object with 8 solar masses is too massive to be a neutron star or a white dwarf, both of which have maximum mass limits below this value. Brown dwarfs are also not collapsed objects in the context of being remnants of stellar evolution.

In a Binary Star System, an Unseen Component Is Found