Depends on the mass of the host star.
It could be:-
nebula
What are the small dense remains of a high mass star
The remains of a massive star pulled into a small volume by gravity?
It can be a black hole or a Neutron Star
Neutron star
A White Dwarf Star remains.
nebula
nebula
A neutron star or a pulsar, or a black hole.
What are the small dense remains of a high mass star
The remains of a massive star pulled into a small volume by gravity?
A red dwarf star.
A T Tauri star is sort of a precursor of a star, or about to become a "real" star. Therefore, it can last anywhere from a few million to several trillion years before it runs out of energy, depending on its mass.
Precursor
It can be a black hole or a Neutron Star
ARPNET is the precursor of the modern Internet.ARPNET is the precursor of the modern Internet.ARPNET is the precursor of the modern Internet.ARPNET is the precursor of the modern Internet.
A neutron star is already the remains of a massive star that has run out of fuel.
A White Dwarf Star remains.