does anything orbit red giant stars?

Question

I need to know if anything orbits around red giants (stars).

Answer 1

when the sun expands it should swallow the earth ... the outer planets should still be orbiting the sun

we haven't mapped other sun systems although we are starting to detect some planets round other stars .. I assume we will only see planets that are close to the star or very large so as to have an effect on the brightness we see. .. so its probably unknowable whether there are distant planets orbiting (dull) red giants.

Answer 2

i suppose if with the increased gravity of a Red Giant that if objects were to be caught within its gravity well then yes, objects could orbit a RG. but for how long? who knows. I think a RG. here i found something;
(1) Department of Astronomy, University of Pennsylvania, Philadelphia, PA, U.S.A.
Received: 16 April 1985

Abstract The survival of the Jovian planets and their satellites as the Sun becomes a Red Giant is considered. It is found that the Jovian planets would not lose any matter - not even hydrogen. The satellites would lose their gaseous or volatile envelopes. Their rocky cores would resist melting and survive. Both the planets and the satellites would be unsuited to support human life.
good luck

Answer 3

Any planet orbiting far enough out when the star expanded will continue to orbit the star..

Answer 4

Of course, any planet far enough out to not get sucked in. For instance, when our sun goes red giant, it will take a while for the earth to be within it's "atmosphere" and outer planets will never be within it. So they will continue to orbit.

Answer 5

absolutely. if the planet is far enough from it.