A pair of brown dwarfs found around a star, that they shouldn't bearound

Yousuf Khan wrote:

That in dwarfs (main sequence stars) the existence of planets is
positively correlated to metallicity, while (according to that paper)
the opposite holds in giants. Since all giants evolved from dwarfs,
and their planetary systems should have already been present, this is
paradoxical.

Are you talking about metallicity in general, or specifically about
lithium metallicity?

Maybe you need to read the paper again. My paper does not say anything
about lithium. It says exactly what I related above.

If it's lithium, then the other study seems to
conclude that planet formation requires lower lithium levels for all
stars. So maybe general metallicity has nothing to do with planet
formation, just only lithium metallicity?

No. The paper on lithium says that planet formation must somehow cause
conditions that destroy lithium inside the star. All stars are born
with essentially the same amount of lithium.

Andrew Usher