Communications have been established. the ships crew appears too be trophy hunters on a galactic scale. they show off their wares of tiyanki meat, amoeba skins and crystiline jewelry, they say all these could be yours, for a price...

These pelts do look fine (+500 food +500 consumer goods -500 energy credits)
Sorry, not intrested (they stay in the system)
(xenophobe) we dont need your foul wares. (the Chimera leaves this system)
(megacorp) perhaps if you throw in a little extra. (gain 1 of their techs)
(xenophile) thats barbaric! (they turn hostile)

(note they should have Enigmatic Engineering too keep people from getting all their tech instantly when they are destroyed)