Iris — William Barton

A small, disaffected group of artists, scientists, and software developers en route to Titan, the crew of "Deepstar was seeking escape, isolation, and refuge when Iris wandered into the solar system. Now curiosity and wonder are drawing the star travelers to the mysterious gas giant and its hospitable moons -- for here lies their long sought dream of a new home and future. But an alien space-going vessel -- unimaginably ancient yet astonishingly still operational -- has been left behind on the surface of one of Iris's oribiting satellites by a strange and unknown culture. And the extraordinary artifact is pointing the colonist toward an even more remarkable discovery awaiting them on Iris itself; something deadly, inconceivable....and alive.