Warm exo-titans as a test of planetary atmospheric diversity

What can exoplanets orbiting M-dwarf stars teach scientists about planetary formation and evolution? This is what a recent study posted to the arXiv preprint server and submitted to the American Astronomical Society journals hopes to address as a team of researchers investigated the possibility of exo-Titans, exoplanets with atmospheres comprised of nitrogen and methane like Saturn’s moon Titan, orbiting M-dwarf stars, which are smaller and cooler than our sun.