Professor Hartmann is an expert in star formation and protoplanetary disk evolution. He is a past vice-president of the American Astronomical Society, a fellow of the American Association for the Advancement of Science, and a fellow of the AAS.

Prof. Hartmann was elected to the National Academy of Sciences in 2024.

He is currently Leo Goldberg Collegiate Emeritus Professor of Astronomy.

Research Interests

Formation of stars; molecular cloud structure; protostellar accretion; evolution of protoplanetary disks; planet formation.