Paul Goudfrooij headshot

Dr. Paul Goudfrooij is an AURA Observatory Scientist.  His current position at STScI is Deputy Branch Lead of the JWST/NIRISS team (part of the Instruments Division), in which he also leads the efforts in the areas of Operations and the Astronomer's Proposal Tool.  From 2014 - 2019, he also served as Lead of the JWST Cross-Instrument Operations Working Group, where he coordinated the efforts to implement parallel observations for JWST.  After earning his Ph. D. at the University of Amsterdam in the Netherlands in 1994 and a postdoctoral fellowship at the European Southern Observatory near Munich, Germany, Dr. Goudfrooij joined the institute in 1996 as an Instrument Scientist. Prior to his work for the NIRISS instrument on JWST, his positions at STScI included Team Lead for the STIS instrument aboard HST (2001-2007) and IT Project Scientist (2007-2010).  Dr. Goudfrooij's research mainly focuses on stellar populations and dynamical evolution of globular star clusters and early-type galaxies.  His recent scientific interests include the nature of extended main sequence turnoffs in massive intermediate-age star clusters in the Magellanic Clouds, multiple stellar populations in globular clusters, and the assembly history and chemical evolution of early-type galaxies.


PhD in Astronomy, University of Amsterdam, The Netherlands
MS in Astronomy, Leiden University, The Netherlands


Science Interests:

  • Formation and  evolution of globular clusters
  • Nature of multiple stellar populations in globular clusters
  • Extended main sequence turn-offs (eMSTOs) in intermediate-age star clusters
  • Globular clusters as tools to understand galaxy evolution
  • Stellar  populations in (early-type)  galaxies
  • Nature of interstellar matter in early-type galaxies


Research Topics: Star Formation, Histories, and Evolution; Local Group Galaxies; Galaxy Formation and Evolution; Stellar Populations; Star Clusters; Resolved Stellar Populations; Astrochemistry, Chemical Abundances


Professional Websites:

Professional Website


ORCID ID: 0000-0002-5728-1427


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