General Investigator Program

 Scientists will be able to submit proposals for funding to support science investigations with Roman.

Illustration of the TRAPPIST-1 system

Roman’s General Investigator Program is being designed to support astronomers to reveal scientific discoveries using Roman data. This includes detailed analysis of individual objects and populations, simulations of the universe, observations with other facilities to complement Roman data, and developing new theories that could be tested with Roman data. These investigations could include new observations if needed.

In an extended mission, the General Investigator Program would likely become the dominant part of the mission. The Hubble Space Telescope has demonstrated clearly that the combination of a powerful facility and peer-reviewed proposals has the greatest impact in advancing the extraordinarily broad field of astrophysics research. 
The General Investigator Program will follow in Hubble’s footsteps by providing broad support to many fields of astrophysics, no doubt with the same astonishing results of new, creative, field-changing science. Many potential General Investigator science programs, contributed to the mission’s 2013 Science Definition Team report by members of the broader astronomical community, are listed below.

Planetary Bodies

  • A Full Portrait of the Kuiper Belt, Including Size Distributions, Colors, and Bimodality
  • The Outer Solar System from Neptune to the Oort Cloud
  • Free-floating Planets in the Solar Neighborhood
  • Measuring Planet Masses with Transit Timing Variations
  • Exoplanet Spectroscopy
  • Additional Planet Finding Capabilities — Astrometry
  • Additional Planet Finding Capabilities — Transits

Stellar Astrophysics

  • Stellar and Substellar Populations in Galactic Star Forming Regions
  • Identifying the Coldest Brown Dwarfs
  • Stellar Fossils in the Milky Way
  • The Infrared Color-Magnitude Relation
  • Finding the Closest Young Stars
  • The Most Distant Star-Forming Regions in the Milky Way
  • Super-resolution Imaging of Low-mass Stars with Kernel-phase and Precision Wavefront Calibration with Eigen-phase
  • Detecting and Characterizing Neutron Stars, Black Holes with Astrometric Microlensing

Galactic Astrophysics and the Local Volume

  • Proper Motions and headeres of Disk and Bulge Stars
  • Quasars as a Reference Frame for Proper Motion Studies
  • The Detection of the Elusive Stellar Counterpart of the Magellanic Stream
  • Near-field Cosmology: Finding the Faintest Milky Way Satellites
  • The Mass of the Milky Way
  • Distinguishing Between Cold and Warm Dark Matter
  • Finding (or Losing) Those Missing Satellites
  • Mapping the Potential of the Milky Way with Tidal Debris
  • Dissecting Nearby Galaxies
  • Galaxy Evolution from Resolved Stellar Pops: Halo Age Distributions of the Local Volume
  • Substructure Around Galaxies Within 50 Mpc
  • Resolved Stellar Populations in Nearby Galaxies
  • Deep Surface Photometry of Galaxies and Galaxy Clusters

Extragalactic Astrophysics

  • Galaxy Structure and Morphology
  • Strong Lensing
  • Searching for Extreme Shock-dominated Galaxy Systems from z = 1 — 2
  • Mapping the Distribution of Matter in Galaxy Clusters
  • Merging Clusters of Galaxies
  • Group-Scale Lenses: Unexplored Territory
  • The Evolution of Massive Galaxies: The Formation and Morphologies of Red Sequence Galaxies
  • Finding and Weighing Distant, High Mass Clusters of Galaxies
  • Probing the Epoch of Reionization with Lyman-Alpha Emitters
  • Obscured Quasars
  • The Faint End of the Quasar Luminosity Function
  • Strongly Lensed Quasars
  • High-Redshift Quasars and Reionization
  • Characterizing the Sources Responsible for Reionization
  • Finding the First Cosmic Explosions
  • Resolved Stellar Population Studies in z ~ 2 Star Forming Galaxies


  • Synergy Between LSST and Roman Space Telescope
  • Synergies Between Euclid and Roman Space Telescope
  • The Shapes of Galaxy Haloes from Gravitational Flexion
  • Roman Space Telescope and IRSA: Synergy Between All-Sky IR Surveys
  • Near Infrared Counterparts of Elusive Binary Neutron Star Mergers