Alessandra Aloisi

Deputy Head, Science Mission Office
Alessandra Aloisi

As the deputy mission head of the Science Mission Office,  Alessandra oversees the science career and infrastructure at the institute, including the library, conference attendance, visitor programs, and internal grants, as well as the career development of more than 150 research staff members and postdoctoral researchers. Before she began this role in 2017, she was the deputy division head of the operations and engineering division at the institute, co-managing a group of more than 250 technical personnel, engineers, astronomers, and scientists who oversee the ground system efforts, including the planning and scheduling, integration and testing, and data management of the observatories we support.

Alessandra joined the institute’s research staff in 2003, working first for the European Space Agency and transferring to a position with the Association of the Universities for Research in Astronomy (AURA) in 2009. She started at the institute as an instrument scientist for the Space Telescope Imaging Spectrograph and the Cosmic Origins Spectrograph on the Hubble Space Telescope, and became the lead for the team responsible for the calibration, operations, and user support of these spectrographs just before the Hubble Servicing Mission 4. She launched her career as a postdoctoral researcher at the institute before becoming a postdoctoral researcher and then an associate research scientist at Johns Hopkins University.

Throughout her career, Alessandra has planned, reduced, and interpreted data from an array of Hubble instruments. She was also an expert user of the Far-Ultraviolet Spectroscopic Explorer (FUSE). She has co-authored more than 200 articles. Dr. Aloisi also regularly presents at conferences, including the American Astronomical Society Meeting, the Astronomical Society of the Pacific Conference Series, the IAU Symposium, and the SPIE Conference. Her primary fields of technical expertise are in ultraviolet/optical spectroscopy and optical/near-infrared imaging with space-based telescopes, science with data archives, and optimization of science through technology leadership and management.


PhD in Astronomy, Bologna University
Laurea in Astronomy, Bologna University


Science/Research Interests:

  • Resolved stellar populations in star-forming galaxies
  • Discovery and characterization of stellar and substellar members in nearby star-forming regions
  • Derivation of the IMF in nearby clusters down to the low-mass cut-off
  • Detection and modelling of circumstellar disks around brown dwarfs
  • Spectroscopy of atmospheres of Y dwarfs
  • Calibration techniques for spectrographs
  • High spatial resolution UV/optical/NIR imaging and UV/optical spectroscopy


Research Topics: Star Formation, Histories, and Evolution; Interstellar Medium; Resolved Stellar Populations; Astrochemistry, Chemical Abundances



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ORCID ID: 0000-0003-4137-882X