Takahiro Hiroi, Ph.D.

Senior Research Scientist
NASA RELAB Operator
Department of Earth, Environmental, and Planetary Sciences, Brown University, Providence, Rhode Island 02912, USA.
E-mail: takahiro_hiroi@brown.edu

College of Arts and Sci., Univ. of Tokyo (1979-1981)
Dept. of Pure and Applied Sci., Univ. of Tokyo (1981-1983) B.A.
Mineralogical Inst., Graduate School of Univ. of Tokyo (1983-1988) M.S., Ph.D.
Postdoctoral Fellow at Mineralogical Inst., Univ. of Tokyo (1988-1990)
Visiting Scholar at Dept. of Geological Sci., Brown Univ. (1990-1991)
NRC Resident Research Associate at NASA Johnson Space Center (1991-1994)
Sr. Research Analyst at Dept. of Geological Sci., Brown Univ. (1994-1997)
Sr. Research Associate at Dept. of Geological Sci., Brown Univ. (1997-2021)
Visiting Prof. at National Institute of Polar Research in Tokyo (Summer 2010)
Sr. Research Scientist at Dept. of Earth, Environ. & Planet. Sci., Brown Univ. (2021-)

Publications
Papers and reviews (refereed): 141

Professional Experiences
As listed below, I have been the principal investigator (PI) in three NASA and one JSPS research projects, a co-investigator in five other NASA projects, and mainly worked in three spacecraft missions as co-investigators.  In addition to my demonstrated skill in measurement and analysis of reflectance spectra as the RELAB operator, I have extensively studied lunar and asteroidal mineralogy in relation to their returned samples and meteorites, including their space weathering effects through both experiments and modeling.

Awards
NASA Cosmochemistry grant (CoI, PI: Carle M. Pieters) 1999-2006
Asteroid (4887) Takihiroi named in honor of my research in 2000
Observership at Subaru Telescope on 2002/2/22
NASA Cosmochemistry grant (PI) 2002-2003
NASA MFR grant (CoI, PI: Carle M. Pieters) 2004-2007
NASA DDA grant (PI) 2006-2009
JSPS Grants-in-Aid (PI) 2012-2017
NASA SSERVI grant (CoI, PI: Carle M. Pieters) 2014-2018
NASA Emerging Worlds grant (CoI, PI: Cyrena Goodrich) 2016-2017
NASA PDART grant (CoI, PI: Ralph E. Milliken) 2016-2021
NASA EW grant (PI) 2017-2022
NASA/USRA grant (CoI, PI: Cyrena Goodrich) 2019-2022
NASA OSIRIS-REx Sample Analysis grant (CoI, PI: Ralph E. Milliken) 2020-2024
NASA Planetary Science Enabling Facilities grant (CoI, PI: Ralph E. Milliken) 2022-

Participation in Spacecraft Missions
Co-Investigator of Lunar Imaging Spectrometers onboard Kaguya spacecraft 1995-2010
Co-Investigator of NIRS onboard Hayabusa spacecraft 1999-2013
Co-investigator of NIRS3 and ONC-T onboard Hayabusa2 spacecraft 2009-
Co-investigator of OSIRIS-REx Sample Analysis Team 2020-