USNC-IAU Committee


Alice K. B. Monet, AAS Secretary
Alice K. B. Monet
AAS Secretary

About the USNC: The US National Committee for the International Astronomical Union (USNC/IAU) represents the interests of the US astronomical community and safeguards the intellectual vigor of the Union. The USNC/IAU explores issues in:

  • Interdisciplinary Research and Resources;
  • Individual IAU Membership;
  • Access to Scientific Data and Information;
  • Diversity Among Astronomers; and
  • Young Researcher Participation in IAU.

Members: The USNC is composed of officers and five categories of other representatives all supported by staff of the National Research Council. The AAS elects three members to the USNC to represent the AAS (so-called Category I), up to three members to represent the AAS Board of Trustees (so-called Category II), and has representation in Category IV, which are ex-officio voting members. In addition the Secretary of the USNC is the Secretary of the AAS.

Term: Three years, terms end 30 September of year indicated

Chair: Chryssa Kouveliotou

Vice Chair: Martha P. Haynes

Past Chair: Ken Kellermann (2019)

Secretary: Alice K. B. Monet

NASEM Staff Officer: Kathie Bailey, Category V (Ex officio, non-voting)

Charge: Effects appropriate participation by the United States in International Astronomical Union through the National Academy of Sciences-National Research Council.

Committee Chairs

Committee Members

Stephen C. Unwin (He/Him/His)


Term: Jun 2021 – Jun 2023

Alice K. B. Monet

US Naval Obs. (retired); AAS Secretary

Term: Jun 2019 – Jun 2025

Sarah Gibson (She/Her/Hers)


Term: Sep 2021 – Sep 2024

Preethi Nair

University of Alabama, Tuscaloosa

Term: Sep 2022 – Sep 2025