Individual and Junior Members

Professional scientists whose research is directly relevant to some branch of astronomy are eligible to apply as Individual Members. Individual Members are, normally, admitted by the Executive Committee on the proposal of a National Member.

Junior scientists who have completed their PhD studies between 2015 and 2020 and who are in the initial phase of the career of a professional researcher in some branch of astronomy or a related field may be admitted to the Union by the Executive Committee as Junior Members, for a period not exceeding 6 years.

Individual and Junior Members listed in the IAU Directory have a valid, public email, and are affiliated to at least one Division. They are labeled as "Active Members". For corrections and updates, please contact Any members remaining Inactive for more than 3 years will be removed from the IAU lists.

Additionally, while only Active Members are listed in the IAU Directory, you may still search for Active, Inactive or Deceased Members in the search field to your right.

For gender statistics click here.

Total number of IAU Individual and Junior members: 12744 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12379.


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Name▼ Location NCA adherence
Bučar Bricman, Katja (Junior Member) Slovenia, the Republic of Slovenia, the Republic of
Bucciarelli, Beatrice Italy Italy
Buccino, Andrea Paola Argentina Argentina
Buchhave, Lars A. Denmark Denmark
Buchlin, Eric France France
Bucik, Radoslav United States Germany
Buckley, David A.H. South Africa South Africa
Budaj, Jan Slovakia Slovakia
Buddelmeijer, Hugo (Junior Member) Netherlands Netherlands
Budding, Edwin New Zealand New Zealand
Buechner, Joerg Germany Germany
Bueno de Camargo, Julio Ignacio Brazil Brazil
Bues, Irmela D. Germany Germany
Buie, Marc W. United States United States
Buitink, Stijn Belgium Belgium
Buitrago, Fernando Portugal Portugal
Bujarrabal, Valentin Spain Spain
Bulbul, Esra Germany United States
Buldgen, Gaël (Junior Member) Switzerland Switzerland
Bulik, Tomasz Poland Poland
Bunce, Emma J United Kingdom United Kingdom
Bunker, Andrew J. United Kingdom United Kingdom
Buonanno, Roberto Italy Italy
Buote, David A. United States United States
Buragohain, Mridusmita (Junior Member) India India
Buratti, Bonnie J. United States United States
Burba, George A. Russian Federation Russian Federation
Burdanov, Artem (Junior Member) United States United States
Burderi, Luciano Italy Italy
Burdyuzha, Vladimir Vladimir Russian Federation Russian Federation
Bureau, Martin G. United Kingdom United Kingdom
Burenin, Rodion A. Russian Federation Russian Federation
Burenkov, Alexander Nikolaevich Russian Federation Russian Federation
Burgarella, Denis France France
Burgasser, Adam J. United States United States
Burgazli, Alvina Yu. (Junior Member) Ukraine Ukraine
Burger, Marijke Belgium Belgium
Burikham, Piyabut Thailand Thailand
Burkert, Andreas Michael Germany Germany
Burkhead, Martin S. United States United States
Burlaga, Leonard F. United States United States
Burman, Ronald Rion Australia Australia
Burningham, Ben United Kingdom United Kingdom
Burns, Jack O'Neal United States United States
Burns, Joseph A. United States United States
Burns, Ross Alexander (Junior Member) Japan Netherlands
Burrows, Adam Seth United States United States
Burrows, David Nelson United States United States
Burs, Lucian Romania Romania
Bursa, Michal Czech Republic Czech Republic
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