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 10 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.

Total number of IAU Individual and Junior members: 14106 (of which 719 Junior members). Number of Active Individual and Junior Members in the IAU Directory: 11606.


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Name Location NCA adherence▼
Straatman, Caroline M. S. (Junior Member) Belgium Belgium
Sodré, Laerte Brazil Brazil
Sobreira, Paulo Henrique Azevedo Brazil Brazil
Spinelli, Patrícia Figueiró Brazil Brazil
Storchi-Bergmann, Thaisa Brazil Brazil
Saraiva, Maria de Fatima Oliveira Brazil Brazil
Selhorst, Caius Lucius Brazil Brazil
Schuch, Nelson Jorge Brazil Brazil
Scalise Jr, Eugenio Brazil Brazil
Sfair, Rafael Brazil Brazil
Soares, Domingos Savio de Lima Brazil Brazil
Santos Jr., Joao F. C. Brazil Brazil
Sawant, Hanumant S. Brazil Brazil
Steiner, Joao E. Brazil Brazil
Santiago, Basilio Xavier Brazil Brazil
Slavcheva-Mihova, Lyuba Stoyanova Bulgaria Bulgaria
Stateva, Ivanka Kirtcheva Bulgaria Bulgaria
Semkov, Evgeni Hristov Bulgaria Bulgaria
Stoyanov, Kiril Atanasov Bulgaria Bulgaria
Stoev, Alexey D. Bulgaria Bulgaria
Strigachev, Anton Atanasov Bulgaria Bulgaria
Sills, Alison I. Canada Canada
Stagg, Christopher Canada Canada
Stairs, Ingrid H. Canada Canada
Shalchi, Andreas Canada Canada
Stil, Jeroen Maarten Canada Canada
Sigut, T. A. Aaron Canada Canada
Seyed-Mahmoud, Behnam Canada Canada
Sivakoff, Gregory Robert Canada Canada
Strubbe, Linda Elisabeth United States Canada
Sivanandam, Suresh Canada Canada
Schieven, Gerald H. Moriarty Canada Canada
Scott, Douglas Canada Canada
Scarfe, Colin David Canada Canada
Scott, William Canada Canada
Short, Christopher Ian Canada Canada
St-Louis, Nicole Canada Canada
Seaquist, Ernest R. Canada Canada
Smylie, Douglas E. Canada Canada
Sawicki, Marcin Canada Canada
Spekkens, Kristine Canada Canada
Sher, David Canada Canada
Sato, Takashi Canada Canada
Smith, Nigel J.T. Canada Canada
Schade, David J. Canada Canada
Sreenivasan, S. Ranga Canada Canada
Soriano, Bernardo M. Philippines Canada
Safi-Harb, Samar Canada Canada
Spencer, Locke Dean Canada Canada
Shelton, Ian Keith Canada Canada
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