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: 12737 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12372.


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Name▼ Location NCA adherence
Treffers, Richard R. United States United States
Tregloan-Reed, Jeremy James (Junior Member) Chile Chile
Treister, Ezequiel Chile Chile
Tremaine, Scott Duncan United States United States
Tremblay, Chenoa Desiree' (Junior Member) United States United States
Tremblay, Grant R United States United States
Tremonti, Christy A United States United States
Tremou, Evangelia (Lilia) United States United States
Trenti, Michele Australia Australia
Tresse, Laurence France France
Treu, Tommaso United States United States
Treuthardt, Patrick United States United States
Trevese, Dario Italy Italy
Treviño Morales, Sandra Patricia (Junior Member) Sweden Sweden
Trevisan, Marina Brazil Brazil
Triana, Santiago Andres Belgium Belgium
Triani, Dian P (Junior Member) Australia Australia
Trigilio, Corrado Italy Italy
Trigo-Rodriguez, Josep M. Spain Spain
Trimble, Virginia United States United States
Trinchieri, Ginevra Italy Italy
Trinidad, Miguel Angel Mexico Mexico
Tripathi, Durgesh India India
Tripathy, Sunil Kumar India India
Tripathy, Sushanta C. United States United States
Tripicco, Michael J. United States United States
TRIPPE, Sascha Korea, Rep of Korea, Rep of
Tristram, Konrad R. W. Chile Chile
Tritschler, Alexandra United States United States
Tritton, Keith Peter United Kingdom United Kingdom
Troja, Eleonora United States United States
Troland, Thomas Hugh United States United States
Troncoso Iribarren, Paulina Alejandra Chile Chile
Trott, Cathryn Margaret Australia Australia
Trotta, Roberto United Kingdom United Kingdom
Truemper, Joachim Germany Germany
Trujillo, Chadwick United States United States
Trujillo Bueno, Javier Spain Spain
Trujillo Cabrera, Ignacio Spain Spain
Trullols, I. Farreny Enric Spain Spain
Trushkin, Sergey A. Russian Federation Russian Federation
Tsai, Chao-Wei United States United States
TSAI, An-Li Poland China, Taipei
Tsamparlis, Michael Greece Greece
Tsantaki, Maria Italy Italy
Tsap, Yuriy Russian Federation Russian Federation
TSENG, Wei-Ling China, Taipei China, Taipei
TSENG, Yao-Huan China, Taipei China, Taipei
Tsiganis, Kleomenis Greece Greece
Tsinganos, Kanaris Greece Greece
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