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
Topchieva, Anastasiia (Junior Member) Russian Federation Russian Federation
Torbaniuk, Olena O. (Junior Member) Ukraine Ukraine
Toribio Pérez, Maria Carmen Sweden Sweden
TORII, Kazufumi Japan Japan
TORIUMI, Shin Japan Japan
Torkelsson, Ulf J. Sweden Sweden
Tormen, Giuseppe Italy Italy
Tornambe, Amedeo Italy Italy
Tornikoski, Merja T. Finland Finland
Török, Gabriel Czech Republic Czech Republic
Torralba Elipe, Guillermo (Junior Member) Spain Spain
José Miguel Torrejón, Jose Miguel Spain Spain
Torrelles, Jose Maria Spain Spain
Torres, Andrea Fabiana Argentina Argentina
Torres, Diego F. Spain Spain
Torres, Guillermo United States United States
Torres, Jesus Rodrigo F. Philippines Philippines
Torres López, Rosa Martha Mexico Mexico
Torres-Papaqui, Juan Pablo Mexico Mexico
Torres-Peimbert, Silvia Mexico Mexico
Torteeka, Peerapong (Junior Member) Thailand Thailand
Tortora, Crescenzo Italy Italy
Torun, Mehmet Kemalettin (Junior Member) Turkey Turkey
TOSA, Makoto Japan Japan
TOSAKI, Tomoka Japan Japan
Tosi, Federico Italy Italy
Tosi, Monica Italy Italy
TOTANI , Tomonori Japan Japan
Toth, Imre Hungary Hungary
Toth, Juraj Slovakia Slovakia
Toth, Laszlo Viktor Hungary Hungary
Tothill, Nicholas F.H. Australia Australia
Touma, Jihad Rachid Lebanon Lebanon
Tout, Christopher Adam United Kingdom United Kingdom
Tovmassian, Gagik Mexico Mexico
Tovmassian, Hrant Mushegi United States United States
Townsend, Lee J South Africa South Africa
Townsend, Richard Henry United States United States
Tozzi, Gian Paolo Italy Italy
Tozzi, Paolo Italy Italy
Trafton, Laurence M. United States United States
Trager, Scott C. Netherlands Netherlands
Trakhtenbrot, Benny Israel Israel
Trammell, Susan R. United States United States
Tran, Kim-Vy Australia Australia
Tranberg, Anders Norway Norway
TRANI, Alessandro Alberto (Junior Member) Japan Japan
Traulsen, Iris Germany Germany
Traven, Gregor (Junior Member) Slovenia, the Republic of Sweden
Trebitsch, Maxime (Junior Member) Netherlands Netherlands
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