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: 12754 (of which 1224 are Junior members). Number of Active Individual and Junior Members in the IAU Directory: 12383.


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Name▼ Location NCA adherence
Christensen, Lars Lindberg United States Germany
Christensen, Lise Bech Denmark Denmark
Christensen, Per R. Denmark Denmark
Christensen-Dalsgaard, Jørgen Denmark Denmark
Christiaens, Valentin (Junior Member) Belgium Belgium
Christian, Carol Ann United States United States
Christiansen, Jessie L United States United States
Christie, Grant W. New Zealand New Zealand
Christille, Jean Marc Italy Italy
Christlieb, Norbert Germany Germany
Christodoulou, Dimitris M. United States United States
Christopoulou, Panagiota-Eleftheria Greece Greece
Christou, Apostolos United Kingdom United Kingdom
Christy, James Walter United States United States
CHU, Yaoquan China, Nanjing China, Nanjing
CHU, You-Hua China, Taipei China, Taipei
Chubko, Larysa Sergiivna Ukraine Ukraine
Chugai, Nikolaj N. Russian Federation Russian Federation
Chukwude, Augustine Ejikeme Nigeria Nigeria
CHUN, Moo-Young Korea, Rep of Korea, Rep of
CHUN, Mun-suk Korea, Rep of Korea, Rep of
CHUN, Sun Y. China, Nanjing China, Nanjing
Chung, Eduardo Edgardo Panama Panama
Chung, Haeun (Junior Member) United States United States
CHUNG, Aeree Korea, Rep of Korea, Rep of
CHUNG, Chul Korea, Rep of Korea, Rep of
CHUNG, Hyun-Soo Korea, Rep of Korea, Rep of
CHUNG, Sun-Ju Korea, Rep of Korea, Rep of
Chupina, Natalia Victorovna Russian Federation Russian Federation
Churazov, Eugene M. Russian Federation Russian Federation
Church, Ross Peter Sweden Sweden
Churchwell, Edward B. United States United States
Chyży, Krzysztof Tadeusz Poland Poland
Ciardi, Benedetta Germany Germany
Ciardi, David R. United States United States
Ciardullo, Robin United States United States
Cichowolski, Silvina Argentina Argentina
Cicone, Claudia Norway Norway
Cidale, Lydia Sonia Argentina Argentina
Cid Fernandes , Roberto Jr. Brazil Brazil
Cieza, Lucas A Chile Chile
Cigan, Phil United States United States
Cignoni, Michele Italy Italy
Cikota, Aleksandar (Junior Member) Chile Croatia, the Republic of
Ciliegi, Paolo Italy Italy
Cimo', Giuseppe Netherlands Netherlands
Cincotta, Pablo M. Argentina Argentina
Cinelli, Marco (Junior Member) Italy Italy
Ciolfi, Riccardo Italy Italy
Cionco, Rodolfo Gustavo Argentina Argentina
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