Activities in the various astronomical sub-disciplines are mostly coordinated through the IAU Divisions.

Following the adoption of the Executive Committee Resolution at the XXVIIIth General Assembly held in Beijing, a new Division scheme was put into place, to take into account the evolution of astronomy and to reflect the scientific policy of the IAU.

These Divisions all include one or more IAU Commissions, each focusing on a narrower scientific or organizational theme.

All Active IAU Members belong to at least one Division. In order to join a Division the member should contact the IAU Secretariat.

For information Divisions please see the Statutes, Bye-Laws and Working Rules pages.

A document with an overview of the duties of Division Presidents can be found here.

The list of Divisions adopted in Beijing is as follows:

Past Division Steering and Organizing Committees

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