H4 – Inter-Division G-H-J Commission Stellar Clusters throughout Cosmic Space and Time


Commission H4’s remit includes observational, theoretical, and numerical studies of stellar clusters and associations across the full age and mass ranges, whether or not they are gravitationally bound. We encourage research addressing their stellar populations, kinematics and dynamics, their formation, evolution, destruction, and cluster population properties, as well as their environmental impact, both in the nearby Universe where individual stars can be easily resolved and at greater distances where clusters are seen as (possibly resolved) high-luminosity components associated with their host galaxies. Complementary focus is placed on understanding the relationship between clusters and galactic field-star populations. The Commission's main communication means is through the SCYON newsletter.


Commission Web Page

Commission Members (199)

Under Division

Division G Stars and Stellar Physics
Division H Interstellar Matter and Local Universe
Division J Galaxies and Cosmology

Richard de Grijs

Macquarie University
Department of Physics and Astronomy
Balaclava Road
North Ryde 2109
New South Wales (NSW)

Phone: +61 2 9850 8317
Email 1: richardde-grijsmqeduau
Email 2: grijsastro-expatinfo
Personal website: http://astro-expat.info
Organization website: http://www.mq.edu.au

NCA adherence: Australia

Last updated:
March 7, 2018

Amanda I. Karakas

Monash University
Monash Centre for Astrophysics, School of Physics & Astronomy
School of Physics & Astronomy, Monash University
Melbourne 3800
Victoria (VIC)

Phone: +61 399054446
Email: AmandaKarakasmonashedu

NCA adherence: Australia

Last updated:
February 27, 2018

Ernst Paunzen

Faculty of Sciences Masaryk University
Department of Theoretical Physics and Astrophysics
Kotlářská 2
611 37 Brno
Czech Republic

Phone: +420 54949 8600
Email: epaunzenphysicsmunicz
Personal website: http://webda.physics.muni.cz
Organization website: http://astro.physics.muni.cz/

NCA adherence: Czech Republic

Last updated:
December 6, 2017

Organizing Committee

Search Scientific Bodies


IAU General Assembly 2018

IAU XXX GA Vienna Logo

IAU 100 Years: Under One Sky

“IAU 100 
Years: Under One Sky


How to Become a Member

CAPjournal issue 23 now available

CAPjournal issue 23

IAU Office of Astronomy for Development

Office for Astronomy Development

IAU Strategic Plan 2020–2030

Strategic Plan

Astronomy for Development 
Strategic Plan 2010–2020

Strategic Plan

Symposia and Meetings


IAU Office for Astronomy Outreach

Office for Astronomy Outreach

International Year of the Periodic
Table of Chemical Elements

Latest e-Newsletter

IAU Office for Young Astronomers

Office for Young Astronomers

International School for Young Astronomers

International School for Young Astronomers

Astronomy Outreach Newsletters and Events

Outreach Newsletters

IAU e-Newsletter
Volume 2018 n° 6

Latest e-Newsletter

Subscribe to the e-Newsletter


UNESCO-IAU Portal to the Heritage of Astronomy