IAU logo    IAU  Commission 29

Stellar Spectra

IAU Commission 29 deals with the field of stellar spectroscopy and touches on a variety of topics relating to all branches of Stellar Astrophysics. It is one of the largest IAU commissions and the only one devoted to spectroscopy. Spectroscopy is one of the crucial keys to opening nature's secrets by providing critical physical information that can be obtained in no other way.

The scope of Commission 29 is broad, from instrumentation, to analysis methods, to scientific results. Because of its history, C29 has predominantly dealt with optical spectroscopy, but in recent years the commission has included ultraviolet and infrared spectroscopists among its members and officers.


PRESIDENT: Katia Cunha
Observatorio Nacional
Rua Gal. Jose Cristino 77
São Cristóvão - Rio de Janeiro, RJ 20921-400

Phone +55 21 35049100
Fax +55 21 35049100
Email: kcunhaonbr  

: David R. Soderblom
Space Telescope Science Institute
3700 San Martin Dr
Baltimore MD 21218-2410
United States

Phone: +1 410 338 4543
Fax: +1 410 338 5090
Email: soderblomstsciedu


Wako Aoki (Japan)
Martin Asplund (Australia)
Kenneth Carpenter (USA)
Paul Crowther (UK)
Vanessa Hill (France)
Jorge Melendez (Brazil)
Nikolai Piskunov (Sweden)
Kimberly Venn (Canada)
David Yong (Australia)

Contact information can be found at the IAU membership Directory


Members of Commission 29

IAU Commission 29 (Stellar Spectra) is under IAU Division G (Stars and Stellar Physics)

IAU Commission 29 (Stellar Spectra) belongs to IAU Division G (Stars and Stellar Physics).
Division G is committed to fostering research on stars and stellar physics, as well as providing a forum for exchange of ideas and the distribution of key stellar data and model predictions to the research community on astrophysics. The activity of Division G is focused on the understanding of the properties of stars of all masses and evolutionary stages and the physical mechanisms that govern them. This covers a broad range of aspects, including the determination of stellar observable properties and their time variability with all possible observational techniques, the investigation of their atmospheric and internal constitution, the theoretical modeling of stellar formation, structure, and evolution, the techniques used to measure and classify stars such as spectroscopy, radial velocities and photometry, and the production of stellar predictions (e.g. stellar evolution tracks, lifetimes, chemical yields, star-planet interactions, etc) requested by the astronomical community at large. Division G is also concerned with stellar binarity and multiplicity, from close to wide systems.

Other commissions in Division G are:




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Updated July 04, 2013