Division II of the IAU provides a forum for astronomers studying a wide range of phenomena related to the structure, radiation and activity of the Sun, and its...
Division II of the IAU provides a forum for astronomers and astrophysicists studying a wide range of phenomena related to the structure, radiation and activity...
The solar activity cycle entered a prolonged quiet phase that started in 2008 and ended in 2010. This minimum lasted for a year longer than expected and all...
Our Working Group (WG) studies massive, luminous stars, both individually and in resolved and unresolved populations, with historical focus on early-type (OB)...
Division VI / Commission 24 / Working Group Planetary Nebulae
The aims of this Working Group are:•To ensure that scientific symposia on planetary nebulae take place regularly, ideally every 5 years. These symposia would...
The question whether or not massive stars can form in isolation or only in star clusters is of great importance for the theory of (massive) star formation as...
I take a critical look at the way in which electronic publishing has changed the world of publishing beyond recognition over the past decade. While the e...
Do galactic bars drive the formation of inner/outer rings and spiral arms?
We study the pitch angles of spiral arms and the frequency and dimensions of inner and outer rings as a function of disk parameters and the amplitude of non...