SOC:

 
• Andrej Prša (chair, USA)
• Merieme Chadid (France)
• Jacco van Loon (United Kingdom)
• Pascal Petit (France)
• Steven Shore (Italy)
• Chris Sneden (USA)
• David Soderblom (USA)
• Sumner Starrfield (USA)
• Robert Szabo (Hungary)

Scientific rationale:

Stellar astrophysics has seen major advancements in the last triennium, mostly thanks to the large surveys that observe large swaths of the sky and deliver aggregate petabytes of data. With the delivery of heterogeneous, high-precision data and advances in data science and computing power, we have been witnessing a substantial increase in model fidelity across stellar astrophysics: from stellar formation and evolution across the H-R diagram, to binary and multiple star physics and asteroseismology, all the way to galactic structure and evolution. Division G days provide us with an opportunity to reflect on what we have learned over the last triennium and ponder on the most pressing current challenges in the field of stellar astrophysics. The program is intentionally centered on discussions. Based on the highlighted successes of the last triennium, we focus on three major topics: star formation, non-linear asteroseismic models, and sophisticated atmosphere and accretion models in stellar and planetary systems. We pay special attention to the successes and challenges of stellar astrophysics in Asian countries. We round up Division days by tackling open questions with panel discussions and through active audience participation.

Topics:

• Highlights from the Division G-supported symposia in the last triennium
• Star formation – initial conditions and subsequent evolution
• Non-linear models of pulsating stars
• Realistic atmosphere and accretion models in single, binary and multiple stars and exoplanets
• Stellar astrophysics in Asia

SOC:

• What is the role of magnetic dynamos in protostars and young stars?
• What are the effects of stellar activity on debris disks and protoplanetary evolution?
• How well do we understand dust formation and evolution in atmospheres and outflows?
• How do we effectively classify variable stars in the era of large surveys?
• What is missing in space astronomy?