Splinter Meeting HotStars

Hot Stars and Binary Evolution

Time: Thursday September 21, 14:00-16:30 and 17:00-19:00

Room: HS3

Organizers: Andreas Sander, Kerstin Weis, Veronika Schaffenroth

Hot stars dominate the galactic budget of ionizing photons and profoundly impact their environments. While typically associated with massive stars, e.g., OB-type stars, Wolf-Rayet stars, Red Supergiants, Luminous Blue Variables, even low-mass stars may develop high temperatures as they evolve beyond core-hydrogen burning to become Hot Subdwarfs, Central Stars of Planetary Nebula, and Hot White Dwarfs.

As if the physics of mass-loss by wind or erruptions, rotation, and magnetic fields weren't complicated enough - we are now forced to acknowledge the fact that the majority of stars are found in binary systems and a significant fraction of them will likely interact with companions during their lifetimes. Those interactions can be stable and steady mass transfer, but also rather short-lived and violent events like common envelope ejection or mergers. Also single stars can be the result of such interactions.

There is a multitude of evolutionary scenarios existing for binaries. But are they really successful in explaining our observations?

In this splinter, we want to discuss our current understanding of the evolution of hot stars in all phases of stellar evolution, focusing on the impact of binarity on their evolution.

Program

Related contributions *)

PresentationTitleType PDF
GlaserStellar Laboratories: High-precision Atomic Physics with STISPoster PDF
GrunerAn in-depth look into the earliest O-type Galactic binary, HD 93129ATalk PDF
HainichMassive binary stars with relativistic companions: Studying donor winds with the HSTTalk PDF
HoyerThe giant-dwarf connectionTalk PDF
KnörzerThe enigma of the missing flux in the hot, helium-rich white dwarf RE 0503-289Poster PDF
KupferThe population of ultracompact hot subdwarf binariesTalk PDF
LatourSpectral analysis of four very similar hot hydrogen-rich subdwarf O starsTalk PDF
LöblingSpectral Analysis of the hybrid PG 1159-type Central Stars of the Planetary Nebulae Abell 43 and NGC 7094Talk PDF
MackebrandtThe stellar pulsation timing method to detect substellar companionsTalk PDF
QuastMass transfer evolution in high mass X-ray binariesTalk PDF
SanderModeling hot star atmospheres: Challenges, applications, and the next generationTalk PDF
SchaffenrothNews from the EREBOS projectTalk PDF
SchuhThe O-C diagram of V391 Peg revisited: planet or not?Talk PDF
ShenarMagnetic stars as a laboratory for constraining the weak-wind problem in massive starsTalk PDF
ShenarThe formation of the observed Wolf-Rayet stars in the Magellanic Clouds is not dominated by mass transfer in binariesPoster PDF

*) submitted abstracts, acceptance pending.