Splinter Meeting HotStars
Hot Stars and Binary Evolution
Time: Thursday September 21, 14:00-16:30
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
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.
Coffee Break & Poster Session (Foyer Physics)
|17:00 ||Poster advertisement Conny Glaser:|
|Stellar Laboratories: High-precision Atomic Physics with STIS|
|17:02 ||Poster advertisement Michael Knörzer:|
|The enigma of the missing flux in the hot, helium-rich white dwarf RE 0503-289|
|17:04 ||Poster advertisement Tomer Shenar:|
|The formation of the observed Wolf-Rayet stars in the Magellanic Clouds is not dominated by mass transfer in binaries|