80 citations · 253 across the 6 of their papers we have counts for
7 papers
A census of OBe stars in nearby metal-poor dwarf galaxies reveals a high fraction of extreme rotators
A. Schootemeijer, D. J. Lennon, M. Garcia +3
The Early Universe, together with many nearby dwarf galaxies, is deficient in heavy elements. The evolution of massive stars in such environments is thought to be affected by rotat…
Stellar mergers as the origin of the blue main-sequence band in young star clusters
Chen Wang, Norbert Langer, Abel Schootemeijer +10
Recent high-quality Hubble Space Telescope (HST) photometry shows that the main sequences (MS) stars of young star clusters form two discrete components in the color-magnitude diag…
A stringent upper limit on Be star fractions produced by binary interaction
B. Hastings, N. Langer, C. Wang +2
Context. Binary evolution can result in fast-rotating stars, predicted to be observable as Be stars, through accretion of angular momentum during mass-transfer phases. Despite nume…
Internal circulation in tidally locked massive binary stars -- Consequences for double black hole formation
Ben Hastings, Norbert Langer, Gloria Koenigsberger
Steady-state circulation currents are predicted in tidally deformed binary stars, which are believed to be progenitors of double black-hole merger events. This work aims to quantit…
Effects of close binary evolution on the main-sequence morphology of young star clusters
Chen Wang, Norbert Langer, Abel Schootemeijer +4
Star clusters are the building blocks of galaxies. They are composed of stars of nearly equal age and chemical composition, allowing us to use them as chronometers and as testbeds…
The Single Star Path to Be Stars
Ben Hastings, Chen Wang, Norbert Langer
Be stars are rapidly rotating B main sequence stars, which show line emission due to an outflowing disc. By studying the evolution of rotating single star models, we can assess the…