When the primary star in a close binary system evolves into a giant and engulfs its
companion, its core and the companion temporarily orbit each other inside a common …

Yearslong time series of high-precision brightness measurements have been assembled for
thousands of stars with telescopes operating in space. Such data have allowed astronomers …

We improve the current upper bound on the axion-photon coupling derived from stellar
evolution using the R 2 parameter, the ratio of stellar populations on the Asymptotic Giant …

We update the capabilities of the software instrument Modules for Experiments in Stellar
Astrophysics (MESA) and enhance its ease of use and availability. Our new approach to …

Black hole binary systems with companion stars are typically found via their x-ray emission,
generated by interaction and accretion. Noninteracting binaries are expected to be plentiful …

The understanding of stellar structure represents the crossroads of our theories of the
nuclear force and the gravitational interaction under the most extreme conditions observably …

Stellar-mass black holes are the final remnants of stars born with more than 15 solar
masses. Billions are expected to reside in the Local Group, yet only a few are known, mostly …

We present the initial–final mass relation (IFMR) based on the self-consistent analysis of
Sirius B and 79 white dwarfs from 13 star clusters. We have also acquired additional signal …

After a decade and a half of research motivated by the accelerating universe, theory and
experiment have reached a certain level of maturity. The development of theoretical models …

We update the capabilities of the open-knowledge software instrument Modules for
Experiments in Stellar Astrophysics (MESA). RSP is a new functionality in MESAstar that …