The hierarchical triple-body approximation has useful applications to a variety of systems
from planetary and stellar scales to supermassive black holes. In this approximation, the …

The secular approximation for the evolution of hierarchical triple configurations has proven
to be very useful in many astrophysical contexts, from planetary to triple-star systems. In this …

Astrophysicists are increasingly taking into account the effects of orbiting companions on
stellar evolution. New discoveries have underlined the role of binary star interactions in a …

We present a study of the spectroscopic binary TYC 2990-127-1 from the LAMOST survey.
We use full-spectrum fitting to derive radial velocities and spectral parameters. The high …

We present interferometric observations of the σ Orionis triple system using the CHARA
Array, NPOI, and VLTI. Using these measurements, we spatially resolve the orbit of the close …

Aims. We aim to measure very precise and accurate model-independent masses and
distances of detached binary stars. Precise masses at the< 1% level are necessary to test …

HD 181068 is the brighter of the two known triply eclipsing hierarchical triple stars in the
Kepler field. It has been continuously observed for more than 2 yr with the Kepler space …

Context. The precise determinations of stellar mass at≲ 1% provide important constraints on
stellar evolution models. Accurate parallax measurements can also serve as independent …

Context. Independent distance estimates are particularly useful to check the precision of
other distance indicators, while accurate and precise masses are necessary to constrain …

Binaries have received much attention as possible progenitors of type Ia supernova
explosions, but long-term gravitational effects, in tight triple or quadruple systems could also …