Mass loss is a key process in the evolution of massive stars, and must be understood
quantitatively if it is to be successfully included in broader astrophysical applications such as …

While interference fringes contain both amplitude and phase information, most
interferometric results published to date focus solely on the amplitude data. This is because …

Abstract Michigan InfraRed Combiner-eXeter (MIRC-X) is a new highly sensitive six-
telescope interferometric imager installed at the CHARA Array that provides an angular …

Context. Optical long-baseline interferometry is moving a crucial step forward with the
advent of general-user scientific instruments that equip large aperture and hectometric …

Context. Two scenarios have been proposed to match the existing observational constraints
of the object HR 6819. The system could consist of a close inner B-type giant plus a black …

Stars form by accreting material from their surrounding disks. There is a consensus that
matter flowing through the disk is channelled onto the stellar surface by the stellar magnetic …

Context. Accretion and outflow processes are of fundamental importance for our
understanding of the formation of stars and planetary systems. To trace these processes …

Extensive spectral observations of η Carinae over the last cycle, and particularly around the
2003.5 low-excitation event, have been obtained. The variability of both narrow and broad …

With its unprecedented light-collecting area for night-sky observations, the Cherenkov
Telescope Array (CTA) holds great potential for also optical stellar astronomy, in particular …

We present two-dimensional (2D) radiative transfer modelling of the Eta Carinae binary
system accounting for the presence of a wind–wind collision (WWC) cavity carved in the …