Context. The IACOB and OWN surveys are two ambitious, complementary observational
projects which have made available a large multi-epoch spectroscopic database of optical …

Doppler spectroscopy is a powerful tool for discovering and characterizing exoplanets. For
decades, the standard approach to extracting radial velocities (RVs) has been to cross …

We report high-precision X-ray monitoring observations in the 0.4–10 keV band of the
luminous, long-period colliding wind binary Eta Carinae, up to and through its most recent X …

We report on Swift X-ray Telescope observations of Eta Carinae (η Car), an extremely
massive, long-period, highly eccentric binary obtained during the 2014.6 X-ray …

Infrared observations of the dusty, massive Homunculus Nebula around the luminous blue
variable η Carinae are crucial to characterize the mass-loss history and help constrain the …

We present new X-ray and UV observations of the Wolf–Rayet+ black hole (BH) binary
system NGC 300 X-1 with the Chandra X-ray Observatory and the Hubble Space Telescope …

The long-period, highly eccentric Wolf-Rayet star binary system WR 140 has exceptionally
well-determined orbital and stellar parameters. Bright, variable X-ray emission is generated …

The Na D absorption doublet in the spectrum of η Carinae is complex, with multiple
absorption features associated with the Great Eruption (1840s), the Lesser Eruption (1890s) …

Context. The mass loss from massive stars is not understood well. η Carinae is a unique
object for studying the massive stellar wind during the luminous blue variable phase. It is …

Context. Eta Carinae is a highly eccentric, massive binary system (semimajor axis~ 15.5 au)
with powerful stellar winds and a phase-dependent wind-wind collision (WWC) zone. The …