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NU Ori: a hierarchical triple system with a strongly magnetic B-type star
M. Shultz, J. -B. Le Bouquin, Th. Rivinius +13
NU Ori is a massive spectroscopic and visual binary in the Orion Nebula Cluster, with 4 components: Aa, Ab, B, and C. The B0.5 primary (Aa) is one of the most massive B-type stars…
GRAVITY chromatic imaging of Eta Car's core
GRAVITY Collaboration, J. Sanchez-Bermudez, G. Weigelt +132
Eta Car is one of the most intriguing luminous blue variables in the Galaxy. Observations and models at different wavelengths suggest a central binary with a 5.54 yr period residin…
Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
GRAVITY Collaboration, R. Abuter, A. Amorim +95
The highly elliptical, 16-year-period orbit of the star S2 around the massive black hole candidate Sgr A* is a sensitive probe of the gravitational field in the Galactic centre. Ne…
Physical parameters and 0.2% parallax of the detached eclipsing binary V923 Scorpii
T. Pribulla, A. Mérand, P. Kervella +10
V923 Sco is a bright ( = 5.91), nearby ( = 15.460.40 mas) southern eclipsing binary. Because both components are slow rotators, the minimum masses of the components are…
Methods for multiple telescope beam imaging and guiding in the near infrared
N. Anugu, A. Amorim, P. Gordo +10
Atmospheric turbulence and precise measurement of the astrometric baseline vector between any two telescopes are two major challenges in implementing phase referenced interferometr…