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AMBER, the near-infrared spectro-interferometric three-telescope VLTI instrument
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 baseline facilities,Expand
Tracing the young massive high-eccentricity binary system Theta 1 Orionis C through periastron passage
Context. The nearby high-mass star binary system θ 1 Ori C is the brightest and most massive of the Trapezium OB stars at the core of the Orion Nebula Cluster, and it represents a perfect laboratoryExpand
A hot compact dust disk around a massive young stellar object
Near-infrared interferometric observations that spatially resolve the astronomical-unit-scale distribution of hot material around a high-mass (∼20 solar masses) young stellar object show an elongated structure with a size of ∼13 × 19 astronomical units, consistent with a disk seen at an inclination angle of ∼45°. Expand
Visual/infrared interferometry of Orion Trapezium stars: preliminary dynamical orbit and aperture synthesis imaging of the θ1 Orionis C system
Context. Located in the Orion Trapezium cluster, θ^1 Ori C is one of the youngest and nearest high-mass stars (O5-O7) known. Besides its unique properties as a magnetic rotator, the system is alsoExpand
Resolving Vega and the inclination controversy with CHARA/MIRC
Optical and infrared interferometers definitively established that the photometric standard Vega (={alpha} Lyrae) is a rapidly rotating star viewed nearly pole-on. Recent independent spectroscopicExpand
First Visual Orbit for the Prototypical Colliding-wind Binary WR 140
Wolf-Rayet (WR) stars represent one of the final stages of massive stellar evolution. Relatively little is known about this short-lived phase and we currently lack reliable mass, distance, andExpand
Polarized Disk Emission from Herbig Ae/Be Stars Observed Using Gemini Planet Imager: HD 144432, HD 150193, HD 163296, and HD 169142
Exeter’s STFC Consolidated Grant (ST/J001627/1). SK acknowledges support from an STFC Rutherford Fellowship (ST/J004030/1) and a European Research Council (ERC) Starting Grant (Grant agreement NoExpand
Orbits, Distance, and Stellar Masses of the Massive Triple Star Sigma Orionis
We present interferometric observations of the sigma Orionis triple system using the CHARA Array, NPOI, and VLTI. Using these measurements, we spatially resolve the orbit of the close spectroscopicExpand
Outflows from the high-mass protostars NGC 7538 IRS1/2 observed with bispectrum speckle interferometry Signatures of flow precession
Context. NGC 7538 IRS1 is a high-mass (30 M⊙) protostar with a CO outflow, an associated ultracompact H II region, and a linear methanol maser structure, which might trace a Keplerian-rotatingExpand
The origin of hydrogen line emission for five Herbig Ae/Be stars spatially resolved by VLTI/AMBER spectro-interferometry
Context. Accretion and outflow processes are of fundamental importance for our understanding of the formation of stars and planetary systems. To trace these processes, diagnostic spectral lines suchExpand