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An 80 au cavity in the disk around HD 34282
(EDP Sciences, 2017)
Context. Large cavities in disks are important testing grounds for the mechanisms proposed to drive disk evolution and dispersion, such as dynamical clearing by planets and photoevaporation.
Aims. We aim to resolve the ...
A ring-like concentration of mm-sized particles in Sz 91
(Oxford Univ Press, 2016)
Models of planet formation and disc evolution predict a variety of observables in the dust structure of protoplanetary discs. Here, we present Atacama Large Millimeter/submillimeter Array (ALMA) Band-6 and Band-7 observations ...
Connecting the shadows: probing inner disk geometries using shadows in transitional disks
(EDP Sciences, 2017)
Aims. Shadows in transitional disks are generally interpreted as signs of a misaligned inner disk. This disk is usually beyond the reach of current day high contrast imaging facilities. However, the location and morphology ...
The inner environment of Z Canis Majoris: High-contrast imaging polarimetry with NaCo
(EDP SCIENCES, 2015)
Context. Z CMa is a binary composed of an embedded Herbig Be and an FU Ori class star separated by ∼100 au. Observational
evidence indicates a complex environment in which each star has a circumstellar disk and drives a ...
Rotationally modulated variations and the mean longitudinal magnetic field of the Herbig Ae star HD 101412
(Edp Sciences, 2011-01)
Context. Despite the importance of magnetic fields to a full understanding of the properties of accreting Herbig Ae/Be stars, these fields have scarcely been studied until now over the rotation cycle. One reason for the ...
A family portrait of disk inner rims around Herbig Ae/Be stars. Hunting for warps, rings, self shadowing, and misalignments in the inner astronomical units
(EDP Sciences, 2020)
Context. The innermost astronomical unit (au) in protoplanetary disks is a key region for stellar and planet formation, as exoplanet searches have shown a large occurrence of close-in planets that are located within the ...
The structure of disks around Herbig Ae/Be stars as traced by CO ro-vibrational emission
(EDP Sciences, 2015)
Aims. We study the emission and absorption of CO ro-vibrational lines in the spectra of intermediate mass pre-main-sequence stars
with the aim to determine both the spatial distribution of the CO gas and its physical ...
Spectroscopic signatures of magnetospheric accretion in Herbig Ae/Be stars: I. The case of HD 101412
(EDP Sciences, 2016-08)
Context. Models of magnetically-driven accretion and outflows reproduce many observational properties of T Tauri stars. This concept is not well established for the more massive Herbig Ae/Be stars. Aims. We intend to examine ...
Cavity and other radial substructures in the disk around HD 97048
(EDP Sciences, 2017)
Context. Gaps, cavities, and rings in circumstellar disks are signposts of disk evolution and planet-disk interactions. We follow the recent suggestion that Herbig Ae/Be disks with a flared disk harbor a cavity, and ...