Buscar
Mostrando ítems 31-40 de 163
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 ...
Variability and dust filtration in the transition disk J160421.7-213028 observed in optical scattered light
(EDP Sciences, 2015)
Context. Protoplanetary disks around young stars are the birth-sites of planets. Spectral energy distributions and direct images of a subset of disks known as transition disks reveal dust-depleted inner cavities. Some of ...
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 ...
Investigating Cepheid l Carinae' s cycle-to-cycle variations via contemporaneous velocimetry and interferometry(star)
(Oxford University Press, 2016)
Baade-Wesselink-type (BW) techniques enable geometric distance measurements of Cepheid variable stars in the Galaxy and the Magellanic clouds. The leading uncertainties involved concern projection factors required to ...
Spectral and orbital characterisation of the directly imaged giant planet HIP 65426 b
(EDP Sciences, 2019)
HIP 65426 b is a recently discovered exoplanet imaged during the course of the SPHERE-SHINE survey. Here we present new L′ and M′ observations of the planet from the NACO instrument at the VLT from the NACO-ISPY survey, ...
A direct imaging survey of spitzer-detected debris disks: occurrence of giant planets in dusty systems
(IOP Publishing Ltd., 2017)
We describe a joint high-contrast imaging survey for planets at the Keck and Very Large Telescope of the last large sample of debris disks identified by the Spitzer Space Telescope. No new substellar companions were ...
Optical Imaging Polarimetry of the LkCa 15 protoplanetary Disk with Sphere Zimpol
(IOP Publishing, 2015)
We present the first optical (590-890 nm) imaging polarimetry observations of the pre-transitional protoplanetary disk around the young solar analog LkCa 15, addressing a number of open questions raised by previous studies. ...