Orbital and atmospheric characterization of the planet within the gap of the PDS 70 transition disk
- A. Muller, M. Keppler, A. Zurlo
- Physics, GeologyAstronomy & Astrophysics
- 29 June 2018
Context. The observation of planets in their formation stage is a crucial but very challenging step in understanding when, how, and where planets form. PDS 70 is a young pre-main sequence star…
SPHERE: the exoplanet imager for the Very Large Telescope
Observations of circumstellar environments that look for the direct signal of exoplanets and the scattered light from disks have significant instrumental implications. In the past 15 years, major…
Imaging the water snow-line during a protostellar outburst
- L. Cieza, S. Casassus, A. Zurlo
- Physics, GeologyNature
- 13 July 2016
The spectral behaviour across the snow-line confirms recent model predictions: dust fragmentation and the inhibition of grain growth at higher temperatures results in soaring grain number densities and optical depths, implying that highly dynamical water snow-lines must be considered when developing models of disk evolution and planet formation.
Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70
- M. Keppler, M. Benisty, L. Weber
- Physics, GeologyAstronomy & Astrophysics
- 29 June 2018
Context. Young circumstellar disks are the birthplaces of planets. Their study is of prime interest to understand the physical and chemical conditions under which planet formation takes place. Only…
Circumbinary, not transitional: on the spiral arms, cavity, shadows, fast radial flows, streamers, and horseshoe in the HD 142527 disc
- Daniel J. Price, N. Cuello, G. Lodato
- Physics, Geology
- 7 March 2018
We present 3D hydrodynamical models of the HD 142527 protoplanetary disc, a bright and well-studied disc that shows spirals and shadows in scattered light around a 100 au gas cavity, a large…
Three Radial Gaps in the Disk of TW Hydrae Imaged with SPHERE
- R. Boekel, T. Henning, A. Zurlo
- Physics, Geology
- 20 October 2016
We present scattered light images of the TW Hya disk performed with the Spectro-Polarimetric High-contrast Exoplanet REsearch instrument in Polarimetric Differential Imaging mode at 0.63, 0.79, 1.24,…
First light of the VLT planet finder SPHERE - III. New spectrophotometry and astrometry of the HR 8799 exoplanetary system
Context. The planetary system discovered around the young A-type HR 8799 provides a unique laboratory to: a) test planet formation theories; b) probe the diversity of system architectures at these…
The SPHERE view of the planet-forming disk around HD 100546
We thank Paola Pinilla and Sean Brittain for the fruitful scientific discussion, and the referee for a thorough review that helped improve the text. We are grateful to the ESO technical operators at…
High contrast polarimetry in the infrared with SPHERE on the VLT
- M. Langlois, K. Dohlen, F. Wildi
- Physics, GeologyAstronomical Telescopes and Instrumentation
- 8 July 2014
The instrument SPHERE (Spectro-Polarimetric High-contrast Exoplanet REsearch), recently installed on the VLT-UT3, aims to detected and characterize giant extra-solar planets and the circumstellar…
Discovery of a warm, dusty giant planet around HIP 65426
- G. Chauvin, S. Desidera, Z. Wahhaj
- Physics, Geology
- 5 July 2017
Aims. The SHINE program is a high-contrast near-infrared survey of 600 young, nearby stars aimed at searching for and characterizing new planetary systems using VLT/SPHERE’s unprecedented…
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