Bertrang, GH-M;
Avenhaus, H;
Casassus, S;
Montesinos, M;
Kirchschlager, F;
Perez, S;
Cieza, L;
(2018)
HD 169142 in the eyes of ZIMPOL/SPHERE.
Monthly Notices of the Royal Astronomical Society
, 474
(4)
pp. 5105-5113.
10.1093/mnras/stx3052.
Preview |
Text
stx3052.pdf - Published Version Download (3MB) | Preview |
Abstract
We present new data of the protoplanetary disc surrounding the Herbig Ae/Be star HD 169142 obtained in the very broad-band (VBB) with the Zurich imaging polarimeter (ZIMPOL), a subsystem of the Spectro-Polarimetric High-contrast Exoplanet REsearch instrument (SPHERE) at the Very Large Telescope (VLT). Our Polarimetric Differential Imaging (PDI) observations probe the disc as close as 0.03 arcsec (3.5 au) to the star and are able to trace the disc out to ∼1.08 arcsec (∼126 au). We find an inner hole, a bright ring bearing substructures around 0.18 arcsec (21 au), and an elliptically shaped gap stretching from 0.25 to 0.47 arcsec (29–55 au). Outside of 0.47 arcsec, the surface brightness drops off, discontinued only by a narrow annular brightness minimum at ∼0.63 to 0.74 arcsec (74–87 au). These observations confirm features found in less-well-resolved data as well as reveal yet undetected indications for planet-disc interactions, such as small-scale structures, star–disc offsets, and potentially moving shadows.
| Type: | Article |
|---|---|
| Title: | HD 169142 in the eyes of ZIMPOL/SPHERE |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stx3052 |
| Publisher version: | http://doi.org/10.1093/mnras/stx3052 |
| Language: | English |
| Additional information: | © 2017 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, hydrodynamics, polarization, radiative transfer, techniques: high angular resolution, planet-disc interactions, protoplanetary discs, WEAKLY MAGNETIZED DISKS, INSTABILITY, TURBULENCE, TRANSPORT, HD-169142, EVOLUTION, TAURI |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10044884 |
Archive Staff Only
 |
View Item |
