HD 169142 in the eyes of ZIMPOL/SPHERE

被引：44

作者：

Bertrang, G. H. -M. ^{[1
,2
,3
]}

Avenhaus, H. ^{[1
,3
,4
]}

Casassus, S. ^{[1
,3
]}

Montesinos, M. ^{[1
,3
,5
]}

Kirchschlager, F. ^{[6
]}

Perez, S. ^{[1
,3
]}

Cieza, L. ^{[2
,3
]}

Wolf, S. ^{[7
]}

机构：

[1] Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile

[2] Univ Diego Portales, Fac Ingn, Av Ejercito 441, Santiago, Chile

[3] Univ Chile, Millennium Nucleus Protoplanetary Discs ALMA Earl, Casilla 36-D, Santiago, Chile

[4] ETH, Inst Particle Phys & Astrophys, Wolfgang PauliStr 27, CH-8093 Zurich, Switzerland

[5] Pontificia Univ Catolica Chile, Inst Astrofis, Fac Fis, Santiago 7820436, Chile

[6] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England

[7] Univ Kiel, Inst Theoret Phys & Astrophys, Leibnizstr 15, D-24118 Kiel, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2018年 / 474卷 / 04期

关键词：

hydrodynamics; polarization; radiative transfer; techniques: high angular resolution; planet-disc interactions; protoplanetary discs; DISKS; INSTABILITY; TURBULENCE; TRANSPORT;

D O I：

10.1093/mnras/stx3052

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 sub-system 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 similar to 1.08 arcsec (similar to 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 similar to 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.

引用

页码：5105 / 5113

页数：9

共 52 条

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