Exploring Dust around HD 142527 down to 0.025 (4au) Using SPHERE/ZIMPOL

被引：67

作者：

Avenhaus, H. ^{[1
,2
,3
]}

Quanz, S. P. ^{[1
]}

Schmid, H. M. ^{[1
]}

Dominik, C. ^{[4
]}

Stolker, T. ^{[4
]}

Ginski, C. ^{[5
]}

de Boer, J. ^{[5
]}

Szulagyi, J. ^{[1
]}

Garufi, A. ^{[18
]}

Zurlo, A. ^{[3
,6
]}

Hagelberg, J. ^{[7
]}

Benisty, M. ^{[7
]}

Henning, T. ^{[8
]}

Menard, F. ^{[7
]}

Meyer, M. R. ^{[9
]}

Baruffolo, A. ^{[10
]}

Bazzon, A. ^{[1
]}

Beuzit, J. L. ^{[11
,12
]}

Costille, A. ^{[13
]}

Dohlen, K. ^{[13
]}

Girard, J. H. ^{[14
]}

Gisler, D. ^{[15
]}

Kasper, M. ^{[16
]}

Mouillet, D. ^{[11
,12
]}

Pragt, J. ^{[17
]}

Roelfsema, R. ^{[17
]}

Salasnich, B. ^{[10
]}

Sauvage, J. -F. ^{[13
]}

机构：

[1] Swiss Fed Inst Technol, Inst Astron, Wolfgang Pauli Str 27, CH-8093 Zurich, Switzerland

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

[3] Univ Chile, Dept Astron, Millennium Nucleus Protoplanetary Disk, Casilla 36-D, Santiago, Chile

[4] Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands

[5] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[6] Univ Diego Port, Fac Ingn, Nucleo Astron, Av Ejercito 441, Santiago, Chile

[7] Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France

[8] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[9] Univ Michigan, Dept Astron, 1085 S Univ, Ann Arbor, MI 48109 USA

[10] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[11] Univ Grenoble Alpes, IPAG, F-38000 Grenoble, France

[12] CNRS, IPAG, F-38000 Grenoble, France

[13] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France

[14] European Southern Observ, Alonso Cordova 3107,Casilla 19001, Santiago 19, Chile

[15] Kiepenheuer Inst Sonnenphys, Schoneckstr 6, D-79104 Freiburg, Germany

[16] European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany

[17] NOVA Opt Infrared Grp, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands

[18] Univ Autonoma Madrid, Dept Fis Teor, Fac Ciencias, Modulo 15,Campus Cantoblanco, E-28049 Madrid, Spain

来源：

ASTRONOMICAL JOURNAL | 2017年 / 154卷 / 01期

关键词：

polarization; protoplanetary disks; stars: formation; stars: individual (HD 142527); stars: pre-main sequence; HERBIG-AE/BE STARS; PROTOPLANETARY DISK; TRANSITION DISK; LKCA; 15; SPIRAL ARMS; PLANET; INNER; GAS; COMPANION; ASYMMETRY;

D O I：

10.3847/1538-3881/aa7560

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have observed the protoplanetary disk of the well-known young Herbig star HD 142527 using ZIMPOL polarimetric differential imaging with the very broad band (similar to 600-900 nm) filter. We obtained two data sets in 2015 May and 2016 March. Our data allow us to explore dust scattering around the star down to a radius of similar to 0 ''.025 (similar to 4 au). The well-known outer disk is clearly detected. at higher resolution than before. and shows previously unknown substructures, including spirals going inward. into the cavity. Close to the star, dust scattering is detected at high signal-to-noise ratio, but it is unclear whether the signal represents the inner disk, which has been linked to the two prominent local minima in the scattering of the outer disk that are. interpreted as shadows. An interpretation of an inclined inner disk combined with a dust halo is compatible with both our and previous observations, but other arrangements of the dust cannot be ruled out. Dust scattering is also present within the large gap between similar to 30 and similar to 140 au. The comparison of the two data sets suggests rapid evolution of the inner regions of the disk, potentially driven by the interaction with the close-in M-dwarf companion, around which no polarimetric signal is detected.

引用

页数：10

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