IMAGING POLARIMETRY OF THE POTENTIALLY PLANET-FORMING CIRCUMSTELLAR DISK HD 142527: THE NACO VIEW

被引：0

作者：

Canovas, H. ^{[1
]}

Menard, F. ^{[1
]}

Hales, A. ^{[1
]}

Jordan, A. ^{[1
]}

Schreiber, M. R. ^{[1
]}

Casassus, S. ^{[1
]}

Gledhill, T. M. ^{[1
]}

Pinte, C. ^{[1
]}

机构：

[1] Univ Valparaiso, Inst Astron & Astrofis, Avda Gran Bretana 1111, Valparaiso, Chile

来源：

XIV LATIN AMERICAN REGIONAL IAU MEETING | 2014年 / 44卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

HD 142527 is a unique protoplanetary disk in terms of planet formation. Its high accretion rate combined with its huge inner gap and short age make of it an ideal candidate for harboring forming planets. ALMA cycle-0 observations revealed gap crossing gas streams and showed that the millimeter-sized dust particles are distributed in a horse-shoe shape. Here we present our recent H-and Ks band imaging polarimetry data of HD 142527 obtained with VLT/NaCo. By means of polarimetry, we remove most of the stellar light, directly imaging the disk's inner regions. Our observations allow us to constrain the dust properties (size and porosity) on the surface of the outer disk. We also detect two regions of the disk with low emission ("nulls") both in polarized and unpolarized light. Intriguingly, one of these nulls is azimuthally coincident with the maximum of the horse-shoe shape detected by ALMA.

引用

页码：4 / 4

页数：1

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