Direct detection of scattered light gaps in the transitional disk around HD97048 with VLT/SPHERE

被引：89

作者：

Ginski, C. ^{[1
]}

Stolker, T. ^{[2
]}

Pinilla, P. ^{[1
]}

Dominik, C. ^{[2
]}

Boccaletti, A. ^{[3
]}

de Boer, J. ^{[1
]}

Benisty, M. ^{[4
,5
]}

Biller, B. ^{[6
]}

Feldt, M. ^{[7
]}

Garufi, A. ^{[8
,9
]}

Keller, C. U. ^{[1
]}

Kenworthy, M. ^{[1
]}

Maire, A. L. ^{[7
]}

Menard, F. ^{[4
,5
]}

Mesa, D. ^{[10
]}

Milli, J. ^{[11
]}

Min, M. ^{[2
,12
]}

Pinte, C. ^{[4
,5
]}

Quanz, S. P. ^{[8
]}

van Boekel, R. ^{[7
]}

Bonnefoy, M. ^{[4
,5
]}

Chauvin, G. ^{[4
,5
]}

Desidera, S. ^{[10
]}

Gratton, R. ^{[10
]}

Girard, J. H. V. ^{[11
]}

Keppler, M. ^{[4
,5
]}

Kopytova, T. ^{[7
]}

Lagrange, A. -M. ^{[4
,5
]}

Langlois, M. ^{[13
,14
]}

Rouan, D.

Vigan, A. ^{[14
]}

机构：

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

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

[3] Univ Paris 06, Observ Paris Meudon, Univ Paris Diderot, CNRS,LESIA, 5 Pl Jules Janssen, F-92195 Meudon, France

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

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

[6] Univ Edinburgh, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland

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

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

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

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

[11] ESO, Alonso de Cordova 3107,Casilla 19001, Vitacura, Santiago De Chi, Chile

[12] SRON Netherlands Inst Space Res, Sorbonnelaan 2, NL-3584 CA Utrecht, Netherlands

[13] Univ Lyon 1, CNRS, CRAL, UMR 5574, 9 Ave Charles Andre, F-69561 St Genis Laval, France

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

来源：

ASTRONOMY & ASTROPHYSICS | 2016年 / 595卷

关键词：

stars: individual: HD97048; protoplanetary disks; planet-disk interactions; techniques: polarimetric; SPECTRAL ENERGY-DISTRIBUTIONS; NON-AXISYMMETRICAL STRUCTURES; CIRCUMSTELLAR DISK; PROTOPLANETARY DISKS; OPTICAL-PROPERTIES; PLANET FORMATION; DUST FILTRATION; OUTER REGIONS; T-TAURI; DISCOVERY;

D O I：

10.1051/0004-6361/201629265

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Aims. We studied the well-known circumstellar disk around the Herbig Ae/Be star HD97048 with high angular resolution to reveal undetected structures in the disk which may be indicative of disk evolutionary processes such as planet formation. Methods. We used the IRDIS near-IR subsystem of the extreme adaptive optics imager SPHERE at the ESO/VLT to study the scattered light from the circumstellar disk via high resolution polarimetry and angular differential imaging. Results. We imaged the disk in unprecedented detail and revealed four ring-like brightness enhancements and corresponding gaps in the scattered light from the disk surface with radii between 39 au and 341 au. We derived the inclination and position angle as well as the height of the scattering surface of the disk from our observational data. We found that the surface height profile can be described by a single power law up to a separation similar to 270 au. Using the surface height profile we measured the scattering phase function of the disk and found that it is consistent with theoretical models of compact dust aggregates. We discuss the origin of the detected features and find that low mass (<= 1 M-Jup) nascent planets are a possible explanation.

引用

页数：11

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