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Title: Exploring Dust around HD 142527 down to 0.″025 (4 au) Using SPHERE/ZIMPOL

Abstract

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 (∼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 ∼0.″025 (∼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 ∼30 and ∼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.

Authors:
; ; ; ;  [1]; ;  [2]; ;  [3];  [4];  [5]; ; ;  [6];  [7];  [8];  [9];  [10]; ;  [11] more »; « less
  1. ETH Zurich, Institute for Astronomy, Wolfgang-Pauli-Str. 27, CH-8093, Zurich (Switzerland)
  2. Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam (Netherlands)
  3. Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands)
  4. Universidad Autonónoma de Madrid, Dpto. Física Teórica, Módulo 15, Facultad de Ciencias, Campus de Cantoblanco, E-28049 Madrid (Spain)
  5. Millennium Nucleus “Protoplanetary Disk”, Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago (Chile)
  6. Univ. Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble (France)
  7. Max-Planck-Institut fur Astronomie, Königstuhl 17, D-69117 Heidelberg (Germany)
  8. Department of Astronomy, University of Michigan, 1085 S. University, Ann Arbor, MI 48109 (United States)
  9. INAF Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova (Italy)
  10. Université Grenoble Alpes, IPAG, F-38000 Grenoble (France)
  11. Aix Marseille Université, CNRS, LAM (Laboratoire d’Astrophysique de Marseille) UMR 7326, F-13388, Marseille (France)
Publication Date:
OSTI Identifier:
22663435
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (Online); Journal Volume: 154; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPARATIVE EVALUATIONS; COSMIC DUST; HERBIG-HARO OBJECTS; NOISE; POLARIMETRY; POLARIZATION; POTENTIALS; PROTOPLANETS; RESOLUTION; SCATTERING; SIGNAL-TO-NOISE RATIO; SPHERES; STAR EVOLUTION; STARS

Citation Formats

Avenhaus, H., Quanz, S. P., Schmid, H. M., Szulágyi, J., Bazzon, A., Dominik, C., Stolker, T., Ginski, C., De Boer, J., Garufi, A., Zurlo, A., Hagelberg, J., Benisty, M., Ménard, F., Henning, T., Meyer, M. R., Baruffolo, A., Beuzit, J. L., Costille, A., Dohlen, K., E-mail: havenhaus@gmail.com, and and others. Exploring Dust around HD 142527 down to 0.″025 (4 au) Using SPHERE/ZIMPOL. United States: N. p., 2017. Web. doi:10.3847/1538-3881/AA7560.
Avenhaus, H., Quanz, S. P., Schmid, H. M., Szulágyi, J., Bazzon, A., Dominik, C., Stolker, T., Ginski, C., De Boer, J., Garufi, A., Zurlo, A., Hagelberg, J., Benisty, M., Ménard, F., Henning, T., Meyer, M. R., Baruffolo, A., Beuzit, J. L., Costille, A., Dohlen, K., E-mail: havenhaus@gmail.com, & and others. Exploring Dust around HD 142527 down to 0.″025 (4 au) Using SPHERE/ZIMPOL. United States. doi:10.3847/1538-3881/AA7560.
Avenhaus, H., Quanz, S. P., Schmid, H. M., Szulágyi, J., Bazzon, A., Dominik, C., Stolker, T., Ginski, C., De Boer, J., Garufi, A., Zurlo, A., Hagelberg, J., Benisty, M., Ménard, F., Henning, T., Meyer, M. R., Baruffolo, A., Beuzit, J. L., Costille, A., Dohlen, K., E-mail: havenhaus@gmail.com, and and others. Sat . "Exploring Dust around HD 142527 down to 0.″025 (4 au) Using SPHERE/ZIMPOL". United States. doi:10.3847/1538-3881/AA7560.
@article{osti_22663435,
title = {Exploring Dust around HD 142527 down to 0.″025 (4 au) Using SPHERE/ZIMPOL},
author = {Avenhaus, H. and Quanz, S. P. and Schmid, H. M. and Szulágyi, J. and Bazzon, A. and Dominik, C. and Stolker, T. and Ginski, C. and De Boer, J. and Garufi, A. and Zurlo, A. and Hagelberg, J. and Benisty, M. and Ménard, F. and Henning, T. and Meyer, M. R. and Baruffolo, A. and Beuzit, J. L. and Costille, A. and Dohlen, K., E-mail: havenhaus@gmail.com and and others},
abstractNote = {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 (∼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 ∼0.″025 (∼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 ∼30 and ∼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.},
doi = {10.3847/1538-3881/AA7560},
journal = {Astronomical Journal (Online)},
number = 1,
volume = 154,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}