WFRF:(Grady M. M.)
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- Asensio-Torres, RubenStockholms universitet,Institutionen för astronomi (author)
Polarimetry and flux distribution in the debris disk around HD 32297
- Article/chapterEnglish2016
Publisher, publication year, extent ...
- 2016-09-26
- EDP Sciences,2016
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:su-136939
- https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-136939URI
- https://doi.org/10.1051/0004-6361/201628543DOI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- We present high-contrast angular differential imaging (ADI) observations of the debris disk around HD32297 in H-band, as well as the first polarimetric images for this system in polarized differential imaging (PDI) mode with Subaru/HICIAO. In ADI, we detect the nearly edge-on disk at > 5 sigma levels from similar to 0.45 '' to similar to 1.7 '' (50-192AU) from the star and recover the spine deviation from the midplane already found in previous works. We also find for the first time imaging and surface brightness (SB) indications for the presence of a gapped structure on both sides of the disk at distances of similar to 0.75 '' (NE side) and similar to 0.65 '' (SW side). Global forward-modelling work delivers a best-fit model disk and well-fitting parameter intervals that essentially match previous results, with high-forward scattering grains and a ring located at 110AU. However, this single ring model cannot account for the gapped structure seen in our SB profiles. We create simple double ring models and achieve a satisfactory fit with two rings located at 60 and 95AU, respectively, low-forward scattering grains and very sharp inner slopes. In polarized light we retrieve the disk extending from similar to 0.25-1.6 '', although the central region is quite noisy and high S/N are only found in the range similar to 0.75-1.2 ''. The disk is polarized in the azimuthal direction, as expected, and the departure from the midplane is also clearly observed. Evidence for a gapped scenario is not found in the PDI data. We obtain a linear polarization degree of the grains that increases from similar to 10% at 0.55 '' to similar to 25% at 1.6 ''. The maximum is found at scattering angles of similar to 90 degrees, either from the main components of the disk or from dust grains blown out to larger radii.
Subject headings and genre
- NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
- NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
- protoplanetary disks
- techniques: high angular resolution
- stars: individual: HD 32297
- Astronomy
- astronomi
Added entries (persons, corporate bodies, meetings, titles ...)
- Janson, MarkusStockholms universitet,Institutionen för astronomi(Swepub:su)mjanso (author)
- Hashimoto, J. (author)
- Thalmann, C. (author)
- Currie, T. (author)
- Buenzli, E. (author)
- Kudo, T. (author)
- Kuzuhara, M. (author)
- Kusakabe, N. (author)
- Abe, L. (author)
- Akiyama, E. (author)
- Brandner, W. (author)
- Brandt, T. D. (author)
- Carson, J. (author)
- Egner, S. (author)
- Feldt, M. (author)
- Goto, M. (author)
- Grady, C. (author)
- Guyon, O. (author)
- Hayano, Y. (author)
- Hayashi, M. (author)
- Hayashi, S. (author)
- Henning, T. (author)
- Hodapp, K. (author)
- Ishii, M. (author)
- Iye, M. (author)
- Kandori, R. (author)
- Knapp, G. (author)
- Kwon, J. (author)
- Matsuo, T. (author)
- McElwain, M. (author)
- Mayama, S. (author)
- Miyama, S. (author)
- Morino, J. (author)
- Moro-Martin, A. (author)
- Nishimura, T. (author)
- Pyo, T. (author)
- Serabyn, E. (author)
- Suenaga, T. (author)
- Suto, H. (author)
- Suzuki, R. (author)
- Takahashi, Y. (author)
- Takami, M. (author)
- Takato, N. (author)
- Terada, H. (author)
- Turner, E. (author)
- Watanabe, M. (author)
- Wisniewski, J. (author)
- Yamada, T. (author)
- Takami, H. (author)
- Usuda, T. (author)
- Tamura, M. (author)
- Stockholms universitetInstitutionen för astronomi (creator_code:org_t)
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- In:Astronomy and Astrophysics: EDP Sciences5930004-63611432-0746
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- Kudo, T.
- Kuzuhara, M.
- Kusakabe, N.
- Abe, L.
- Akiyama, E.
- Brandner, W.
- Brandt, T. D.
- Carson, J.
- Egner, S.
- Feldt, M.
- Goto, M.
- Grady, C.
- Guyon, O.
- Hayano, Y.
- Hayashi, M.
- Hayashi, S.
- Henning, T.
- Hodapp, K.
- Ishii, M.
- Iye, M.
- Kandori, R.
- Knapp, G.
- Kwon, J.
- Matsuo, T.
- McElwain, M.
- Mayama, S.
- Miyama, S.
- Morino, J.
- Moro-Martin, A.
- Nishimura, T.
- Pyo, T.
- Serabyn, E.
- Suenaga, T.
- Suto, H.
- Suzuki, R.
- Takahashi, Y.
- Takami, M.
- Takato, N.
- Terada, H.
- Turner, E.
- Watanabe, M.
- Wisniewski, J.
- Yamada, T.
- Takami, H.
- Usuda, T.
- Tamura, M.
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