Varga, J., Hogerheijde, M., van Boekel, R., Klarmann, L., Petrov, R., Waters, L. B. F. M., Lagarde, S., Pantin, E., Berio, Ph, Weigelt, G., Robbe-Dubois, S., Lopez, B., Millour, F., Augereau, J-C, Meheut, H., Meilland, A., Henning, Th, Jaffe, W., Bettonvil, F., Bristow, P., Hofmann, K-H, Matter, A., Zins, G., Wolf, S., Allouche, F., Donnan, F., Schertl, D., Dominik, C., Heininger, M., Lehmitz, M., Cruzalebes, P., Glindemann, A., Meisenheimer, K., Paladini, C., Schoeller, M., Woillez, J., Venema, L., Kokoulina, E., Yoffe, G., Abraham, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Agocs, T., Antonelli, P., Bohm, A., Bailet, C., Bazin, G., Beckmann, U., Beltran, J., Boland, W., Bourget, P., Brast, R., Bresson, Y., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J-M, Connot, C., Conzelmann, R. D., Danchi, W-C, De Haan, M., Delbo, M., Ebert, M., Elswijk, E., Fantei, Y., Frahm, R., Rosas, V. Gamez, Gabasch, A., Gallenne, A., Garces, E., Girard, P., Gonte, F. Y. J., Herrera, J. C. Gonzalez, Graser, U., Guajardo, P., Guitton, F., Haubois, X., Hron, J., Hubin, N., Huerta, R., Isbell, J. W., Ives, D., Jakob, G., Jasko, A., Jochum, L., Klein, R., Kragt, J., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Le Poole, R., Leinert, C., Lizon, J-L, Lopez, M., Merand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Mohr, L., Morel, S., Mosoni, L., Navarro, R., Neumann, U., Nussbaum, E., Pallanca, L., Pasquini, L., Percheron, I, Pott, J-U, Pozna, E., Ridinger, A., Rigal, F., Riquelme, M., Rivinius, Th, Roelfsema, R., Rohloff, R-R, Rousseau, S., Schuhler, N., Schuil, M., Soulain, A., Stee, P., Stephan, C., ter Horst, R., Tromp, N., Vakili, F., van Duin, A., Vinther, J., Wittkowski, M. and Wrhel, F. (2021). The asymmetric inner disk of the Herbig Ae star HD 163296 in the eyes of VLTI/MATISSE: evidence for a vortex? Astron. Astrophys., 647. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

Context. A complex environment exists in the inner few astronomical units of planet-forming disks. High-angular-resolution observations play a key role in our understanding of the disk structure and the dynamical processes at work.Aims. In this study we aim to characterize the mid-infrared brightness distribution of the inner disk of the young intermediate-mass star HD 163296 from early VLTI/MATISSE observations taken in the L- and N-bands. We put special emphasis on the detection of potential disk asymmetries.Methods. We use simple geometric models to fit the interferometric visibilities and closure phases. Our models include a smoothed ring, a flat disk with an inner cavity, and a 2D Gaussian. The models can account for disk inclination and for azimuthal asymmetries as well. We also perform numerical hydrodynamical simulations of the inner edge of the disk.Results. Our modeling reveals a significant brightness asymmetry in the L-band disk emission. The brightness maximum of the asymmetry is located at the NW part of the disk image, nearly at the position angle of the semimajor axis. The surface brightness ratio in the azimuthal variation is 3.5 +/- 0.2. Comparing our result on the location of the asymmetry with other interferometric measurements, we confirm that the morphology of the r < 0.3 au disk region is time-variable. We propose that this asymmetric structure, located in or near the inner rim of the dusty disk, orbits the star. To find the physical origin of the asymmetry, we tested a hypothesis where a vortex is created by Rossby wave instability, and we find that a unique large-scale vortex may be compatible with our data. The half-light radius of the L-band-emitting region is 0.33 +/- 0.01 au, the inclination is 52 degrees(+5 degrees)(-7 degrees) 52 degrees-7 degrees+5 degrees , and the position angle is 143 degrees +/- 3 degrees. Our models predict that a non-negligible fraction of the L-band disk emission originates inside the dust sublimation radius for mu m-sized grains. Refractory grains or large (greater than or similar to 10 mu m-sized) grains could be the origin of this emission. N-band observations may also support a lack of small silicate grains in the innermost disk (r less than or similar to 0.6 au), in agreement with our findings from L-band data.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Varga, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hogerheijde, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Boekel, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klarmann, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petrov, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Waters, L. B. F. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lagarde, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pantin, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Berio, PhUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weigelt, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Robbe-Dubois, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lopez, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Millour, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Augereau, J-CUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meheut, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meilland, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Henning, ThUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jaffe, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bettonvil, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bristow, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hofmann, K-HUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Matter, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zins, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wolf, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Allouche, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Donnan, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schertl, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dominik, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heininger, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lehmitz, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cruzalebes, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Glindemann, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meisenheimer, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paladini, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schoeller, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Woillez, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Venema, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kokoulina, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yoffe, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abraham, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abadie, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abuter, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Accardo, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Adler, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Agocs, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Antonelli, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bohm, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bailet, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bazin, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beckmann, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beltran, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boland, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bourget, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brast, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bresson, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Burtscher, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Castillo, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chelli, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cid, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clausse, J-MUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Connot, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Conzelmann, R. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Danchi, W-CUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
De Haan, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delbo, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ebert, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Elswijk, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fantei, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Frahm, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rosas, V. GamezUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gabasch, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gallenne, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garces, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Girard, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gonte, F. Y. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Herrera, J. C. GonzalezUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Graser, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guajardo, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guitton, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Haubois, X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hron, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hubin, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huerta, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Isbell, J. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ives, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jakob, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jasko, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jochum, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klein, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kragt, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kroes, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kuindersma, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Labadie, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Laun, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Le Poole, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Leinert, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lizon, J-LUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lopez, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Merand, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marcotto, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mauclert, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maurer, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mehrgan, L. H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meisner, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meixner, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mellein, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mohr, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Morel, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mosoni, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Navarro, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Neumann, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nussbaum, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pallanca, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pasquini, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Percheron, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pott, J-UUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pozna, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ridinger, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rigal, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Riquelme, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rivinius, ThUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roelfsema, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rohloff, R-RUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rousseau, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schuhler, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schuil, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Soulain, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stee, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stephan, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
ter Horst, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tromp, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vakili, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Duin, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vinther, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wittkowski, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wrhel, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-606446
DOI: 10.1051/0004-6361/202039400
Journal or Publication Title: Astron. Astrophys.
Volume: 647
Date: 2021
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 1432-0746
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60644

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