| Title: |
The asymmetric inner disk of the Herbig Ae star HD 163296 in the eyes of VLTI/MATISSE: evidence for a vortex? |
| Authors: |
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.; Cruzalèbes, P.; Glindemann, A.; Meisenheimer, K.; Paladini, C.; Schöller, M.; Woillez, J.; Venema, L.; Kokoulina, E.; Yoffe, G.; Ábrahám, P.; Abadie, S.; Abuter, R.; Accardo, M.; Adler, T.; Agócs, T.; Antonelli, P.; Böhm, 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. Gámez; Gabasch, A.; Gallenne, A.; Garces, E.; Girard, P.; Gonté, F. Y. J.; Herrera, J. C. González; Graser, U.; Guajardo, P.; Guitton, F.; Haubois, X.; Hron, J.; Hubin, N.; Huerta, R.; Isbell, J. W.; Ives, D.; Jakob, G.; Jaskó, A.; Jochum, L.; Klein, R.; Kragt, J.; Kroes, G.; Kuindersma, S.; Labadie, L.; Laun, W.; Poole, R. Le; Leinert, C.; Lizon, J. -L.; Lopez, M.; Mérand, 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.; Wrhel, F. |
| Source: |
A&A 647, A56 (2021) |
| Publication Year: |
2020 |
| Collection: |
Astrophysics |
| Subject Terms: |
Astrophysics - Solar and Stellar Astrophysics; Astrophysics - Earth and Planetary Astrophysics |
| Description: |
Context. The inner few au region of planet-forming disks is a complex environment. High angular resolution observations have a key role in understanding 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 VLTI/MATISSE observations. Methods. We use geometric models to fit the data. Our models include a smoothed ring, a flat disk with inner cavity, and a 2D Gaussian. The models can account for disk inclination and for azimuthal asymmetries as well. We also perform numerical hydro-dynamical 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 $3.5 \pm 0.2$. Comparing our result on the location of the asymmetry with other interferometric measurements, we confirm that the morphology of the $r |
| Document Type: |
Working Paper |
| DOI: |
10.1051/0004-6361/202039400 |
| Access URL: |
http://arxiv.org/abs/2012.05697 |
| Accession Number: |
edsarx.2012.05697 |
| Database: |
arXiv |