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The β Pictoris syst...
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Skaf, NourParis Observatory,National Astronomical Observatory of Japan,University College London
(författare)
The β Pictoris system : Setting constraints on the planet and the disk structures at mid-IR wavelengths with NEAR
- Artikel/kapitelEngelska2023
Förlag, utgivningsår, omfång ...
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2023-03-24
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EDP Sciences,2023
Nummerbeteckningar
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LIBRIS-ID:oai:lup.lub.lu.se:13def46e-596c-4c1d-be1f-596f043978b8
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https://lup.lub.lu.se/record/13def46e-596c-4c1d-be1f-596f043978b8URI
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https://doi.org/10.1051/0004-6361/202245143DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Ämneskategori:ref swepub-contenttype
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Context. β Pictoris is a young nearby system hosting a well-resolved edge-on debris disk, along with at least two exoplanets. It offers key opportunities for carrying out detailed studies of the evolution of young planetary systems and their shaping soon after the end of the planetary formation phase. Aims. We analyzed high-contrast coronagraphic images of this system, obtained in the mid-infrared, taking advantage of the NEAR experiment using the VLT/VISIR instrument, which provides access to adaptive optics, as well as phase coronagraphy. The goal of our analysis is to investigate both the detection of the planet β Pictoris b and of the disk features at mid-IR wavelengths. In addition, by combining several epochs of observation, we expect to constrain the position of the known clumps and improve our knowledge on the dynamics of the disk. Methods. We observed the β Pictoris system over two nights in December 2019 in the 10- 12.5 μm coronagraphic filter. To evaluate the planet b flux contribution, we extracted the photometry at the expected position of the planet and compared it to the flux published in the literature. In addition, we used previous data from T-ReCS and VISIR in the mid-IR, updating the star's distance, to study the evolution of the position of the southwest clump that was initially observed in the planetary disk back in 2003. Results. While we did not detect the planet b, we were able to put constraints on the presence of circumplanetary material, ruling out the equivalent of a Saturn-like planetary ring around the planet. The disk presents several noticeable structures, including the known southwest clump. Using a 16-yr baseline, sampled with five epochs of observations, we were able to examine the evolution of the clump. We found that the clump orbits in a Keplerian motion with a semi-major axis of 56.1-0.3+0.4 au. In addition to the known clump, the images clearly show the presence of a second clump on the northeast side of the disk as well as possibly fainter and closer structures that are yet to be confirmed. Furthermore, we found correlations between the CO clumps detected with ALMA and the northeastern and southwestern clumps in the mid-IR images. Conclusions. If the circumplanetary material were located at the Roche radius, the maximum amount of dust determined from the flux upper limit around β Pictoris b would correspond to the mass of an asteroid of 5 km in diameter. Finally, the Keplerian motion of the southwestern clump is possibly indicative of a yet-to-be detected planet or signals the presence of a vortex.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Boccaletti, AnthonyParis Observatory
(författare)
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Pantin, EricUniversity of Paris-Saclay
(författare)
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Thebault, PhilippeParis Observatory
(författare)
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Kral, QuentinParis Observatory
(författare)
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Danielski, CamillaCSIC Instituto de Astrofísica de Andalucía (IAA)
(författare)
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Galicher, RaphaelParis Observatory
(författare)
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Milli, Julien
(författare)
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Lagrange, Anne MarieParis Observatory
(författare)
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Baruteau, Clément
(författare)
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Kenworthy, MatthewLeiden University
(författare)
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Absil, OlivierUniversity of Liège
(författare)
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Langlois, MaudEcole Normale Superieure de Lyon
(författare)
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Olofsson, JohanMax Planck Institute for Astronomy
(författare)
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Chauvin, GaelLaboratoire Joseph-Louis Lagrange
(författare)
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Huelamo, NuriaCSIC Centro de Astrobiologia (INTA)
(författare)
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Delorme, PhilippeUniversity Grenoble Alpes
(författare)
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Charnay, BenjaminParis Observatory
(författare)
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Guyon, OlivierNational Institutes of Natural Sciences - AstroBiology Center,National Astronomical Observatory of Japan,University of Arizona
(författare)
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Bonnefoy, Michael
(författare)
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Cantalloube, FaustineLaboratoire d'Astrophysique de Marseille (LAM)
(författare)
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Hoeijmakers, H. JensLund University,Lunds universitet,Astrofysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Astrophysics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)je7310ho
(författare)
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Käufl, UlliEuropean Southern Observatory
(författare)
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Kasper, MarkusEuropean Southern Observatory
(författare)
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Maire, Anne Lise
(författare)
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Mâlin, MathildeParis Observatory
(författare)
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Siebenmorgen, RalfEuropean Southern Observatory
(författare)
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Snellen, IgnasLeiden University
(författare)
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Zins, GérardEuropean Southern Observatory
(författare)
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Paris ObservatoryNational Astronomical Observatory of Japan
(creator_code:org_t)
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Ingår i:Astronomy and Astrophysics: EDP Sciences6750004-63611432-0746
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Skaf, Nour
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Boccaletti, Anth ...
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Pantin, Eric
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Thebault, Philip ...
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Kral, Quentin
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Danielski, Camil ...
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visa fler...
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Galicher, Raphae ...
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Milli, Julien
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Lagrange, Anne M ...
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Baruteau, Clémen ...
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Kenworthy, Matth ...
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Absil, Olivier
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Langlois, Maud
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Olofsson, Johan
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Chauvin, Gael
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Huelamo, Nuria
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Delorme, Philipp ...
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Charnay, Benjami ...
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Guyon, Olivier
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Bonnefoy, Michae ...
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Cantalloube, Fau ...
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Hoeijmakers, H. ...
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Käufl, Ulli
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Kasper, Markus
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Maire, Anne Lise
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Mâlin, Mathilde
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Siebenmorgen, Ra ...
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Snellen, Ignas
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Zins, Gérard
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visa färre...
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