The Library
Morphology of the gas-rich debris disk around HD 121617 with SPHERE observations in polarized light
Tools
Perrot, Clement, Olofsson, Johan, Kral, Quentin, Thébault, Philippe, Montesinos, Matías, Kennedy, Grant M., Bayo, Amelia, Iglesias, Daniela, van Holstein, Rob and Pinte, Christophe (2023) Morphology of the gas-rich debris disk around HD 121617 with SPHERE observations in polarized light. Astronomy & Astrophysics, 673 . A39. doi:10.1051/0004-6361/202244694 ISSN 0004-6361.
|
PDF
aa44694-22.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1492Kb) | Preview |
|
PDF
2302.07057.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only - Requires a PDF viewer. Download (1722Kb) |
Official URL: https://doi.org/10.1051/0004-6361/202244694
Abstract
Context. Debris disks are the signposts of collisionally eroding planetesimal circumstellar belts, whose study can put important constraints on the structure of extrasolar planetary systems. The best constraints on the morphology of disks are often obtained from spatially resolved observations in scattered light. Here, we investigate the young (∼16 Myr) bright gas-rich debris disk around HD 121617. Aims. We use new scattered-light observations with VLT/SPHERE to characterize the morphology and the dust properties of this disk. From these properties we can then derive constraints on the physical and dynamical environment of this system, for which significant amounts of gas have been detected. Methods. The disk morphology is constrained by linear-polarimetric observations in the J band. Based on our modeling results and archival photometry, we also model the SED to put constraints on the total dust mass and the dust size distribution. We explore different scenarios that could explain these new constraints. Results. We present the first resolved image in scattered light of the debris disk HD 121617. We fit the morphology of the disk, finding a semi-major axis of 78.3 ± 0.2 au, an inclination of 43.1 ± 0.2 ◦ and a position angle of the major axis with respect to north, of 239.8 ± 0.3 ◦ , compatible with the previous continuum and CO detection with ALMA. Our analysis shows that the disk has a very sharp inner edge, possibly sculpted by a yet-undetected planet or gas drag. While less sharp, its outer edge is steeper than expected for unperturbed disks, which could also be due to a planet or gas drag, but future observations probing the system farther from the main belt would help explore this further. The SED analysis leads to a dust mass of 0.21 ± 0.02 M⊕ and a minimum grain size of 0.87 ± 0.12 µm, smaller than the blowout size by radiation pressure, which is not unexpected for very bright collisionally active disks.
Item Type: | Journal Article | |||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QB Astronomy | |||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Astrophysical spectropolarimetry, Infrared astronomy, Space debris, Protoplanetary disks, Circumstellar matter | |||||||||||||||||||||
Journal or Publication Title: | Astronomy & Astrophysics | |||||||||||||||||||||
Publisher: | EDP Sciences | |||||||||||||||||||||
ISSN: | 0004-6361 | |||||||||||||||||||||
Official Date: | 1 May 2023 | |||||||||||||||||||||
Dates: |
|
|||||||||||||||||||||
Volume: | 673 | |||||||||||||||||||||
Article Number: | A39 | |||||||||||||||||||||
DOI: | 10.1051/0004-6361/202244694 | |||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||
Date of first compliant deposit: | 20 February 2023 | |||||||||||||||||||||
Date of first compliant Open Access: | 28 July 2023 | |||||||||||||||||||||
RIOXX Funder/Project Grant: |
|
|||||||||||||||||||||
Related URLs: | ||||||||||||||||||||||
Open Access Version: |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year