Testing the Interaction between a Substellar Companion and a Debris Disk in the HR 2562 System
Abstrak
The HR 2562 system is a rare case where a brown dwarf companion resides in a cleared inner hole of a debris disk, offering invaluable opportunities to study the dynamical interaction between a substellar companion and a dusty disk. We present the first ALMA observation of the system as well as the continued Gemini Planet Imager monitoring of the companion’s orbit with six new epochs from 2016 to 2018. We update the orbital fit, and in combination with absolute astrometry from GAIA, place a 3 σ upper limit of 18.5 M _J on the companion’s mass. To interpret the ALMA observations, we used radiative transfer modeling to determine the disk properties. We find that the disk is well resolved and nearly edge-on. While the misalignment angle between the disk and the orbit is weakly constrained, due to the short orbital arc available, the data strongly support a (near) coplanar geometry for the system. Furthermore, we find that the models that describe the ALMA data best have inner radii that are close to the companion’s semimajor axis. Including a posteriori knowledge of the system’s SED further narrows the constraints on the disk’s inner radius and places it at a location that is in reasonable agreement with (possibly interior to) predictions from existing dynamical models of disk truncation by an interior substellar companion. HR 2562 has the potential over the next few years to become a new test bed for dynamical interaction between a debris disk and a substellar companion.
Topik & Kata Kunci
Penulis (54)
Stella Yimiao Zhang
Gaspard Duchêne
Robert J. De Rosa
Megan Ansdell
Quinn Konopacky
Thomas Esposito
Eugene Chiang
Malena Rice
Brenda Matthews
Paul Kalas
Bruce Macintosh
Franck Marchis
Stan Metchev
Jenny Patience
Julien Rameau
Kimberly Ward-Duong
Schuyler Wolff
Michael P. Fitzgerald
Vanessa P. Bailey
Travis S. Barman
Joanna Bulger
Christine H. Chen
Jeffrey K. Chilcotte
Tara Cotten
René Doyon
Katherine B. Follette
Benjamin L. Gerard
Stephen Goodsell
James R. Graham
Alexandra Z. Greenbaum
Pascale Hibon
Li-Wei Hung
Patrick Ingraham
Jérôme Maire
Mark S. Marley
Christian Marois
Maxwell A. Millar-Blanchaer
Eric L. Nielsen
Rebecca Oppenheimer
David W. Palmer
Marshall D. Perrin
Lisa A. Poyneer
Laurent Pueyo
Abhijith Rajan
Fredrik T. Rantakyrö
Jean-Baptiste Ruffio
Dmitry Savransky
Adam C. Schneider
Anand Sivaramakrishnan
Inseok Song
Remi Soummer
Sandrine Thomas
Jason J. Wang
Sloane J. Wiktorowicz
Akses Cepat
- Tahun Terbit
- 2023
- Sumber Database
- DOAJ
- DOI
- 10.3847/1538-3881/acbafb
- Akses
- Open Access ✓