Characterization of the Host Binary of the Directly Imaged Exoplanet HD 143811 AB b
Abstrak
HD 143811 AB is the host star to the directly imaged planet HD 143811 AB b, which was recently discovered using data from the Gemini Planet Imager and Keck NIRC2. A member of the Sco-Cen star-forming region with an age of 13 ± 4 Myr, HD 143811 AB is somewhat rare among hosts of directly imaged planets, as it is a close stellar binary, with an ∼18-day period. Accurate values for the orbital and stellar parameters of this binary are needed to understand the formation and evolutionary history of the planet in orbit. We utilize archival high-resolution spectroscopy from FEROS on the MPG/ESO 2.2 m telescope to fit the orbit of the binary, and we combine with unresolved photometry to derive the basic stellar properties of the system. From the orbit, we derive precise values of orbital period of 18.59090 ± 0.00007 days and mass ratio of 0.886 ± 0.003. When combined with stellar evolutionary models, we find masses of both components of ${M}_{{\rm{A}}}=1.3{0}_{-0.05}^{+0.03}$ M _⊙ and ${M}_{{\rm{B}}}=1.1{5}_{-0.04}^{+0.03}$ M _⊙ . While the current data are consistent with the planet and stellar orbits being coplanar, the 3D orientations of both systems are currently poorly constrained, with additional observations required to more rigorously test for coplanarity.
Topik & Kata Kunci
Penulis (53)
Anne E. Peck
William Roberson
Eric L. Nielsen
Robert J. De Rosa
Nathalie Jones
Jason Wang
Bruce A. Macintosh
Briley L. Lewis
Gaspard Duchêne
Stanimir Metchev
Asif Abbas
Jerry W. Xuan
Aniket Sanghi
Jennifer Patience
Travis S. Barman
Joanna Bulger
Jeffrey K. Chilcote
Thomas M. Esposito
Michael P. Fitzgerald
Katherine B. Follette
Hannah Gallamore
Stephen Goodsell
James R. Graham
Alexandra Z. Greenbaum
Pascale Hibon
Patrick Ingraham
Paul Kalas
Quinn M. Konopacky
Franck Marchis
Jérôme Maire
Christian Marois
Brenda Matthews
Dimitri Mawet
Maxwell A. Millar-Blanchaer
Rebecca Oppenheimer
David W. Palmer
Marshall D. Perrin
Lisa Poyneer
Laurent Pueyo
Abhijith Rajan
Julien Rameau
Fredrik T. Rantakyrö
Bin Ren
Jean-Baptiste Ruffio
Dmitry Savransky
Adam C. Schneider
Anand Sivaramakrishnan
Adam J. R. W. Smith
Inseok Song
Remi Soummer
Sandrine Thomas
Kimberly Ward-Duong
Schuyler G. Wolff
Akses Cepat
- Tahun Terbit
- 2025
- Sumber Database
- DOAJ
- DOI
- 10.3847/2041-8213/ae1a67
- Akses
- Open Access ✓