A. S. Binks
A lithium depletion boundary age of 21 Myr for the Beta Pictoris moving group
Binks, A. S.; Jeffries, R. D.
Abstract
Optical spectroscopy is used to confirm membership for eight low-mass candidates in the young Beta Pic moving group (BPMG) via their radial velocities, chromospheric activity and kinematic parallaxes. We searched for the presence of the Li I 6708 Å resonance feature and combined the results with literature measurements of other BPMG members to find the age-dependent lithium depletion boundary (LDB) – the luminosity at which Li remains unburned in a coeval group. The LDB age of the BPMG is 21 ± 4 Myr and insensitive to the choice of low-mass evolutionary models. This age is more precise, likely to be more accurate, and much older than that commonly assumed for the BPMG. As a result, substellar and planetary companions of BPMG members will be more massive than previously thought.
Citation
Binks, A. S., & Jeffries, R. D. (2014). A lithium depletion boundary age of 21 Myr for the Beta Pictoris moving group. Monthly Notices of the Royal Astronomical Society: Letters, 438(1), L11-L15. https://doi.org/10.1093/mnrasl/slt141
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 9, 2013 |
Online Publication Date | Nov 19, 2013 |
Publication Date | Feb 11, 2014 |
Deposit Date | Jun 13, 2023 |
Journal | Monthly Notices of the Royal Astronomical Society: Letters |
Electronic ISSN | 1745-3933 |
Publisher | Oxford University Press |
Peer Reviewed | Peer Reviewed |
Volume | 438 |
Issue | 1 |
Pages | L11-L15 |
DOI | https://doi.org/10.1093/mnrasl/slt141 |
Keywords | Space and Planetary Science; Astronomy and Astrophysics |
You might also like
The Gaia-ESO Survey: Homogenisation of stellar parameters and elemental abundances
(2023)
Journal Article
The Gaia-ESO Survey: Preparing the ground for 4MOST and WEAVE galactic surveys
(2023)
Journal Article
The structure and 3D kinematics of vela OB2
(2022)
Journal Article
Downloadable Citations
About Keele Repository
Administrator e-mail: research.openaccess@keele.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2025
Advanced Search