COULD THE PLANETS AROUND HR 8799 BE BROWN DWARFS?
Journal Article
·
· Astrophysical Journal Letters
- Departamento de Astrofisica, CAB (CSIC-INTA), Instituto Nacional de Tecnica Aeroespacial, Torrejon de Ardoz, 28850 Madrid (Spain)
- Steward Observatory, University of Arizona, 933 North Cherry Ave., Tucson, AZ 85721 (United States)
We consider the limiting case for orbital stability of the companions to HR 8799. This case is only consistent with ages for the system of {approx}100 Myr, not with the 1 Gyr age proposed from asteroseismology. The discrepancy probably arises because the inclination of the star is smaller than assumed in analyzing the asteroseismology data. Given this young age, the best estimates of the companion masses place them by a small margin on the planet side of the division between planets and brown dwarfs.
- OSTI ID:
- 21452765
- Journal Information:
- Astrophysical Journal Letters, Vol. 721, Issue 2; Other Information: DOI: 10.1088/2041-8205/721/2/L199; ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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