Composite Spectra, Paper XXIII: HD 69479/80, a 90‐day binary with a cool‐giant primary

HD 69479/80 is a composite‐spectrum binary whose components are a late‐G giant and an early‐A dwarf. The orbit has a period of only 91 days (which seems short for a system containing a cool giant with a radius of ∼13 solar radii), and a very small, but probably significantly non‐zero, eccentricity....

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Veröffentlicht in:	Astronomische Nachrichten 2020-10, Vol.341 (8), p.791-800
Hauptverfasser:	Griffin, R. Elizabeth, Griffin, Roger F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Ascent Cool stars Dwarf stars Lithium Radial velocity Rotation Spectra stars: binaries: spectroscopic – stars: rotation, evolution – stars: individual: HD 69479/80 Stellar evolution Subtraction
Online-Zugang:	Volltext
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