The Angular Diameter and Effective Temperature of the Lithium-Rich K Giant HD 148293 from the CHARA Array

Christopher D. Farrington; Ellyn K. Baines; Harold A. McAlister; Judit Sturmann; Laszlo Sturmann; Nils H. Turner; P. J. Goldfinger; Stephen T. Ridgway; Theo A. ten Brummelaar

arxiv: 1103.2742 · v1 · pith:WS3NVTC2new · submitted 2011-03-14 · 🌌 astro-ph.SR

The Angular Diameter and Effective Temperature of the Lithium-Rich K Giant HD 148293 from the CHARA Array

Ellyn K. Baines , Harold A. McAlister , Theo A. ten Brummelaar , Nils H. Turner , Judit Sturmann , Laszlo Sturmann , P. J. Goldfinger , Christopher D. Farrington

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Stephen T. Ridgway

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classification 🌌 astro-ph.SR

keywords angulararraycharadiametereffectivegiantlithium-richstar

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We measured the angular diameter of the lithium-rich K giant star HD 148293 using Georgia State University's Center for High Angular Resolution Astronomy (CHARA) Array interferometer. We used our measurement to calculate the star's effective temperature, which allowed us to place it on an H-R diagram to compare it with other Li-rich giants. Its placement supports the evidence presented by Charbonnel & Balachandran that it is undergoing a brief stage in its evolution where Li is being created.

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The Angular Diameter and Effective Temperature of the Lithium-Rich K Giant HD 148293 from the CHARA Array

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