Gaia FGK benchmark stars: Effective temperatures and surface gravities

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Table 8

Mean α-element abundances and mass corrections determined from Yonsei-Yale grids: ΔM = M( + 0.3)−M(0.0).

Name	[α/Fe]	Elements	Ref.	ΔM [M_⊙]

HD 84937	+0.4	Mg, Ca	1	0.00
HD 140283	+0.3	Mg, Ca	1	+0.02
ϵ For	+0.25	Si, Ti	2	−0.02
HD 22879	+0.3	Si, Ti	2	0.00
μ Cas	+0.3	Mg, Si, Ca, Ti	3	0.00^†
τ Cet	+0.2	Si, Ca, Ti	2, 3	+0.01
HD 220009	+0.2	Si, Ca, Ti	4	−0.03

Notes.References: (1) Mashonkina et al. (2007); (2) Valenti & Fischer (2005); (3) Luck & Heiter (2005); (4) Luck & Heiter (2007).

^(†)

For μ Cas only the [α/Fe] = +0.3 Yonsei-Yale grid could be used, and the [α/Fe] correction was assumed to be zero, as found for HD 22879.

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