A new abundance analysis of the super-metal-rich K2 giant, mu Leonis

Details A new abundance analysis of the super-metal-rich K2 giant, mu Leonis A new abundance analysis of the super-metal-rich K2 giant, mu Leonis

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...356..570s&link_type=abstract

Astronomy and Astrophysics, v.356, p.570-578 (2000)

Astronomy and Astrophysics

Astrophysics

13

Stars: Abundances, Stars: Fundamental Parameters, Book Reviews, Stars: Late-Type

Scientific paper

Spectra of the super-metal-rich K2 giant, mu Leonis, have been recorded at high resolution (lambda /Delta lambda =~ 105) and with signal/noise =~ 200, in selected regions between 5250 and 8810 Ä. An LTE model atmospheres analysis of these spectra, with particular attention to blending by CN molecular lines, suggests that the wings of strong lines and the full profiles of intermediate strength lines are consistent with the following atmospheric parameters and logarithmic abundances, relative to the Sun: T_eff = 4540+/- 50 K, log g = 2.2+/- 0.1 dex, Microturbulence, xi = 1.2+/- 0.1 km s-1, Macroturbulence/rotation, zeta = 2.9+/- 0.2 km s-1, [Fe/H] = +0.29+/- 0.03 dex ~(relative to epsilon (Fe)sun = 7.50), [Ca/H] = +0.32+/- 0.05 dex ~(relative to epsilon (Ca)sun = 6.36), [Mg/H] = +0.32+/- 0.05 dex ~(relative to epsilon (Mg)sun = 7.58). In view of the continuing controversy over the extent to which mu Leo is metal rich, we provide a critical review of other recent metallicity determinations and compare the present results with our own analyses, undertaken using essentially identical methods, of the spectra of other late-type giant stars in the solar neighbourhood.

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