The relationship between lithium and activity in disk population main sequence G and K stars.

Details The relationship between lithium and activity in disk population main sequence G and K stars. The relationship between lithium and activity in disk population main sequence G and K stars.

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...322..131f&link_type=abstract

Astronomy and Astrophysics, v.322, p.131-138

Astronomy and Astrophysics

Astrophysics

25

Stars: Abundances, Stars: Late-Type

Scientific paper

We present determinations of the lithium abundance (through observations of the LiI 6707.8Å line) in a sample of main sequence stars with spectral types ranging from late F down to M0, selected from the sample of nearby stars which have been observed with the Einstein observatory. We show that lithium abundance is correlated with X-ray luminosity for the cooler stars in our sample (4700>T_eff_>4000), while no correlation is present for the hotter stars. However, the correlation is almost completely driven by a very small number of high lithium, high X-ray luminosity (and thus plausibly very young) cool dwarfs present in the sample. A number of high lithium K dwarfs are present in the survey, and their characteristics and likely age are discussed in detail.

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