Strong lithium in the very nearby K-dwarf HD 17925

Details Strong lithium in the very nearby K-dwarf HD 17925 Strong lithium in the very nearby K-dwarf HD 17925

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...218l...9c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 218, no. 1-2, July 1989, p. L9-L12.

Astronomy and Astrophysics

Astrophysics

30

Dwarf Stars, K Stars, Lithium, Stellar Atmospheres, Stellar Interiors, Abundance, Cool Stars, Depletion, Solar Neighborhood, Star Formation, Visible Spectrum

Scientific paper

On a Reticon spectrum centered at 6714 A, taken with the 1.4 m coude auxiliary telescope and with the coude echelle spectrograph of ESO, it was found that the cool K2V star, HD 17925 has a very strong lithium line. This strong lithium line in such a cool star (5090 K) indicates that HD 17925 must be very yound. Even in the comparatively young Hyades, lithium is already totally depleted in stars with effective temperatures around 5000 K. It is proposed that the star comes from the Scorpio-Centaurus complex where it was formed only a few million years ago.

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