SIMBAD references

2002AJ....124.2799W - Astron. J., 124, 2799-2812 (2002/November-0)

Evolution of the lithium abundance of solar-type stars. X. Does accretion affect the lithium dispersion in the Pleiades.


Abstract (from CDS):

Sixteen G and K dwarfs in the Pleiades cluster were analyzed for evidence that accretion of hydrogen-depleted planetesimals has contributed to the lithium dispersion observed in cluster stars of similar effective temperature. The HiRes spectrograph on the Keck 10 m telescope was used to obtain spectra of slowly rotating Pleiades stars having similar effective temperatures but different lithium abundances. The high-resolution echelle spectra were analyzed for a possible dispersion in the metal abundances correlated with the observed dispersion in lithium abundance. The existence of such a correlation would support the possibility that young stars can replenish their surface lithium by accreting hydrogen-depleted material from a circumstellar disk. The narrow dispersion in the metal abundances of the observed stars makes it unlikely that accretion plays a role in the dispersion in lithium abundances.

Abstract Copyright:

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: Name: Pleiades - Stars: Planetary Systems: Formation - Stars: Planetary Systems: Protoplanetary Disks - Stars: Abundances

Simbad objects: 26

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