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The evolution of the lithium abundances of solar-type stars. III - The PleiadesNew measurements of lithium in more than 100 Pleiades F, G, and K dwarfs are reported. Abundances are determined from spectrum synthesis fits to the data as well as from use of new covers of growth from the Li 6708-A feature. It is argued that most Late-F and early-G dwarfs in the Pleiades are consistent with the tight N(Li) vs mass relation seen in the Hyades in the same mass range. Most Li-rich stars have abundances at or near the primordial level for Population I, and none exceed that level by a significant amount. At any given color the stars that rotate fast have the most Li and have the strongest chromospheric activity. Ways in which an apparent spread in N(Li) could arise from an intrinsically tight n(Li)-mass relation are considered, and it is concluded that the spread is probably real and is not an artifact of line formation conditions or inhomogeneous atmospheres on the stars.
Document ID
19930071633
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Soderblom, David R. (Space Telescope Science Inst. Baltimore, MD, United States)
Jones, Burton F. (Lick Observatory Santa Cruz, CA, United States)
Balachandran, Suchitra (North Carolina Univ. Chapel Hill, United States)
Stauffer, John R. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Duncan, Douglas K. (Chicago Univ. IL, United States)
Fedele, Stephen B. (Space Telescope Science Inst. Baltimore, MD, United States)
Hudon, J. D. (Toronto Univ. Canada)
Date Acquired
August 16, 2013
Publication Date
September 1, 1993
Publication Information
Publication: Astronomical Journal
Volume: 106
Issue: 3
ISSN: 0004-6256
Subject Category
ASTROPHYSICS
Distribution Limits
Public
Copyright
Other