Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...166..216t&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 166, no. 1-2, Sept. 1986, p. 216-224.
Astronomy and Astrophysics
Astrophysics
20
Abundance, Beryllium, F Stars, Lithium, Main Sequence Stars, Metallicity, Convection Currents, Stellar Temperature, Turbulent Diffusion
Scientific paper
Lithium and beryllium deficient field F stars have been studied in view of understanding whether the depletion is due to turbulent mixing under the convection zone and nuclear destruction, or to microscopic diffusion (gravitational settling). The authors concluded that there are two groups of lithium and beryllium deficient field F stars: those with the effective temperatures (Te) smaller than 6500K, which appear to be, on the average, more rapid rotators than normal stars with the same Te, are depleted by nuclear destruction, while those with Te larger than 6500K, which are slower rotators than normal stars of the same effective temperatures, are depleted by microscopic diffusion. Consequences about turbulent conditions under the convection zones of these F stars are discussed, on the basis of Zahn (1983) phenomenological treatment of turbulence induced by differential rotation.
Thévenin Frédéric
Vauclair Gerard
Vauclair Sylvie
No associations
LandOfFree
A new step towards the explanation of lithium- and beryllium-deficient F stars. I - The field stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A new step towards the explanation of lithium- and beryllium-deficient F stars. I - The field stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new step towards the explanation of lithium- and beryllium-deficient F stars. I - The field stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1290112