TY - GEN
T1 - Lithium isotopic abundances in stars
AU - Nissen, Poul Erik
AU - Asplund, Martin
PY - 2008
Y1 - 2008
N2 - The Li isotope ratio, 6Li/7Li, in stars can be determined from the isotopic shift in the Li I 670.8 nm resonance line. Because of the small effect this however requires truly precision spectroscopy: spectral resolving power R ≥ 105 and S/N ≥ 500. In this review we discuss the method and what one can learn from Li isotopic abundances in terms of Big-Bang nucleosynthesis, cosmic ray production of Li, stellar structure, and planet formation. Some instrumental problems and the need for new instrumentation are briefly discussed.
AB - The Li isotope ratio, 6Li/7Li, in stars can be determined from the isotopic shift in the Li I 670.8 nm resonance line. Because of the small effect this however requires truly precision spectroscopy: spectral resolving power R ≥ 105 and S/N ≥ 500. In this review we discuss the method and what one can learn from Li isotopic abundances in terms of Big-Bang nucleosynthesis, cosmic ray production of Li, stellar structure, and planet formation. Some instrumental problems and the need for new instrumentation are briefly discussed.
UR - http://www.scopus.com/inward/record.url?scp=36448944774&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-75485-5_1
DO - 10.1007/978-3-540-75485-5_1
M3 - Conference contribution
AN - SCOPUS:36448944774
SN - 9783540754848
T3 - ESO Astrophysics Symposia
SP - 3
EP - 8
BT - Precision Spectroscopy in Astrophysics
A2 - Santos, Nuno C.
A2 - Pasquini, Luca
A2 - Romaniello, Martino
A2 - Correia, Alexandre C. M.
ER -