283 citations · 1k across the 17 of their papers we have counts for
6 papers · 2 filters
Lithium in Very Metal-poor Dwarf Stars - Problems for Standard Big Bang Nucleosynthesis?
David L. Lambert
The standard model of primordial nucleosynthesis by the Big Bang as selected by the WMAP-based estimate of the baryon density () predicts an abundance of Li that is a f…
FUSE Measurements of Interstellar Fluorine
S. R. Federman, Yaron Sheffer, David L. Lambert +1
The source of fluorine is not well understood, although core-collapse supernovae, Wolf-Rayet stars, and asymptotic giant branch stars have been suggested. A search for evidence of…
The R Coronae Borealis stars - carbon abundances from forbidden carbon lines
Gajendra Pandey, David L. Lambert, N. Kameswara Rao +3
Spectra of several R Coronae Borealis (RCB) stars at maximum light were examined for the [C I] 9850 A and 8727 A absorption lines. The 9850 A line is variously blended with a Fe II…
The Interstellar Rubidium Isotope Ratio toward Rho Ophiuchi A
S. R. Federman, David C. Knauth, David L. Lambert
The isotope ratio, 85Rb/87Rb, places constraints on models of the nucleosynthesis of heavy elements, but there is no precise determination of the ratio for material beyond the Sola…
Abundances of neutron-capture elements in the Hot Extreme-Helium Stars V1920 Cygni and HD 124448
Gajendra Pandey, David L. Lambert, N. Kameswara Rao +1
Analysis of HST STIS ultraviolet spectra of two hot extreme helium stars (EHes): V1920 Cyg and HD 124448 provide the first measurements of abundances of neutron-capture elements fo…
Lithium Abundances of the Local Thin Disk Stars
David L. Lambert, Bacham E. Reddy
Lithium abundances are presented for a sample of 181 nearby F and G dwarfs with accurate {\it Hipparcos} parallaxes. The stars are on circular orbits about the Galactic centre and,…