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41 papers
High-precision stellar abundances of the elements - methods and applications
Poul Erik Nissen, Bengt Gustafsson
Methods to determine abundances of the elements in the atmospheres of F, G, and K stars with precisions of 0.01-0.03 dex are reviewed. Such high-precision stellar abundances have l…
Dust cleansing of star-forming gas: II. Did late accretion flows change the chemical composition of the solar atmosphere?
Bengt Gustafsson
The possibility that the chemical composition of the solar atmosphere has been affected by radiative dust cleansing of late and weak accretion flows by the proto-sun itself, is exp…
Dust cleansing of star-forming gas I: Did radiation from bright stars affect the chemical composition of the Sun and of M67?
Bengt Gustafsson
The possibility that the solar chemical composition, as well as the similar composition of the rich open cluster M67, have been affected by dust cleansing of the pre-solar/pre-clus…
The Destruction of an Oort Cloud in a rich stellar cluster
Thomas Nordlander, Hans Rickman, Bengt Gustafsson
It is possible that the formation of the Oort Cloud dates back to the earliest epochs of solar system history. At that time, the Sun was almost certainly a member of the stellar cl…
Gravitational scattering of stars and clusters and the heating of the Galactic disk
Bengt Gustafsson, Ross Church, Melvyn B. Davies +1
Could the velocity spread, increasing with time, in the Galactic disk be explained as a result of gravitational interactions of stars with giant molecular clouds (GMCs) and spiral…
The detailed chemical composition of the terrestrial planet host Kepler-10
F. Liu, D. Yong, M. Asplund +7
Chemical abundance studies of the Sun and solar twins have demonstrated that the solar composition of refractory elements is depleted when compared to volatile elements, which coul…