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13 papers · 2 filters
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…
The origin and evolution of r- and s-process elements in the Milky Way stellar disk
Chiara Battistini, Thomas Bensby
Knowledge of abundance ratios as functions of metallicity can lead to insights on the origin and evolution of our Galaxy and its stellar populations. We aim to trace the chemical e…
The FERRUM project: Experimental lifetimes and transition probabilities from highly excited even 4d levels in Fe ii
H. Hartman, H. Nilsson, L. Engström +1
We report lifetime measurements of the 6 levels in the 3d6(5D)4d e6G term in Fe ii at an energy of 10.4 eV, and f -values for 14 transitions from the investigated levels. The lifet…
The Gaia-ESO Survey: chemical signatures of rocky accretion in a young solar-type star
L. Spina, F. Palla, S. Randich +23
It is well known that newly formed planetary systems undergo processes of orbital reconfiguration and planetary migration. As a result, planets or protoplanetary objects may accret…
Stellar science from a blue wavelength range - A possible design for the blue arm of 4MOST
C. J. Hansen, H. -G. Ludwig, W. Seifert +12
From stellar spectra, a variety of physical properties of stars can be derived. In particular, the chemical composition of stellar atmospheres can be inferred from absorption line…
The nature of the KFR08 stellar stream
C. Liu, S. Feltzing, G. Ruchti
The origin of a new kinematically identified metal-poor stellar stream, the KFR08 stream, has not been established. We present stellar parameters, stellar ages, and detailed elemen…