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5 papers · 2 filters
Experimental oscillator strengths of Al I lines for near-infrared astrophysical spectroscopy
Madeleine Burheim, Henrik Hartman, Hampus Nilsson
Elemental abundances can be determined from stellar spectra, making it possible to study galactic formation and evolution. Accurate atomic data is essential for the reliable interp…
Solar Photospheric Spectrum Microvariability I. Theoretical searches for proxies of radial-velocity jittering
Dainis Dravins, Hans-Günter Ludwig
Extreme precision radial-velocity spectrometers enable extreme precision stellar spectroscopy. Searches for low-mass exoplanets around solar-type stars are limited by the physical…
Reanalysis of neutron-capture elements in the benchmark r-rich star CS 31082-001
H. Ernandes, M. J. Castro, B. Barbuy +4
We revisit the abundances of neutron-capture elements in the metal-poor ([Fe/H]=-2.9) r-process-rich halo star CS 31082-001. Partly motivated by the development of the new near-ult…
M giants with IGRINS I. Stellar parameters and -abundance trends of the solar neighborhood population
G. Nandakumar, N. Ryde, L. Casagrande +1
Cool stars, such as M giants, can only be analysed in the near-infrared (NIR) regime due to the ubiquitous TiO features in optical spectra of stars with Teff < 4000 K. In dust obsc…
Searching for the nature of stars with debris disks and planets
R. de la Reza, C. Chavero, S. Roca-Fàbrega +3
The nature of the few known solar-mass stars simultaneously containing debris disks and planets remains an open question. A number of works have shown that this property appears to…