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16 papers · 2 filters
The Gaia-ESO Survey: open clusters in Gaia-DR1 - a way forward to stellar age calibration
S. Randich, E. Tognelli, R. Jackson +42
We describe the methodologies that, taking advantage of Gaia-DR1 and the Gaia-ESO Survey data, enable the comparison of observed open star cluster sequences with stellar evolutiona…
Stellar multiplicity in the Milky Way Galaxy
Edita Stonkute, Ross P. Church, Sofia Feltzing +1
We present our models of the effect of binaries on high-resolution spectroscopic surveys. We want to determine how many binary stars will be observed, whether unresolved binaries w…
Spatially resolved spectroscopy across stellar surfaces. II. High-resolution spectra across HD209458 (G0V)
Dainis Dravins, Hans-Günter Ludwig, Erik Dahlén +1
CONTEXT: High-resolution spectroscopy across spatially resolved stellar surfaces aims at obtaining spectral-line profiles that are free from rotational broadening; the gradual chan…
Spatially resolved spectroscopy across stellar surfaces. I. Using exoplanet transits to analyze 3-D stellar atmospheres
Dainis Dravins, Hans-Günter Ludwig, Erik Dahlén +1
CONTEXT: High-precision stellar analyses require hydrodynamic modeling to interpret chemical abundances or oscillation modes. Exoplanet atmosphere studies require stellar backgroun…
On the Fine Structure Splitting of the 3p43d 4D5/2 and 3p43d 4D7/2 Levels of Fe X
Philip Judge, Roger Hutton, Wenxian Li +1
We study UV spectra obtained with the SO82-B slit spectrograph on board SKYLAB to estimate the fine structure splitting of the Cl-like 3p4 3d 4D J=5/2 and 3p4 3d 4D J=7/2 levels of…
PLATO as it is: a legacy mission for Galactic archaeology
A. Miglio, C. Chiappini, B. Mosser +102
Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high-resolution chrono-chemo-kinematical maps of the Galaxy.…