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KIC 9821622: An interesting lithium-rich giant in the Kepler field
(EDP Sciences, 2015-12)
We report the discovery of a new exceptional young lithium-rich giant, KIC 9821622, in the Kepler field that exhibits an unusually large enhancement of α, Fe-peak, and r-process elements. From high-resolution spectra ...
ALMA observations of anisotropic dust mass loss in the inner circumstellar environment of the red supergiant VY Canis Majoris
(EDP Sciences, 2015)
The processes leading to dust formation and the subsequent role it plays in driving mass loss in cool evolved stars is an area of intense study. Here we present high resolution ALMA Science Verification data of the continuum ...
Measuring stellar differential rotation with high-precision space-borne photometry
(EDP Sciences, 2014)
The Gaia-ESO Survey: Calibrating the lithium–age relation with open clusters and associations
(European Southern Observatory, 2020)
Context. Previous studies of open clusters have shown that lithium depletion is not only strongly age dependent but also shows a complex pattern with other parameters that is not yet understood. For pre- and main-sequence ...
The near-ultraviolet luminosity function of young, early M-type dwarf stars
(Iop Publishing, 2015-01)
Planets orbiting within the close-in habitable zones of M dwarf stars will be exposed to elevated high-energy radiation driven by strong magneto-hydrodynamic dynamos during stellar youth. Near-ultraviolet (NUV) irradiation ...
Physical parameters of late M-type members of Chamaeleon I and TW Hydrae Association: Dust settling, age dispersion and activity
(2017)
Although mid-to-late type M dwarfs are the most common stars in our stellar neighbourhood, our knowledge of these objects is still limited. Open questions include the evolution of their angular momentum, internal structures, ...
Spectroscopic variability and magnetic fields of HgMn stars
(Wiley Vch Verlag, 2011-12)
The discovery of exotic abundances, chemical inhomogeneities, and weak magnetic fields on the surface of late B-type primaries in spectroscopic binaries has important implications not only for our understanding of the ...
Determination of the spectroscopic stellar parameters for 257 field giant stars
(OXFORD UNIV PRESS, 2015)
The study of stellar parameters of planet-hosting stars, such as metallicity and chemical abundances, help us to understand the theory of planet formation and stellar evolution. Here, we present a catalogue of accurate ...