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The evolutionary status of GK subgiants
Snowden & Young (2005ApJS..157..126S) suggested that the reason why there are GK subgiants is because they are members of binaries, which would bring them above the main... -
Radial velocities and bisector spans for K2-287
We report the discovery of K2-287b, a Saturn mass planet orbiting a G-dwarf with a period of P~15 days. First uncovered as a candidate using K2 campaign 15 data, follow-up... -
Radial velocities for the star HD 34445
We present a new precision radial velocity (RV) data set that reveals a multi-planet system orbiting the G0V star HD 34445. Our 18-year span consists of 333 precision RV... -
Li abundance of solar-type stars. II.
We draw upon a recent study of the membership of the Ursa Major Group (UMaG) to examine lithium among 0.3 Gyr old solar-type stars. For most G and K dwarfs, Li confirms the... -
uvby Photometry of G-type dwarfs
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uvby-beta Photometry of G5 stars
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Stellar chromospheric activity of LAMOST sources
The dependence of stellar magnetic activity on stellar parameters is inspired by the chromospheric activity studies based on the large-scale spectroscopic surveys. The main... -
K2 asteroseismic KEYSTONE Sample. I.
The KEYSTONE project aims to enhance our understanding of solar-like oscillators by delivering a catalogue of global asteroseismic parameters ({Delta}{nu} and {nu}max) for 173... -
NGTS-30 b/TOI-4862 b velocity curve
Long-period transiting exoplanets bridge the gap between the bulk of transit- and Doppler-based exoplanet discoveries, providing key insights into the formation and evolution of... -
8 solar-like pulsating stars
The NASA K2 mission that succeeded the nominal Kepler mission observed several hundred thousand stars during its operations. While most of the stars were observed in single... -
Carbon and oxygen in microlensed bulge dwarfs
Next to H and He, carbon is, together with oxygen, the most abundant element in the Universe and widely used when modelling the formation and evolution of galaxies and their... -
DS Tuc A radial velocity curve
The observations of young close-in exoplanets are providing first indications of the characteristics of the population and, in turn, clues on the early stages of their... -
Radial velocity measurements of 51 Peg
The analysis of exoplanetary atmospheres by means of high-resolution spectroscopy is an expanding research field which provides information o n chemical composition, thermal... -
zet01 Ret and zet02 activity indexes
We explore if the star zet02 Ret, which belongs to a binary system, is in (or going to) a state similar to the MM. To do so, we have collected more than 430 spectra acquired... -
Abundances of 72 solar-type stars
Previous high-precision studies of abundances of elements in solar twin stars are extended to a wider metallicity range to see how the trends of element ratios with stellar age... -
Lithium abundances in microlensed bulge dwarfs
Lithium abundances are presented for 91 dwarf and subgiant stars in the Galactic bulge. The analysis is based on line synthesis of the ^7^Li line at 6707{AA} in high-resolution... -
Linear regression fit coefficients
The physical processes driving chemical evolution in the Milky Way can be probed using the distribution of abundances in low-mass FGK type stars in space phase at different... -
Lithium abundances in 714 F and G dwarf stars
We perform a detailed analysis of Li in 714 nearby dwarf stars. Li abundances were determined through spectral line synthesis of the Li feature at 670.8 nm. The stellar sample... -
C/O vs Mg/Si ratios in solar type stars
We aim to present a detailed study of the magnesium-to-silicon and carbon-to-oxygen ratios (Mg/Si and C/O) and their importance in determining the mineralogy of planetary... -
Kepler solar-type stars modeling
The Kepler space telescope yielded unprecedented data for the study of solar-like oscillations in other stars. The large samples of multi-year observations posed an enormous...
