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Low-mass visual companions to nearby G-dwarfs
A complete census of wide visual companions to nearby G-dwarf stars can be achieved by selecting candidates from the Two Micron All Sky Survey (2MASS) Point-Source Catalog and... -
TOI-1736 and TOI-2141 SOPHIE observations
Planetary systems around solar analogs inform us about how planets form and evolve in solar system-like environments. We report the detection and characterization of two... -
Superflares on solar-like stars
Over the past years, thousands of stellar flares have been detected by harvesting data from large photometric surveys. These detections, however, do not account for potential... -
Anti-solar differentially rotating stars
Anti-solar differential rotation profiles have been found for decades in numerical simulations of convective envelopes of solar-type stars. These profiles are characterized by a... -
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... -
Activity cycles in young solar-like stars
Magnetic cycles analogous to the solar cycle have been detected in tens of solar-like stars by analyzing long-term time series of different magnetic activity indexes. The... -
Glycolaldehyde in Perseus young solar analogs
The earliest evolutionary stages of low-mass protostars are characterised by the so-called hot-corino stage, when the newly born star heats the surrounding material and enrich... -
The Solar Twin Planet Search. IV.
It is still unclear how common the Sun is when compared to other similar stars in regards to some of its physical properties, such as rotation. Considering that gyrochronology... -
G and K giant stars stellar parameters
We have obtained precise radial velocities for a sample of 373 G and K type giants at Lick Observatory regularly over more than 12 years. Planets have been identified around 15... -
Pulsating solar-like stars in Kepler
Kepler ultra-high precision photometry of long and continuous observations provides a unique dataset in which surface rotation and variability can be studied for thousands of... -
Identification of metal-poor stars with ANN
Identification of metal-poor stars among field stars is extremely useful for studying the structure and evolution of the Galaxy and of external galaxies. We search for... -
Abundances in solar analogs
We derive the abundance of 19 elements in a sample of 64 stars with fundamental parameters very similar to solar, which minimizes the impact of systematic errors in our...
