0000000000999177

AUTHOR

Matteo Pinamonti

showing 2 related works from this author

HADES RV programme with HARPS-N at TNG: XII. The abundance signature of M dwarf stars with planets

2020

[Context] Most of our current knowledge on planet formation is still based on the analysis of main sequence, solar-type stars. Conversely, detailed chemical studies of large samples of M dwarfs hosting planets are still missing.

astro-ph.SRStellar massMetallicityFOS: Physical sciencesTechniques: spectroscopicStars: late-typeAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics01 natural sciencesspectroscopic [Techniques]Settore FIS/05 - Astronomia E AstrofisicaPrimary (astronomy)PlanetAbundance (ecology)0103 physical sciencesAstrophysics::Solar and Stellar Astrophysics010303 astronomy & astrophysicsSolar and Stellar Astrophysics (astro-ph.SR)Astrophysics::Galaxy AstrophysicsEarth and Planetary Astrophysics (astro-ph.EP)Physics010308 nuclear & particles physicsStars: abundancesGiant planetAstronomy and Astrophysicsastro-ph.SR; astro-ph.SR; astro-ph.EPRadial velocityStarsPlanetary systemsAstrophysics - Solar and Stellar AstrophysicsSpace and Planetary Scienceabundances [Stars]late-type [Stars]astro-ph.EPAstrophysics::Earth and Planetary AstrophysicsAstrophysics - Earth and Planetary Astrophysics
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The HADES RV Programme with HARPS-N@TNG VIII. Gl15A: A multiple wide planetary system sculpted by binary interaction

2018

We present 20 years of radial velocity (RV) measurements of the M1 dwarf Gl15A, combining 5 years of intensive RV monitoring with the HARPS-N spectrograph with 15 years of archival HIRES/Keck RV data. We carry out an MCMC-based analysis of the RV time series, inclusive of Gaussian Process (GP) approach to the description of stellar activity induced RV variations. Our analysis confirms the Keplerian nature and refines the orbital solution for the 11.44-day period super Earth, Gl15A\,b, reducing its amplitude to $1.68^{+0.17}_{-0.18}$ m s$^{-1}$ ($M \sin i = 3.03^{+0.46}_{-0.44}$ M$_\oplus$), and successfully models a long-term trend in the combined RV dataset in terms of a Keplerian orbit wi…

PhysicsEarth and Planetary Astrophysics (astro-ph.EP)Super-Earth010504 meteorology & atmospheric sciencesmedia_common.quotation_subjectBinary numberFOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsPlanetary system01 natural sciencesRadial velocityOrbitAmplitude13. Climate actionSpace and Planetary SciencePlanet0103 physical sciencesAstrophysics::Earth and Planetary AstrophysicsEccentricity (behavior)010303 astronomy & astrophysics0105 earth and related environmental sciencesmedia_commonAstrophysics - Earth and Planetary Astrophysics
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