Publicación
Bridging model and observed stellar spectra
Accurate model stellar fluxes are key for the analysis of observations of individual stars or stellar populations. Model spectra differ from real stellar...
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PublicaciónBright Opportunities for Atmospheric Characterization of Small Planets: Masses and Radii of K2-3 b, c, and d and GJ3470 b from Radial Velocity Measurements and Spitzer TransitsWe report improved masses, radii, and densities for four planets in two bright M-dwarf systems, K2-3 and GJ3470, derived from a combination of new radial...
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PublicaciónBright Points in the Quiet Sun as Observed in the Visible and Near-UV by the Balloon-borne Observatory SUNRISEBright points (BPs) are manifestations of small magnetic elements in the solar photosphere. Their brightness contrast not only gives insight into the thermal...
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PublicaciónBroad-band spectrophotometry of HAT-P-32 b: search for a scattering signature in the planetary spectrumMulticolour broad-band transit observations offer the opportunity to characterize the atmosphere of an extrasolar planet with small- to medium-sized telescopes...
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PublicaciónBroadband transmission spectroscopy of HD 209458b with ESPRESSO: evidence for Na, TiO, or bothContext. The detection and characterization of exoplanet atmospheres is currently one of the main drivers pushing the development of new observing facilities...
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PublicaciónBrown dwarf companion with a period of 4.6 yr interacting with the hot Jupiter CoRoT-20 bWe report the discovery of an additional substellar companion in the CoRoT-20 system based on six years of HARPS and SOPHIE radial velocity follow-up. CoRoT-20...
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PublicaciónCa II 8542 Å brightenings induced by a solar microflareAims: We study small-scale brightenings in Ca II 8542 Å line-core images to determine their nature and effect on localized heating and mass transfer in active...
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PublicaciónCa II and Hα flaring M dwarfs detected with multi-filter photometryContext. Understanding and characterising the magnetic activity of M dwarfs is of paramount importance in the search for Earth-like exoplanets orbiting them...
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PublicaciónCalcium triplet metallicity calibration for stars in the Galactic bulgeAims: We present a new calibration of the calcium II triplet equivalent widths versus [Fe/H], constructed upon K giant stars in the Galactic bulge. This...