We observed VB 10 in August and September 2009 using the FORS2 camera of the VLT with the aim of measuring its astrometric motion and of probing for the...
Astrometry with Carte du Ciel plates, San Fernando zone. I. Digitization and measurement using a flatbed scanner
Context: The historic plates of the Carte du Ciel, an international cooperative project launched in 1887, offers valuable first-epoch material for determining...
Asymmetric shocks in χ Cygni observed with linear spectropolarimetry
Aims: We derive information about the dynamics of the stellar photosphere, including pulsation, from a coherent interpretation of the linear polarisation...
Asymmetries of the Stokes V profiles observed by HINODE SOT/SP in the quiet Sun
Aims: A recent analysis of polarization measurements of HINODE SOT/SP in the quiet Sun pointed out very complex shapes of Stokes V profiles. Here we present the...
Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Context. WASP-76 b has been a recurrent subject of study since the detection of a signature in high-resolution transit spectroscopy data indicating an asymmetry...
Atmospheric and seeing forecast: WRF model validation with in situ measurements at ORM
We present a comparison between in situ measurements and forecasted data at the Observatorio del Roque de Los Muchachos. Forecasting is obtained with the...
Atmospheric characterization of the ultra-hot Jupiter MASCARA-2b/KELT-20b. Detection of Ca II, Fe II, Na I, and the Balmer series of H (Hα, Hβ, and Hγ) with high-dispersion transit spectroscopy (Corrigendum)
Atmospheric characterization of the ultra-hot Jupiter MASCARA-2b/KELT-20b. Detection of CaII, FeII, NaI, and the Balmer series of H (Hα, Hβ, and Hγ) with high-dispersion transit spectroscopy
Ultra-hot Jupiters orbit very close to their host star and consequently receive strong irradiation, causing their atmospheric chemistry to be different from the...
Atmospheric characterization of the ultra-hot Jupiter WASP-33b. Detection of Ti and V emission lines and retrieval of a broadened line profile
Ultra-hot Jupiters are highly irradiated gas giant exoplanets on close-in orbits around their host stars. The dayside atmospheres of these objects strongly emit...