27 citations · 72 across the 7 of their papers we have counts for
7 papers
A reanalysis of the LHS 1140 b atmosphere observed with the Hubble Space Telescope
Alfredo Biagini, Gianluca Cracchiolo, Antonino Petralia +3
The super-Earth LHS 1140 b is an interesting target for atmospheric observations since it is close to the habitable zone of its star and falls in the gap of the radius distribution…
Correcting Exoplanet Transmission Spectra for Stellar Activity with an Optimised Retrieval Framework
Alexandra Thompson, Alfredo Biagini, Gianluca Cracchiolo +7
The chromatic contamination that arises from photospheric heterogeneities e.g. spots and faculae on the host star presents a significant noise source for exoplanet transmission spe…
Hiding in plain sight: observing planet-starspot crossings with the James Webb Space Telescope
Giovanni Bruno, Nikole K. Lewis, Jeff A. Valenti +9
Transiting exoplanets orbiting active stars frequently occult starspots and faculae on the visible stellar disc. Such occultations are often rejected from spectrophotometric transi…
The strange case of Na I in the atmosphere of HD209458 b: Reconciling low- and high-resolution spectroscopic observations G
Giuseppe Morello, Núria Casasayas-Barris, Jaume Orell-Miquel +3
Aims. We aim to investigate the origin of the discrepant results reported in the literature about the presence of Na I in the atmosphere of HD209458 b, based on low- and high-resol…
Correcting the effect of stellar spots on ARIEL transmission spectra II.The limb darkening effect
G. Cracchiolo, G. Micela, G. Morello +1
This paper is part of an effort to correct the transmission spectra of a transiting planet orbiting an active star. In Paper I (Cracchiolo et al. 2020) we have demonstrated a metho…
Ariel: Enabling planetary science across light-years
Giovanna Tinetti, Paul Eccleston, Carole Haswell +313
Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was adopted as the fourth medium-class mission in ESA's Cosmic Vision programme to be launched in 2029. Durin…
Correcting the effect of stellar spots on ARIEL transmission spectra
Gianluca Cracchiolo, Giuseppina Micela, Giovanni Peres
The goal of this study is to assess the impact of the stellar spots on the extraction of the planetary transmission spectra observed by ARIEL. We develop a method to model the stel…