62 citations · 230 across the 12 of their papers we have counts for
12 papers
A Critical UV Legacy: A Hubble Roadmap for HWO Science Readiness
Sarah Peacock, Aiden S. Zelakewicz, Lisa Kaltenegger +14
The Habitable Worlds Observatory (HWO) will provide the first opportunity to directly image and spectrally characterize terrestrial exoplanets in the habitable zones of nearby star…
HWO Target Stars and Systems: A Survey of Archival UV and X-ray Data
Sarah Peacock, David J. Wilson, Tyler Richey-Yowell +14
We assess archival high-energy data for key stars on the Habitable Worlds Observatory (HWO) Target Stars and Systems 2025 list, as stellar radiation is critical to shaping and inte…
Why M-dwarf flares have limited impact on the atmospheric evaporation of sub-Neptunes and Earth-sized planets
Andrea Caldiroli, Francesco Haardt, Elena Gallo +4
M-type stars are prime targets for exoplanet searches within their habitable zones (HZs). These stars also exhibit significant magnetic flaring activity, particularly during their…
Windows Into Other Worlds: Pitfalls in the physical interpretation of exoplanet atmospheric spectroscopy
Darius Modirrousta-Galian, Riccardo Spinelli, Antonio Jimenez-Escobar
Atmospheric spectroscopy provides a window into the properties of exoplanets. However, the physical interpretation of retrieved data and its implications for the internal propertie…
Evaporation of Close-in Sub-Neptunes by Cooling White Dwarfs
Elena Gallo, Andrea Caldiroli, Riccardo Spinelli +5
Motivated by the recent surge in interest concerning white dwarf (WD) planets, this work presents the first numerical exploration of WD-driven atmospheric escape, whereby the high-…
Self-Consistent Modeling of Metastable Helium Exoplanet Transits
Federico Biassoni, Andrea Caldiroli, Elena Gallo +3
Absorption of stellar X-ray and Extreme Ultraviolet radiation in the upper atmosphere of close-in exoplanets can give rise to hydrodynamic outflows, which may lead to the gradual s…
XUV emission of the young planet-hosting star V1298\,Tau from coordinated observations with XMM-Newton and HST
A. Maggio, I. Pillitteri, C. Argiroffi +16
Atmospheric mass loss plays a major role in the evolution of exoplanets. This process is driven by the stellar high-energy irradiation, especially in the first hundreds of millions…
The ultraviolet habitable zone of exoplanets
Riccardo Spinelli, Francesco Borsa, Giancarlo Ghirlanda +2
The dozens of rocky exoplanets discovered in the Circumstellar Habitable Zone (CHZ) currently represent the most suitable places to host life as we know it outside the Solar System…
Planetary parameters, XUV environments and mass-loss rates for nearby gaseous planets with X-ray detected host-stars
R. Spinelli, E. Gallo, F. Haardt +4
We leverage Gaia DR2 parallactic distances to deliver new or revised estimates of planetary parameters and X-ray irradiation for a distance-limited ( pc) sample of 27…
Irradiation-driven escape of primordial planetary atmospheres II. Evaporation efficiency of sub-Neptunes through hot Jupiters
Andrea Caldiroli, Francesco Haardt, Elena Gallo +3
Making use of the publicly available 1D photoionization hydrodynamics code ATES we set out to investigate the combined effects of planetary gravitational potential energy ($ϕ_p\equ…
Irradiation-driven escape of primordial planetary atmospheres I. The ATES photoionization hydrodynamics code
Andrea Caldiroli, Francesco Haardt, Elena Gallo +3
Intense X-ray and ultraviolet stellar irradiation can heat and inflate the atmospheres of closely orbiting exoplanets, driving mass outflows that may be significant enough to evapo…
Multi-wavelength view of the close-by GRB 190829A sheds light on gamma-ray burst physics
O. S. Salafia, M. E. Ravasio, J. Yang +12
Gamma-ray bursts are produced as a result of cataclysmic events such as the collapse of a massive star or the merger of two neutron stars. We monitored the position of the close-by…