Sergio Pilling

The role of external far-ultraviolet irradiation in the survival of astrophysical ices in Elias 29

The survival of astrophysical ices in the star-forming regions depends on the suitability of temperature, density and radiation conditions. In this paper, the role of Interstellar Radiation Field (ISRF) on ices in Elias 29 is addressed. This object is the most luminous protostar in

Triggering photochemical processes in frozen extraterrestrial worlds by soft X-rays

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Production of N3 from irradiation of the N2-rich ices using soft X-rays and cosmic rays analog

Oph E molecular cloud, and is surrounded by many Young Stellar Objects distant only a few arcminutes. In addition, other two brightness BV stars (S1 and HD 147889) enhance the external irradiation in Elias 29. This study was carried out by using the Monte Carlo radiative transfer code RADMC-3D assuming an internal and external irradiation. As result, we found that HD 147889 dominates the ISRF, instead of the closest protostars, and contributes to enhance the external irradiation in 44 times the standard value. Furthermore, remarkable effects are observed in FIR spectrum, as well as in near-IR image. Additionally, the snowline positions of volatile compounds, such as CO, O

Irradiation effects in CO and CO2 ices induced by swift heavy Ni ions at 46 MeV and 537 MeV

_2

Astrophysical Icy Surface Simulation under Energetic Particles and Radiation Field in Formic Acid

, N

Ion irradiation of pure and amorphous CH4 ice relevant for astrophysical environments

_2

Processing of N2O ice by fast ions: implications on nitrogen chemistry in cold astrophysical environments

and CH

Radiolysis of N2-rich astrophysical ice by swift oxygen ions: implication for space weathering of outer solar system bodies

_4

SO3 formation from the X-ray photolysis of SO2 astrophysical ice analogues: FTIR spectroscopy and thermodynamic investigations

are redefined to a toroidal-shaped morphology in the envelope, with low FUV flux (10

Formation of unsaturated hydrocarbons by cosmic ray analogs in interstellar ices

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