19 citations · 98 across the 9 of their papers we have counts for
9 papers
The enigmatic dance of the HD 189733A system: Does the planet accrete onto the star?
Salvatore Colombo, Ignazio Pillitteri, Antonino Petralia +2
Several studies suggest that the emission properties of a star can be affected by its interaction with a nearby planet. However, the actual observability of these effects remains a…
The X-ray activity of F stars with hot Jupiters: KELT-24 versus WASP-18
I. Pillitteri, S. Colombo, G. Micela +1
X-rays emitted by the coronae of solar-type stars are a feature present in up to late-A types during the main sequence phase. F stars, either with or without hot Jupiters, are usua…
X-ray flares of the young planet host DS Tuc A
I. Pillitteri, C. Argiroffi, A. Maggio +5
Abridged. We observed the 40 Myr old star DS Tuc A with XMM-Newton and recorded two X-ray bright flares, with the second event occurring about 12 ks after the first one. Their dura…
Short term variability of DS Tuc A observed with TESS
Salvatore Colombo, Antonio Petralia, Giuseppina Micela
Impulsive short term variations occur in all kinds of solar-type stars. They are the results of complex phenomena such as the stellar magnetic field reconnection, low-level variabi…
Hot Jupiters accreting onto their parent stars: effects on the stellar activity
Salvatore Colombo, Ignazio Pillitteri, Salvatore Orlando +1
Hot Jupiters (HJs) are massive gaseous planets orbiting close to their host stars. Due to their physical characteristics and proximity to the central star, HJs are the natural labo…
Effects of Radiation in Accretion Regions of Classical T Tauri Stars: Pre-heating of accretion column in non-LTE regime
Salvatore Colombo, Laurent Ibgui, Salvatore Orlando +8
Models and observations indicate that the impact of matter accreting onto the surface of young stars produces regions at the base of accretion columns, in which optically thin and…
Non-LTE radiation hydrodynamics in PLUTO
Salvatore Colombo, Laurent Ibgui, Salvatore Orlando +5
Modeling the dynamics of most astrophysical structures requires an adequate description of the radiation-matter interaction. Several numerical (magneto)hydrodynamics codes were upg…
A new view of the corona of classical T Tauri stars: Effects of flaring activity in circumstellar disks
Salvatore Colombo, Salvatore Orlando, Giovanni Peres +5
Classical T Tauri stars (CTTSs) are young low-mass stellar objects accreting mass from their circumstellar disks. They are characterized by high levels of coronal activity as revea…
Impacts of fragmented accretion streams onto Classical T Tauri Stars: UV and X-ray emission lines
Salvatore Colombo, Salvatore Orlando, Giovanni Peres +2
Context. The accretion process in Classical T Tauri Stars (CTTSs) can be studied through the analysis of some UV and X-ray emission lines which trace hot gas flows and act as diagn…