A. F. Lanza
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View article: The Hot-Neptune Initiative (HONEI)
The Hot-Neptune Initiative (HONEI) Open
Context . Neptune-sized exoplanets are key targets for atmospheric studies, yet their formation and evolution remain poorly understood due to their diverse characteristics and limited sample size. The so-called Neptune desert, a region of …
View article: The GAPS programme at TNG LXVIII. Characterization of the outer substellar companion around HD 72659 with a multitechnique approach
The GAPS programme at TNG LXVIII. Characterization of the outer substellar companion around HD 72659 with a multitechnique approach Open
Before discovering the first exoplanets, the radial velocity (RV) method had been used for decades to discover binary stars. Despite significant advancements in this technique, it is limited by the intrinsic mass-inclination degeneracy tha…
View article: Combining (post-)Newtonian ideas with quasi-equilibrium (QE) sequence analysis for black hole-neutron star (BHNS) gravitational wave events
Combining (post-)Newtonian ideas with quasi-equilibrium (QE) sequence analysis for black hole-neutron star (BHNS) gravitational wave events Open
In this paper we present quasi equilibrium models of black hole-neutron star (BHNS) binaries with mass and spin values compatible with parameter estimates derived from gravitational radiation events GW200105 and GW200115, events consistent…
View article: Planet-induced Modulation of Stellar Activity in an M-Dwarf: Insights into the Magnetism of a Benchmark Warm Neptune
Planet-induced Modulation of Stellar Activity in an M-Dwarf: Insights into the Magnetism of a Benchmark Warm Neptune Open
Interactions between stellar and planetary magnetic fields are expected to produce observable radio and optical signals modulated by their orbital periods, but direct detections remain elusive. Here, we analyze 17 years of spectroscopic da…
View article: Non-transiting exoplanets as a means of understanding star–planet interactions in close-in systems
Non-transiting exoplanets as a means of understanding star–planet interactions in close-in systems Open
Previous studies showed evidence of a dearth of close-in exoplanets around fast rotators, which can be explained by the combined action of intense tidal and magnetic interactions between planets and their host star. Detecting more exoplane…
View article: First detection of variable radio emission originating from the infant planetary system V1298 Tau
First detection of variable radio emission originating from the infant planetary system V1298 Tau Open
Context. V1298 Tau is a very young and magnetically active K1V star that hosts a benchmark multi-planetary system to study planet formation and evolutionary history at the earliest stages. Thanks to the high interest, it has been the targe…
View article: A super-massive Neptune-sized planet
A super-massive Neptune-sized planet Open
View article: Author Correction: A super-massive Neptune-sized planet
Author Correction: A super-massive Neptune-sized planet Open
View article: Investigating the eccentricity distribution of transiting, long-period giant planets
Investigating the eccentricity distribution of transiting, long-period giant planets Open
Eccentric giant planets are predicted to have acquired their eccentricity through two major mechanisms: the Kozai–Lidov effect or planet–planet scattering, but it is normally difficult to separate the two mechanisms and determine the true …
View article: A joint effort to discover and characterize two resonant mini-Neptunes around TOI-1803 with TESS, HARPS-N, and CHEOPS
A joint effort to discover and characterize two resonant mini-Neptunes around TOI-1803 with TESS, HARPS-N, and CHEOPS Open
Context. The discovery and characterization of mini-Neptunes hold a potentially crucial impact on planetary formation and evolution theories. Estimating their orbital parameters and atmospheric properties would provide valuable hints to im…
View article: The GAPS Programme at TNG
The GAPS Programme at TNG Open
Context. Hot Jupiters are among the most suitable targets for atmospheric studies. Expanding the number of hot gaseous giant planets with atmospheric characterisations can improve our understanding of the chemical-physical properties of th…
View article: The GAPS Programme at TNG LXVII. Detection of water and preliminary characterisation of the atmospheres of the two hot Jupiters KELT-8 b and KELT-23 Ab
The GAPS Programme at TNG LXVII. Detection of water and preliminary characterisation of the atmospheres of the two hot Jupiters KELT-8 b and KELT-23 Ab Open
Expanding the number of hot giant planets with atmospheric characterisation can improve our understanding of their atmospheres as well as their formation and evolution mechanisms. In this work, we use high-resolution spectroscopy in the ne…
View article: The GAPS programme at TNG
The GAPS programme at TNG Open
The neutral sodium resonance doublet (Na I D) has been detected in the upper atmosphere of several close-in gas giants, through high-resolution transmission spectroscopy. We aim to investigate whether its variability is linked to the plane…
View article: The GAPS Programme at TNG
The GAPS Programme at TNG Open
Context . Small-sized (<4 R ⊕ ) exoplanets in tight orbits around young stars (10–1000 Myr) give us the opportunity to investigate the mechanisms that led to their formation, the evolution of their physical and orbital properties, and, in …
View article: The GAPS programme at TNG
The GAPS programme at TNG Open
Aims . We report the confirmation of a new transiting exoplanet orbiting the star TOI-5076. Methods . We present our vetting procedure and follow-up observations which led to the confirmation of the exoplanet TOI-5076b. In particular, we e…
View article: The GAPS Programme at TNG. LXV. Precise density measurement of TOI-1430 b, a young planet with an evaporating atmosphere
The GAPS Programme at TNG. LXV. Precise density measurement of TOI-1430 b, a young planet with an evaporating atmosphere Open
Small-sized exoplanets in tight orbits around young stars (10-1000 Myr) give us the opportunity to investigate the mechanisms that led to their formation, the evolution of their physical and orbital properties and, especially, of their atm…
View article: TOI–757 b: an eccentric transiting mini–Neptune on a 17.5–d orbit
TOI–757 b: an eccentric transiting mini–Neptune on a 17.5–d orbit Open
We report the spectroscopic confirmation and fundamental properties of TOI$-$757 b, a mini$-$Neptune on a 17.5$-$d orbit transiting a bright star ($V\, =\, 9.7$ mag) discovered by the TESS mission. We acquired high$-$precision radial veloc…
View article: The GAPS programme at TNG
The GAPS programme at TNG Open
Ultra-hot Jupiters (UHJs) are gas giant planets orbiting close to their host star, with equilibrium temperatures exceeding 2000 K, and among the most studied planets in terms of their atmospheric composition. Thanks to a new generation of …
View article: The GAPS programme at TNG
The GAPS programme at TNG Open
Context. Atmospheric characterisation plays a key role in the study of exoplanetary systems, giving hints about the current and past conditions of the planets. The information retrieved from the analysis of pivotal lines such as the Hα and…
View article: The GAPS programme at TNG -- LXIII. Photo-evaporating puzzle: Exploring the enigmatic nature of TOI-5398 b atmospheric signal
The GAPS programme at TNG -- LXIII. Photo-evaporating puzzle: Exploring the enigmatic nature of TOI-5398 b atmospheric signal Open
Atmospheric characterization is key to understanding exoplanetary systems, offering insights into the planets current and past conditions. By analyzing key lines like H alpha and the He I triplet, we can trace the evolution of planets thro…
View article: The GAPS programme at TNG: TBD. Studies of atmospheric FeII winds in ultra-hot Jupiters KELT-9b and KELT-20b using HARPS-N spectrograph
The GAPS programme at TNG: TBD. Studies of atmospheric FeII winds in ultra-hot Jupiters KELT-9b and KELT-20b using HARPS-N spectrograph Open
Ultra-hot Jupiters (UHJs) are gas giant planets orbiting close to their host star, with equilibrium temperatures exceeding 2000 K, and among the most studied planets in terms of their atmospheric composition. Thanks to a new generation of …
View article: The GAPS programme at TNG
The GAPS programme at TNG Open
Aims. We analysed six primary transits of the ultra-hot Jupiter KELT-9 b obtained with the HARPS-N high-resolution spectrograph in the context of the Global Architecture of Planetary Systems (GAPS2) project, to characterise the atmosphere …
View article: The curious case of 2MASS J15594729+4403595, an ultra-fast M2 dwarf with possible Rieger cycles
The curious case of 2MASS J15594729+4403595, an ultra-fast M2 dwarf with possible Rieger cycles Open
Context. RACE-OC (Rotation and ACtivity Evolution in Open Clusters) is a project aimed at characterising the rotational and magnetic activity properties of the late-type members of open clusters, stellar associations, and moving groups of …
View article: The Large Interferometer For Exoplanets (LIFE): a space mission for mid-infrared nulling interferometry
The Large Interferometer For Exoplanets (LIFE): a space mission for mid-infrared nulling interferometry Open
© 2024 Society of Photo-Optical Instrumentation Engineers (SPIE). This is the accepted manuscript version of a conference paper which has been published in final form at https://doi.org/10.1117/12.3019090
View article: TOI–757 b: an eccentric transiting mini–Neptune on a 17.5–d orbit
TOI–757 b: an eccentric transiting mini–Neptune on a 17.5–d orbit Open
We report the spectroscopic confirmation and fundamental properties of TOI$-$757 b, a mini$-$Neptune on a 17.5$-$d orbit transiting a bright star ($V\, =\, 9.7$ mag) discovered by the TESS mission. We acquired high$-$precision radial veloc…
View article: Atmospheric heating and magnetism driven by <sup>22</sup>Ne distillation in isolated white dwarfs
Atmospheric heating and magnetism driven by <sup>22</sup>Ne distillation in isolated white dwarfs Open
The origin of atmospheric heating in the cool, magnetic white dwarf GD 356 remains unsolved nearly 40 years after its discovery. This once idiosyncratic star with T eff ≈ 7500 K, yet Balmer lines in Zeeman-split emission is now part of a g…
View article: Measuring stellar surface rotation and activity with the PLATO mission
Measuring stellar surface rotation and activity with the PLATO mission Open
The Planetary Transits and Oscillations of stars mission (PLATO) will allow us to measure surface rotation and monitor photometric activity of tens of thousands of main sequence solar-type and subgiant stars. This paper is the first of a s…
View article: Measuring stellar surface rotation and activity with the PLATO mission -- I. Strategy and application to simulated light curves
Measuring stellar surface rotation and activity with the PLATO mission -- I. Strategy and application to simulated light curves Open
The Planetary Transits and Oscillations of stars mission (PLATO) will allow us to measure surface rotation and monitor photometric activity of tens of thousands of main sequence solar-type and subgiant stars. This paper is the first of a s…
View article: The GAPS programme at TNG
The GAPS programme at TNG Open
Aims . We report the confirmation of a new transiting exoplanet orbiting the star TOI-5076. Methods . We present our vetting procedure and follow-up observations which led to the confirmation of the exoplanet TOI-5076b. In particular, we e…
View article: The GAPS programme at TNG. LVII. TOI-5076b: A warm sub-Neptune planet orbiting a thin-to-thick-disk transition star in a wide binary system
The GAPS programme at TNG. LVII. TOI-5076b: A warm sub-Neptune planet orbiting a thin-to-thick-disk transition star in a wide binary system Open
Aims. We report the confirmation of a new transiting exoplanet orbiting the star TOI-5076. Methods. We present our vetting procedure and follow-up observations which led to the confirmation of the exoplanet TOI-5076b. In particular, we emp…