116 citations · 541 across the 22 of their papers we have counts for
23 papers
Toward the Italian Astronomical Community's Contribution to HWO: Science, Technology, and Instrument Concepts
A. Fontana, F. Annibali, N. Antonietti +101
This paper summarizes the interest of the Italian astronomical community in the possible participation in the development of the Habitable Worlds Observatory (HWO). It is largely b…
Signatures of X-ray dominated chemistry in the spectra of exoplanetary atmospheres
Daniele Locci, Giambattista Aresu, Antonino Petralia +3
High-energy radiation from stars impacts planetary atmospheres deeply affecting their chemistry, providing departures from chemical equilibrium. While the upper atmospheric layers…
Classification of Chandra X-ray Sources in Cygnus OB2
Vinay L. Kashyap, Mario G. Guarcello, Nicholas J. Wright +11
We have devised a predominantly Naive Bayes method to classify the optical/IR matches to X-ray sources detected by Chandra in the Cygnus OB2 association into foreground, member, an…
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…
Hyades Member K2-136c: The Smallest Planet in an Open Cluster with a Precisely Measured Mass
Andrew W. Mayo, Courtney D. Dressing, Andrew Vanderburg +39
K2-136 is a late-K dwarf ( M) in the Hyades open cluster with three known, transiting planets and an age of Myr. Analyzing K2 photometry, we found…
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…
Kepler-102: Masses and Compositions for a Super-Earth and Sub-Neptune Orbiting an Active Star
Casey Brinkman, James Cadman, Lauren Weiss +24
Radial velocity (RV) measurements of transiting multiplanet systems allow us to understand the densities and compositions of planets unlike those in the Solar System. Kepler-102, w…
TOI-1695 b: A Water World Orbiting an Early M Dwarf in the Planet Radius Valley
Collin Cherubim, Ryan Cloutier, David Charbonneau +38
Characterizing the bulk compositions of transiting exoplanets within the M dwarf radius valley offers a unique means to establish whether the radius valley emerges from an atmosphe…
New constraints on the future evaporation of the young exoplanets in the V1298 Tau system
A. Maggio, D. Locci, I. Pillitteri +7
Transiting planets at young ages are key targets for improving our understanding of the evolution of exo-atmospheres. We present results of a new X-ray observation of V1298 Tau wit…
Extreme ultraviolet and X-ray driven photochemistry of gaseous exoplanets
Daniele Locci, Antonino Petralia, Giuseppina Micela +3
The interaction of exoplanets with their host stars causes a vast diversity in bulk and atmospheric compositions, and physical and chemical conditions. Stellar radiation, especiall…
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…
TOI-1634 b: an Ultra-Short Period Keystone Planet Sitting Inside the M Dwarf Radius Valley
R. Cloutier, D. Charbonneau, K. G. Stassun +63
Studies of close-in planets orbiting M dwarfs have suggested that the M dwarf radius valley may be well-explained by distinct formation timescales between enveloped terrestrials, a…
Identifying Exoplanets with Deep Learning. IV. Removing Stellar Activity Signals from Radial Velocity Measurements Using Neural Networks
Zoe L. de Beurs, Andrew Vanderburg, Christopher J. Shallue +24
Exoplanet detection with precise radial velocity (RV) observations is currently limited by spurious RV signals introduced by stellar activity. We show that machine learning techniq…
Detection Limits of Low-mass, Long-period Exoplanets Using Gaussian Processes Applied to HARPS-N Solar RVs
N. Langellier, T. W. Milbourne, D. F. Phillips +29
Radial velocity (RV) searches for Earth-mass exoplanets in the habitable zone around Sun-like stars are limited by the effects of stellar variability on the host star. In particula…
A pair of TESS planets spanning the radius valley around the nearby mid-M dwarf LTT 3780
Ryan Cloutier, Jason D. Eastman, Joseph E. Rodriguez +84
We present the confirmation of two new planets transiting the nearby mid-M dwarf LTT 3780 (TIC 36724087, TOI-732, , , =0.374 R, =0.401 M$_{\…
Temporal evolution and correlations of optical activity indicators measured in Sun-as-a-star observations
J. Maldonado, D. F. Phillips, X. Dumusque +29
(Abridged) We perform a detailed study of the main optical activity indicators (Ca II H & K, Balmer lines, Na I D D, and He I D) measured for the Sun…
The HADES RV Programme with HARPS-N@TNG. III. Flux-flux and activity-rotation relationships of early-M dwarfs
J. Maldonado, G. Scandariato, B. Stelzer +23
(Abridged) Understanding stellar activity in M dwarfs is crucial for the physics of stellar atmospheres as well as for ongoing radial velocity exoplanet programmes. Despite the inc…
Rotation in the Pleiades with K2: II. Multi-Period Stars
L. M. Rebull, J. R. Stauffer, J. Bouvier +15
We use K2 to continue the exploration of the distribution of rotation periods in Pleiades that we began in Paper I. We have discovered complicated multi-period behavior in Pleiades…
Effects of XUV radiation on circumbinary planets
J. Sanz-Forcada, S. Desidera, G. Micela
Several circumbinary planets have recently been discovered. The orbit of a planet around a binary stellar system poses several dynamic constraints. The effects that radiation from…
EChO Payload electronics architecture and SW design
M. Focardi, A. M. Di Giorgio, M. Farina +6
EChO is a three-modules (VNIR, SWIR, MWIR), highly integrated spectrometer, covering the wavelength range from 0.55 m, to 11.0 m. The baseline design includes the goal wavele…
The Visible and Near Infrared module of EChO
A. Adriani, G. Bellucci, L. Gambicorti +11
The Visible and Near Infrared (VNIR) is one of the modules of EChO, the Exoplanets Characterization Observatory proposed to ESA for an M-class mission. EChO is aimed to observe pla…
EChO - Exoplanet Characterisation Observatory
G. Tinetti, J. P. Beaulieu, T. Henning +131
A dedicated mission to investigate exoplanetary atmospheres represents a major milestone in our quest to understand our place in the universe by placing our Solar System in context…
Characterising the Atmospheres of Transiting Planets with a Dedicated Space Telescope
M. Tessenyi, M. Ollivier, G. Tinetti +12
Exoplanetary science is among the fastest evolving fields of today's astronomical research. Ground-based planet-hunting surveys alongside dedicated space missions (Kepler, CoRoT) a…