Search Results - "Vidotto, Aline A."
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The evolution of the solar wind
Published in Living reviews in solar physics (01-12-2021)“…How has the solar wind evolved to reach what it is today? In this review, I discuss the long-term evolution of the solar wind, including the evolution of…”
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The impact of coronal mass ejections and flares on the atmosphere of the hot Jupiter HD189733b
Published in Monthly notices of the Royal Astronomical Society (01-02-2022)“…ABSTRACT High-energy stellar irradiation can photoevaporate planetary atmospheres, which can be observed in spectroscopic transits of hydrogen lines. For the…”
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3
New Observational Constraints on the Winds of M dwarf Stars
Published in The Astrophysical journal (01-07-2021)“…Abstract High-resolution UV spectra of stellar H i Ly α lines from the Hubble Space Telescope (HST) provide observational constraints on the winds of coronal…”
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Influence of the Sun-like magnetic cycle on exoplanetary atmospheric escape
Published in Monthly notices of the Royal Astronomical Society (11-08-2020)“…ABSTRACT Stellar high-energy radiation (X-ray and extreme ultraviolet, XUV) drives atmospheric escape in close-in exoplanets. Given that stellar irradiation…”
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Do Non-dipolar Magnetic Fields Contribute to Spin-down Torques?
Published in The Astrophysical journal (01-12-2019)“…Main-sequence low-mass stars are known to spin down as a consequence of their magnetized stellar winds. However, estimating the precise rate of this spin-down…”
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Alfvén-wave-driven Magnetic Rotator Winds from Low-mass Stars. I. Rotation Dependences of Magnetic Braking and Mass-loss Rate
Published in The Astrophysical journal (01-06-2020)“…Observations of stellar rotation show that low-mass stars lose angular momentum during the main sequence. We simulate the winds of sunlike stars with a range…”
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Colorado Ultraviolet Transit Experiment Near-ultraviolet Transmission Spectroscopy of the Ultrahot Jupiter KELT-9b
Published in The Astronomical journal (01-09-2024)“…Abstract We present new near-ultraviolet (NUV, λ = 2479–3306 Å) transmission spectroscopy of KELT-9b, the hottest known exoplanet, obtained with the Colorado…”
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Multiwavelength Campaign Observations of a Young Solar-type Star, EK Draconis. I. Discovery of Prominence Eruptions Associated with Superflares
Published in The Astrophysical journal (01-01-2024)“…Abstract Young solar-type stars frequently produce superflares, serving as a unique window into the young Sun-Earth environments. Large solar flares are…”
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9
The Colorado Ultraviolet Transit Experiment Mission Overview
Published in The Astronomical journal (01-02-2023)“…Abstract Atmospheric escape is a fundamental process that affects the structure, composition, and evolution of many planets. The signatures of escape are…”
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Estimating Magnetic Filling Factors from Zeeman-Doppler Magnetograms
Published in The Astrophysical journal (10-05-2019)“…Low-mass stars are known to have magnetic fields that are believed to be of dynamo origin. Two complementary techniques are principally used to characterize…”
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Nondetections of Helium in the Young Sub-Jovian Planets K2-100b, HD 63433b, and V1298 Tau c
Published in The Astronomical journal (01-09-2024)“…Abstract We search for excess in-transit absorption of neutral helium at 1.083 μ m in the atmospheres of the young (<800 Myr) sub-Jovian (0.2–0.5 R J ) planets…”
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Constraints on Magnetic Braking from the G8 Dwarf Stars 61 UMa and τ Cet
Published in Astrophysical journal. Letters (01-05-2023)“…Abstract During the first half of their main-sequence lifetimes, stars rapidly lose angular momentum to their magnetized winds, a process known as magnetic…”
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Characterizing a World Within the Hot-Neptune Desert: Transit Observations of LTT 9779 b with the Hubble Space Telescope/WFC3
Published in The Astronomical journal (01-10-2023)“…Abstract We present an atmospheric analysis of LTT 9779 b, a rare planet situated in the hot-Neptune desert, that has been observed with Hubble Space Telescope…”
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Asteroseismology and Spectropolarimetry of the Exoplanet Host Star λ Serpentis
Published in The Astronomical journal (01-10-2023)“…Abstract The bright star λ Ser hosts a hot Neptune with a minimum mass of 13.6 M ⊕ and a 15.5 day orbit. It also appears to be a solar analog, with a mean…”
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How does the mass and activity history of the host star affect the population of low-mass planets?
Published in Monthly notices of the Royal Astronomical Society (01-06-2021)“…ABSTRACT The evolution of the atmospheres of low- and intermediate-mass planets is strongly connected to the physical properties of their host stars. The types…”
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Coupling thermal evolution of planets and hydrodynamic atmospheric escape in mesa
Published in Monthly notices of the Royal Astronomical Society (01-11-2020)“…ABSTRACT The long-term evolution of hydrogen-dominated atmospheres of sub-Neptune-like planets is mostly controlled to by two factors: a slow dissipation of…”
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Atmospheric escape in hot Jupiters under sub-Alfvénic interactions
Published in Monthly notices of the Royal Astronomical Society (01-11-2024)“…ABSTRACT Hot Jupiters might reside inside the Alfvén surface of their host star wind, where the stellar wind is dominated by magnetic energy. The implications…”
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Planetary magnetosphere evolution around post-main-sequence stars
Published in Monthly notices of the Royal Astronomical Society (01-09-2021)“…ABSTRACT Accompanying the mounting detections of planets orbiting white dwarfs and giant stars are questions about their physical history and evolution,…”
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GJ 436b and the stellar wind interaction: simulations constraints using Ly α and H α transits
Published in Monthly notices of the Royal Astronomical Society (01-03-2021)“…ABSTRACT The GJ 436 planetary system is an extraordinary system. The Neptune-sized planet that orbits the M3 dwarf revealed in the Ly α line an extended…”
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One year of AU Mic with HARPS – II. Stellar activity and star–planet interaction
Published in Monthly notices of the Royal Astronomical Society (12-04-2022)“…ABSTRACT We present a spectroscopic analysis of a 1-yr intensive monitoring campaign of the 22-Myr old planet-hosting M dwarf AU Mic using the HARPS…”
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