Search Results - "Guilluy, G"
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On the origin of the non-detection of metastable HeI in the upper atmosphere of the hot Jupiter WASP-80b
Published 16-03-2023“…A&A 673, A37 (2023) We aim to narrow down the origin of the non-detection of the metastable HeI triplet at about 10830 A obtained for the hot Jupiter WASP-80b…”
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The GAPS programme at TNG -- LXIII. Photo-evaporating puzzle: Exploring the enigmatic nature of TOI-5398 b atmospheric signal
Published 21-10-2024“…Atmospheric characterization is key to understanding exoplanetary systems, offering insights into the planets current and past conditions. By analyzing key…”
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The GAPS programme at TNG: TBD. Studies of atmospheric FeII winds in ultra-hot Jupiters KELT-9b and KELT-20b using HARPS-N spectrograph
Published 15-10-2024“…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…”
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DREAM: III.A helium survey in exoplanets on the edge of the hot Neptune desert with GIANO-B@TNG
Published 18-07-2023“…A&A 676, A130 (2023) The population of close-in exoplanets features a desert of hot Neptunes whose origin is uncertain. These planets may have lost their…”
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Orbital obliquity of the young planet TOI-5398 b and the evolutionary history of the system
Published 03-04-2024“…Multi-planet systems exhibit remarkable architectural diversity. However, short-period giant planets are typically isolated. Compact systems like TOI-5398,…”
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The GAPS programme at TNG LX Atmospheric characterisation of KELT-9 b via single-line analysis: Detection of six H I Balmer lines, Na I, Ca I, Ca II, Fe I, Fe II, Mg I, Ti II, Sc II, and Cr II
Published 03-09-2024“…A&A 690, A237 (2024) We analysed six primary transits of the ultra-hot Jupiter KELT-9,b obtained with the HARPS-N high-resolution spectrograph in the context…”
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The GAPS programme at TNG LXIV: An inner eccentric sub-Neptune and an outer sub-Neptune-mass candidate around BD+00 444 (TOI-2443)
Published 14-11-2024“…We examined in depth the star BD+00 444 (GJ 105.5, TOI-2443; V = 9.5 mag; d = 23.9 pc), with the aim of characterizing and confirming the planetary nature of…”
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The GAPS Programme at TNG. XXX: Characterization of the low-density gas giant HAT-P-67 b with GIARPS
Published 04-04-2024“…A&A 687, A143 (2024) HAT-P-67 b is one of the lowest-density gas giants known to date, making it an excellent target for atmospheric characterization through…”
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The GAPS Programme at TNG LV. Multiple molecular species in the atmosphere of HAT-P-11 b and review of the HAT-P-11 planetary system
Published 19-03-2024“…A&A 686, A127 (2024) The atmospheric characterisation of hot and warm Neptune-size exoplanets is challenging due to their small radius and atmospheric scale…”
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The GAPS Programme at TNG: LIV. A HeI survey of close-in giant planets hosted by M-K dwarf stars with GIANO-B
Published 01-03-2024“…Atmospheric escape plays a fundamental role in shaping the properties of exoplanets. The metastable near-infrared helium triplet at 1083.3 nm (HeI) is a…”
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The GAPS programme at TNG. XLV. HI Balmer lines transmission spectroscopy and NLTE atmospheric modelling of the ultra-hot Jupiter KELT-20b/MASCARA-2b
Published 27-06-2023“…A&A 676, A99 (2023) We aim at extracting the transmission spectrum of the HI Balmer lines of the ultra-hot Jupiter (UHJ) KELT-20b/MASCARA-2b from observations…”
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The GAPS Programme at TNG. XLI. The climate of KELT-9b revealed with a new approach to high spectral resolution phase curves
Published 23-09-2022“…A&A 668, A176 (2022) [Abridged] We present a novel method to study the thermal emission of exoplanets as a function of orbital phase at very high spectral…”
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The GAPS Programme at TNG XXXVIII. Five molecules in the atmosphere of the warm giant planet WASP-69b detected at high spectral resolution
Published 21-07-2022“…A&A 665, A104 (2022) The field of exo-atmospheric characterisation is progressing at an extraordinary pace. Atmospheric observations are now available for tens…”
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Exoplanet atmospheres with GIANO II. Detection of molecular absorption in the dayside spectrum of HD 102195b
Published 08-04-2019“…A&A 625, A107 (2019) The study of exoplanetary atmospheres is key to understand the differences between their physical, chemical and dynamical processes. Up to…”
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The GAPS Programme at TNG XXXIII. HARPS-N detects multiple atomic species in emission from the dayside of KELT-20b
Published 11-04-2022“…A&A 663, A141 (2022) The detection of lines in emission in planetary atmospheres provides direct evidence of temperature inversion. We confirm the trend of…”
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A super-massive Neptune-sized planet
Published 04-09-2023“…Nature, published online on the 30th of August 2023 and printed the 12th of October 2023 Neptune-sized planets exhibit a wide range of compositions and…”
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The GAPS Programme at TNG. XXXII. The revealing non-detection of metastable HeI in the atmosphere of the hot Jupiter WASP-80b
Published 21-12-2021“…A&A 658, A136 (2022) The hot Jupiter WASP-80b has been identified as a possible excellent target for detecting and measuring HeI absorption in the upper…”
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Exoplanet atmospheres with GIANO. I. Water in the transmission spectrum of HD 189733b
Published 28-02-2018“…A&A 615, A16 (2018) High-resolution spectroscopy (R $\ge$ 20,000) at near-infrared wavelengths can be used to investigate the composition, structure, and…”
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The GAPS programme at TNG XXII. The GIARPS view of the extended helium atmosphere of HD189733 b accounting for stellar activity
Published 12-05-2020“…A&A 639, A49 (2020) Exoplanets orbiting very close to their host star are strongly irradiated. This can lead the upper atmospheric layers to expand and…”
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