Tag: GAPS

Two hot Jupiters with a water-rich atmosphere. The study: “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” of M. Basilicata (University of Tor Vergata) appeared su A&A)

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Observations carried out with the Telescopio Nazionale Galileo of two exoplanets belonging to the hot Jupiter class reveal an atmosphere rich in water, despite the high temperatures.   Water is an essential ingredient for life as we know it—not only because we drink it, but because it is an exceptional solvent for the chemical processes that underlie life on Earth.

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A sub-neptunian “dynamically hot” orbiting around the star BD+00 444 confirmed with HARPS-N observations.

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An intriguing result, obtained thanks to the observational campaign carried out with NASA’s Kepler satellite, is that the most common transiting exoplanets are small planets with a radius smaller than 4 Earth radii and a short orbital period (less than 100 days). In particular, the most frequent planets belong to the sub-Neptune and super-Earth classes, two categories absent in the

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From Jovian to mini-Neptunian. The evolution of TOI-1430 b described in the study: “The GAPS Programme at TNG. LXV. Precise density measurement of TOI-1430 b, a young planet with an evaporating atmosphere” of D. Nardiello (UniPD, INAF-OAPD)

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Young exoplanets, that is, those orbiting stars no older than a few hundred million years, are of significant scientific interest for studying planetary formation and the processes influencing the early evolution of planets. However, the intense magnetic activity of young stars generates signals that can obscure or mimic those linked to the presence of planets, making their detection and characterization

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Sub-neptunian planets and photoevaporation for BD+40 2790. The study: “The GAPS Programme at TNG. LIX: A characterisation study of the ∼300 Myr old multi-planetary system orbiting the star BD+40 2790 (TOI-2076)” of M. Damasso (INAF – OATo) appeared on A&A

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The study of exoplanetary systems of stars with an age of a few hundred million years can teach us a great deal about the early and crucial evolutionary phases of planetary systems. Processes such as planetary migration, which causes planets to modify their distance from the central star, the circularization of orbits, and planetary photoevaporation play a fundamental role in

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Four planets (at least) for two stars. The study: “The GAPS Programme at TNG. LIII. New insights on the peculiar XO-2 system” of A. Ruggieri (Università di Padova) appeared on A&A

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Every sci-fi enthusiast, especially Star Wars fans, has wondered whether planets orbiting two stars, like Tatooine, can exist in reality. This is actually an important question in astronomy: It has been estimated that in the Milky Way, one-third of low-mass stars are in binary systems. Therefore, to fully understand the population of planets in our Galaxy, it is necessary to

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TOI-4515 b, a “warm Jupiter” with a turbulent story. The study: “The GAPS programme at TNG L. TOI-4515 b: An eccentric warm Jupiter orbiting a 1.2 Gyr-old G-star” of I. Carleo (Instituto de Astrofísica de Canarias) recently appeared on A&A

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The study of the orbital parameters of exoplanets can shed light on their past. An important quantity in this context is the eccentricity of elliptical orbits, which is the ratio between the distance of the foci over the major semiaxis. Eccentricity is equal to zero when the ellipse degenerates into a circle or equal to one when it degenerates into

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Developed a metjod aimed at characterizing spots in active stars. The paper: “The GAPS programme at TNG LII. Spot modeling of V1298 Tau using SpotCCF tool” of C. di Mario (INAF – OAPA) recently appeared on A&A

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The Sun regularly exhibits magnetic phenomena, including sunspots and solar flares, which are not only visually appealing but also crucial for in-depth study and understanding. This is because these phenomena arise from large-scale interactions between the solar magnetic field and its plasma. Moreover, they provide valuable insights into the structure of the Sun and its atmosphere.   Almost all other

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On the fequency of sub-neptunians in planetary systems with giant planets. The study: “The GAPS programme at TNG. XLVI. Deep search for low-mass planets in late-dwarf systems hosting cold Jupiters” of M. Pinamonti (INAF – OATo) appeared on A&A

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The two giant planets of the Solar System, Jupiter and Saturn, played an important role in shaping the properties and architecture of the inner solar system. This may be a quite general rule. The presence of giant planets, for instance, can be responsible for a less effective migration of solids and gas toward the inner part of planetary systems, inhibiting

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A binary system in orbital synchronization. The study: “The GAPS programme at TNG. XLIII. A massive brown dwarf orbiting the active M dwarf TOI-5375” of J. Maldonado (INAF – OAPA) appeared on A&A

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Nature sets a lower limit on stellar masses: objects less massive than 0.07-0.08 solar masses are incapable of initiating the thermonuclear reactions that power more massive stars. Below this threshold lies the realm of brown dwarfs, objects whose mass is too small to qualify as stars, yet too large to be categorized as planets.   The mechanism responsible for the

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Five molecular species found in the atmosphere of WASP-69b. The study: “The GAPS Programme at TNG. XXXVIII. Five molecules in the atmosphere of the warm giant planet WASP-69b detected at high spectral resolution” of G. Guilluy (INAF-OATo) recently appeared on A&A

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In recent years, advances in instrumentation, knowledge, and observational strategies in the field of exoplanets have allowed for the identification and confirmation of thousands of planets around other stars (exoplanets). Moreover, for the past few years, astronomers have been capable of studying the chemistry and physical properties of the atmospheres of some of these exotic worlds. These studies can also

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