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Gaia Early Data Release 3. Catalogue validation
Jordi, C.; Luri, X.; Cantat-Gaudin, T. +33 more
Context. The third Gaia data release is published in two stages. The early part, Gaia EDR3, gives very precise astrometric and photometric properties for nearly two billion sources together with seven million radial velocities from Gaia DR2. The full release, Gaia DR3, will add radial velocities, spectra, light curves, and astrophysical parameters…
Gaia Early Data Release 3. The Gaia Catalogue of Nearby Stars
Prusti, T.; Mazeh, T.; Zucker, S. +420 more
Aims: We produce a clean and well-characterised catalogue of objects within 100 pc of the Sun from the Gaia Early Data Release 3. We characterise the catalogue through comparisons to the full data release, external catalogues, and simulations. We carry out a first analysis of the science that is possible with this sample to demonstrate its po…
The SPHERE infrared survey for exoplanets (SHINE). III. The demographics of young giant exoplanets below 300 au with SPHERE
Moutou, C.; Fantinel, D.; Dominik, C. +108 more
The SpHere INfrared Exoplanet (SHINE) project is a 500-star survey performed with SPHERE on the Very Large Telescope for the purpose of directly detecting new substellar companions and understanding their formation and early evolution. Here we present an initial statistical analysis for a subsample of 150 stars spanning spectral types from B to M …
Age dissection of the Milky Way discs: Red giants in the Kepler field
Khan, S.; Valentini, M.; Chiappini, C. +16 more
Ensemble studies of red-giant stars with exquisite asteroseismic (Kepler), spectroscopic (APOGEE), and astrometric (Gaia) constraints offer a novel opportunity to recast and address long-standing questions concerning the evolution of stars and of the Galaxy. Here, we infer masses and ages for nearly 5400 giants with available Kepler light curves a…
KiDS-1000 catalogue: Weak gravitational lensing shear measurements
Hoekstra, Henk; Heymans, Catherine; Kuijken, Konrad +20 more
We present weak lensing shear catalogues from the fourth data release of the Kilo-Degree Survey, KiDS-1000, spanning 1006 square degrees of deep and high-resolution imaging. Our `gold-sample' of galaxies, with well-calibrated photometric redshift distributions, consists of 21 million galaxies with an effective number density of 6.17 galaxies per s…
Six transiting planets and a chain of Laplace resonances in TOI-178
Alonso, R.; Bouchy, F.; Deleuil, M. +152 more
Determining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the fragility of their orbital configuration ensures that no significant scattering or collisional event has taken place since the earliest formation phase when the parent …
Water in star-forming regions: physics and chemistry from clouds to disks as probed by Herschel spectroscopy
de Graauw, Th.; Liseau, R.; Braine, J. +50 more
Context. Water is a key molecule in the physics and chemistry of star and planet formation, but it is difficult to observe from Earth. The Herschel Space Observatory provided unprecedented sensitivity as well as spatial and spectral resolution to study water. The Water In Star-forming regions with Herschel (WISH) key program was designed to observ…
Atmospheric Rossiter-McLaughlin effect and transmission spectroscopy of WASP-121b with ESPRESSO
Bouchy, F.; Rebolo, R.; Pallé, E. +41 more
Context. Ultra-hot Jupiters are excellent laboratories for the study of exoplanetary atmospheres. WASP-121b is one of the most studied; many recent analyses of its atmosphere report interesting features at different wavelength ranges.
Aims: In this paper we analyze one transit of WASP-121b acquired with the high-resolution spectrograph ESPRES…
Extreme-UV quiet Sun brightenings observed by the Solar Orbiter/EUI
Haberreiter, M.; Mierla, M.; Zhukov, A. N. +25 more
Context. The heating of the solar corona by small heating events requires an increasing number of such events at progressively smaller scales, with the bulk of the heating occurring at scales that are currently unresolved.
Aims: The goal of this work is to study the smallest brightening events observed in the extreme-UV quiet Sun.
Method…
Gaia Early Data Release 3. Structure and properties of the Magellanic Clouds
Prusti, T.; Mazeh, T.; Zucker, S. +417 more
Context. This work is part of the Gaia Data Processing and Analysis Consortium papers published with the Gaia Early Data Release 3 (EDR3). It is one of the demonstration papers aiming to highlight the improvements and quality of the newly published data by applying them to a scientific case.
Aims: We use the Gaia EDR3 data to study the struct…