Search Publications
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…
An atlas of MUSE observations towards twelve massive lensing clusters
Bacon, Roland; Carton, David; Bouché, Nicolas +24 more
Context. Spectroscopic surveys of massive galaxy clusters reveal the properties of faint background galaxies thanks to the magnification provided by strong gravitational lensing.
Aims: We present a systematic analysis of integral-field-spectroscopy observations of 12 massive clusters, conducted with the Multi Unit Spectroscopic Explorer (MUSE…
LOFAR observations of galaxy clusters in HETDEX. Extraction and self-calibration of individual LOFAR targets
Di Gennaro, G.; Brunetti, G.; Rossetti, M. +20 more
Diffuse cluster radio sources, in the form of radio halos and relics, reveal the presence of cosmic rays and magnetic fields in the intracluster medium (ICM). These cosmic rays are thought to be (re)accelerated through the ICM turbulence and shock waves generated by cluster merger events. Here we characterize the presence of diffuse radio emission…
A new measurement of the Hubble constant using Type Ia supernovae calibrated with surface brightness fluctuations
Izzo, Luca; Gall, Christa; Hjorth, Jens +15 more
We present a new calibration of the peak absolute magnitude of Type Ia supernovae (SNe Ia) based on the surface brightness fluctuations (SBF) method, aimed at measuring the value of the Hubble constant. We build a sample of calibrating anchors consisting of 24 SNe hosted in galaxies that have SBF distance measurements. Applying a hierarchical Baye…
The Milky Way bar and bulge revealed by APOGEE and Gaia EDR3
Schultheis, M.; Minniti, D.; da Costa, L. N. +23 more
We investigate the inner regions of the Milky Way using data from APOGEE and Gaia EDR3. Our inner Galactic sample has more than 26 500 stars within |XGal|< 5 kpc, |YGal|< 3.5 kpc, |ZGal|< 1 kpc, and we also carry out the analysis for a foreground-cleaned subsample of 8000 stars that is more representative …
Galactic spiral structure revealed by Gaia EDR3
Marshall, D. J.; Fouesneau, M.; Andrae, R. +14 more
Using the astrometry and integrated photometry from the Gaia Early Data Release 3, we map the density variations in the distribution of young upper main sequence (UMS) stars, open clusters, and classical Cepheids in the Galactic disc within several kiloparsecs of the Sun. We derive maps of relative over- and under-dense regions for UMS stars in th…