Search Publications
Phase reddening on asteroid Bennu from visible and near-infrared spectroscopy
Barucci, M. A.; Fornasier, S.; Li, J. -Y. +10 more
Context. The NASA mission OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) has been observing near-Earth asteroid (101955) Bennu in close proximity since December 2018. In October 2020, the spacecraft collected a sample of surface material from Bennu to return to Earth.
Aims: In this work,…
High-resolution, 3D radiative transfer modelling. III. The DustPedia barred galaxies
Clark, Christopher J. R.; Mosenkov, Aleksandr V.; De Looze, Ilse +17 more
Context. Dust in late-type galaxies in the local Universe is responsible for absorbing approximately one third of the energy emitted by stars. It is often assumed that dust heating is mainly attributable to the absorption of ultraviolet and optical photons emitted by the youngest (≤100 Myr) stars. Consequently, thermal re-emission by dust at far-i…
A multiplicity study of transiting exoplanet host stars. II. Revised properties of transiting planetary systems with companions
Ginski, C.; Southworth, J.; Mancini, L. +2 more
Context. Binarity is a widespread phenomenon around solar-type stars, including the host stars of transiting extrasolar planets.
Aims: We performed a detailed study of six transiting planetary systems with relatively bright stars close enough to affect observations of these systems. These contaminants were characterised in a companion work. <…
First detection of ozone in the mid-infrared at Mars: implications for methane detection
Montmessin, F.; Fedorova, A.; Korablev, O. +9 more
Aims: The ExoMars Trace Gas Orbiter was sent to Mars in March 2016 to search for trace gases diagnostic of active geological or biogenic processes.
Methods: We report the first observation of the spectral features of Martian ozone (O3) in the mid-infrared range using the Atmospheric Chemistry Suite Mid-InfaRed (MIR) channel, a…
Extended Hα over compact far-infrared continuum in dusty submillimeter galaxies. Insights into dust distributions and star-formation rates at z ∼ 2
Smail, I.; Thomson, A. P.; Dunlop, J. S. +15 more
By using data from the Atacama Large Millimeter/submillimeter Array and near-infrared (NIR) integral field spectrographs, including both Spectrograph for INtegral Field Observations in the Near Infrared and K-band Multi Object Spectrograph on the Very Large Telescope, we investigate the two-dimensional distributions of Hα and rest-frame far-infrar…
Masses for the seven planets in K2-32 and K2-233. Four diverse planets in resonant chain and the first young rocky worlds
Deleuil, M.; Adibekyan, V.; Sousa, S. G. +18 more
Context. High-precision planetary densities are key pieces of information necessary to derive robust atmospheric properties for extrasolar planets. Measuring precise masses is the most challenging part of this task, especially in multi-planetary systems. The ESO-K2 collaboration focuses on the follow-up of a selection of multi-planetary systems de…
Fragmentation of star-forming filaments in the X-shaped nebula of the California molecular cloud
André, Ph.; Men'shchikov, A.; Wang, Ke +1 more
Context. Dense molecular filaments are central to the star formation process, but the detailed manner in which they fragment into prestellar cores is not well understood yet.
Aims: Here, we investigate the fragmentation properties and dynamical state of several star-forming filaments in the X-shaped nebula region of the California molecular c…
Discovery of new stellar groups in the Orion complex. Towards a robust unsupervised approach
Alves, João; Adamo, Angela; D'Onghia, Elena +1 more
We test the ability of two unsupervised machine learning algorithms, EnLink and Shared Nearest Neighbor (SNN), to identify stellar groupings in the Orion star-forming complex as an application to the 5D astrometric data from Gaia DR2. The algorithms represent two distinct approaches to limiting user bias when selecting parameter values and evaluat…
The Fornax 3D project: Globular clusters tracing kinematics and metallicities
Viaene, S.; Hilker, M.; Pinna, F. +15 more
Globular clusters (GCs) are found ubiquitously in massive galaxies and due to their old ages, they are regarded as fossil records of galaxy evolution. Spectroscopic studies of GC systems are often limited to the outskirts of galaxies, where GCs stand out against the galaxy background and serve as bright tracers of galaxy assembly. In this work, we…
The Gaia-ESO Survey: detection and characterisation of single-line spectroscopic binaries
Gilmore, G.; Bayo, A.; Mowlavi, N. +26 more
Context. Multiple stellar systems play a fundamental role in the formation and evolution of stellar populations in galaxies. Recent and ongoing large ground-based multi-object spectroscopic surveys significantly increase the sample of spectroscopic binaries (SBs) allowing analyses of their statistical properties.
Aims: We investigate the repe…