Search Publications
Delta Deposits on Mars: A Global Perspective
Hauber, E.; Breuer, D.; De Toffoli, B. +1 more
Deltas have long been considered a constraining element to reconstruct the water level of an ancient ocean that may have once occupied the northern lowlands of Mars, and recently this hypothesis started to be challenged. We investigate this hypothesis and present a global inventory of fan-shaped features showing typical deltaic traits across the e…
Mesoscale and Small-Scale Structure of the Subauroral Geospace
Mishin, Evgeny; Streltsov, Anatoly
χ1 Fornacis cluster DANCe. Census of stars, structure, and kinematics of the cluster with Gaia-EDR3
Miret-Roig, N.; Bouy, H.; Sarro, L. M. +4 more
Context. The χ1 Fornacis cluster (Alessi 13) is one of a few open clusters of its age and distance in the Solar neighbourhood that ought to benefit from more attention as it can serve as a cornerstone for numerous future studies related to star and planet formation.
Aims: We take advantage of the early installment of the third data…
Molecular cloud catalogue from 13CO (1-0) data of the Forgotten Quadrant Survey
Rygl, K. L. J.; Testi, L.; Benedettini, M. +13 more
Context. New-generation spectroscopic surveys of the Milky Way plane have been revealing the structure of the interstellar medium, allowing the simultaneous study of dense structures from single star-forming objects or systems to entire spiral arms.
Aims: The good sensitivity of the new surveys and the development of dedicated algorithms now …
The kinematics of Small Magellanic Cloud star clusters
Piatti, Andrés E.
We report results of the proper motions of 25 known Small Magellanic Cloud (SMC) clusters (ages ∼ 1-10 Gyr old) derived from Gaia EDR3 data sets. When these mean proper motions were gathered with existent radial velocity measurements to compose the clusters' velocity vectors, we found the parameter values of a rotation disk that best resemble thei…
Presence of red giant population in the foreground stellar substructure of the Small Magellanic Cloud
Kartha, Sreeja S.; de Grijs, Richard; Cioni, Maria-Rosa L. +8 more
The eastern region of the Small Magellanic Cloud (SMC) is found to have a foreground stellar substructure, which is identified as a distance bimodality (~12 kpc apart) in the previous studies using red clump (RC) stars. Interestingly, studies of red giant branch (RGB) stars in the eastern SMC indicate a bimodal radial velocity (RV) distribution. I…
Exploring Mutual Information between IRIS Spectral Lines. II. Calculating the Most Probable Response in all Spectral Windows
Kleint, Lucia; Panos, Brandon
A three-dimensional picture of the solar atmosphere's thermodynamics can be obtained by jointly analyzing multiple spectral lines that span many formation heights. In Paper I, we found strong correlations between spectral shapes from a variety of different ions during solar flares in comparison to the quiet Sun. We extend these techniques to addre…
Turbulence and Complexity of Magnetospheric Plasmas
Bruno, Roberto; Consolini, Giuseppe; Mursula, Kalevi +8 more
Probing the CGM of low-redshift dwarf galaxies using FIRE simulations
Stern, Jonathan; Faucher-Giguère, Claude-André; Hafen, Zachary +7 more
Observations of ultraviolet (UV) metal absorption lines have provided insight into the structure and composition of the circumgalactic medium (CGM) around galaxies. We compare these observations with the low-redshift (z ≤ 0.3) CGM around dwarf galaxies in high-resolution cosmological zoom-in runs in the FIRE-2 (Feedback In Realistic Environments) …
The SOPHIE search for northern extrasolar planets. XVII. A wealth of new objects: Six cool Jupiters, three brown dwarfs, and 16 low-mass binary stars
Bouchy, F.; Deleuil, M.; Moutou, C. +30 more
Distinguishing classes within substellar objects and understanding their formation and evolution need larger samples of substellar companions such as exoplanets, brown dwarfs, and low-mass stars. In this paper, we look for substellar companions using radial velocity surveys of FGK stars with the SOPHIE spectrograph at the Observatoire de Haute-Pro…