Search Publications
The Impact of Stellar Clustering on the Observed Multiplicity and Orbital Periods of Planetary Systems
Kruijssen, J. M. Diederik; Longmore, Steven N.; Chevance, Mélanie
It has recently been shown that stellar clustering plays an important role in shaping the properties of planetary systems. We investigate how the multiplicity distributions and orbital periods of planetary systems depend on the 6D phase space density of stars surrounding planet host systems. We find that stars in high stellar phase space density e…
Physical and chemical structure of the Serpens filament: Fast formation and gravity-driven accretion
Menten, K. M.; Belloche, A.; Henkel, C. +5 more
Context. The Serpens filament, a prominent elongated structure in a relatively nearby molecular cloud, is believed to be at an early evolutionary stage, so studying its physical and chemical properties can shed light on filament formation and early evolution.
Aims: The main goal is to address the physical and chemical properties as well as th…
Predicting the Magnetic Fields of a Stealth CME Detected by Parker Solar Probe at 0.5 au
Al-Haddad, Nada; Lynch, Benjamin J.; Palmerio, Erika +5 more
Stealth coronal mass ejections (CMEs) are eruptions from the Sun that are not associated with appreciable low-coronal signatures. Because they often cannot be linked to a well-defined source region on the Sun, analysis of their initial magnetic configuration and eruption dynamics is particularly problematic. In this article, we address this issue …
ExoMars TGO/NOMAD-UVIS Vertical Profiles of Ozone: 1. Seasonal Variation and Comparison to Water
Aoki, S.; Vandaele, A. C.; Daerden, F. +23 more
We present ∼1.5 Mars Years (MY) of ozone vertical profiles, covering LS = 163° in MY34 to LS = 320° in MY35, a period which includes the 2018 global dust storm. Since April 2018, the Ultraviolet and Visible Spectrometer channel of the Nadir and Occultation for Mars Discovery (NOMAD) instrument aboard the ExoMars Trace Gas Orb…
3D core kinematics of NGC 6362: central rotation in a dynamically evolved globular cluster
Vesperini, Enrico; Dalessandro, Emanuele; Kamann, Sebastian +4 more
We present a detailed 3D kinematic analysis of the central regions (R < 30 arcsec) of the low mass and dynamically evolved galactic globular cluster (GC) NGC 6362. The study is based on data obtained with ESO-VLT/MUSE used in combination with the adaptive optics module and providing ~3000 line-of-sight radial velocities, which have been complem…
Evolution of Interplanetary Coronal Mass Ejection Complexity: A Numerical Study through a Swarm of Simulated Spacecraft
Poedts, Stefaan; Lugaz, Noé; Scolini, Camilla +1 more
In-situ measurements carried out by spacecraft in radial alignment are critical to advance our knowledge on the evolutionary behavior of coronal mass ejections (CMEs) and their magnetic structures during propagation through interplanetary space. Yet, the scarcity of radially aligned CME crossings restricts investigations on the evolution of CME ma…
Discovery of Four New Clusters in the Cygnus Cloud
Chen, Li; Zhong, Jing; Li, Jing +1 more
We report the discovery of four new open clusters (named QC 1, QC 2, QC 3 and QC 4) in the direction of Cygnus Cloud and select their members based on five astrometric parameters (l, b, ϖ, ${\mu }_{\alpha }^{* }$ , µδ) of Gaia DR2. We also derive their astrophysical parameters for each new cluster. Structure parameters are generat…
3He-rich solar energetic particle events observed on the first perihelion pass of Solar Orbiter
Lario, D.; Rodríguez-Pacheco, J.; Wimmer-Schweingruber, R. F. +19 more
We report observations of five impulsive solar energetic particle (SEP) events observed inside 1 au during the first perihelion pass of the Solar Orbiter mission, which was launched in February 2020. These small events were all reasonably associated with active regions observed from Earth but which had rotated out of view by the time of the Solar …
Rise of the Titans: Gas Excitation and Feedback in a Binary Hyperluminous Dusty Starburst Galaxy at z ∼ 6
Burgarella, Denis; Clements, David L.; Oliver, Seb +8 more
We report new observations toward the hyperluminous dusty starbursting major merger ADFS-27 (z = 5.655), using the Australia Telescope Compact Array (ATCA) and the Atacama Large Millimeter/submillimeter Array (ALMA). We detect CO (J = 2 → 1), CO (J = 8 → 7), CO (J = 9 → 8), CO (J = 10 → 9), and H2O (312 → 221) emis…
D/H in the refractory organics of comet 67P/Churyumov-Gerasimenko measured by Rosetta/COSIMA
Hilchenbach, M.; Merouane, S.; Engrand, C. +11 more
The D/H ratio is a clue to the origin and evolution of hydrogen-bearing chemical species in Solar system materials. D/H has been observed in the coma of many comets, but most such measurements have been for gaseous water. We present the first in situ measurements of the D/H ratios in the organic refractory component of cometary dust particles coll…