Search Publications
Regional unit definition for the nucleus of comet 67P/Churyumov-Gerasimenko on the SHAP7 model
Jorda, L.; Lamy, P. L.; Lara, L. M. +34 more
The previously defined regions on the nucleus of comet 67P/Churyumov-Gerasimenko have been mapped back onto the 3D SHAP7 model of the nucleus (Preusker et al., 2017). The resulting regional definition is therefore self-consistent with boundaries that are well defined in 3 dimensions. The facets belonging to each region are provided as supplementar…
Predicting the hypervelocity star population in Gaia
Rossi, E. M.; Brown, A. G. A.; Marchetti, T. +3 more
Hypervelocity stars (HVSs) are amongst the fastest objects in our Milky Way. These stars are predicted to come from the Galactic centre (GC) and travel along unbound orbits across the Galaxy. In the coming years, the ESA satellite Gaia will provide the most complete and accurate catalogue of the Milky Way, with full astrometric parameters for more…
Kelvin-Helmholtz Instability: Lessons Learned and Ways Forward
Nykyri, K.; Masson, A.
The Kelvin-Helmholtz instability (KHI) is a ubiquitous phenomenon across the Universe, observed from 500 m deep in the oceans on Earth to the Orion molecular cloud. Over the past two decades, several space missions have enabled a leap forward in our understanding of this phenomenon at the Earth's magnetopause. Key results obtained by these mission…
Infrared spectra of complex organic molecules in astronomically relevant ice matrices. I. Acetaldehyde, ethanol, and dimethyl ether
van Dishoeck, E. F.; Boogert, A. C. A.; Linnartz, H. +2 more
Context. The number of identified complex organic molecules (COMs) in inter- and circumstellar gas-phase environments is steadily increasing. Recent laboratory studies show that many such species form on icy dust grains. At present only smaller molecular species have been directly identified in space in the solid state. Accurate spectroscopic labo…
Dissection of the Collisional and Collisionless Mass Components in a Mini Sample of CLASH and HFF Massive Galaxy Clusters at z ≈ 0.4
Grillo, C.; Balestra, I.; Rosati, P. +7 more
We present a multiwavelength study of the massive ({M}200{{c}}≈ (1{--}2)× {10}15{M}⊙ ) galaxy clusters RXC J2248.7-4431, MACS J0416.1-2403, and MACS J1206.2-0847 at z ≈ 0.4. Using the X-ray surface brightness of the clusters from the deep Chandra data to model their hot gas, we are able to disentangle this mass ter…
Super star cluster feedback driving ionization, shocks and outflows in the halo of the nearby starburst ESO 338-IG04
Östlin, G.; Hayes, M.; Adamo, A. +4 more
Context. Stellar feedback strongly affects the interstellar medium (ISM) of galaxies. Stellar feedback in the first galaxies likely plays a major role in enabling the escape of LyC photons, which contribute to the re-ionization of the Universe. Nearby starburst galaxies serve as local analogues allowing for a spatially resolved assessment of the f…
Ion Velocity and Electron Temperature Inside and Around the Diamagnetic Cavity of Comet 67P
André, M.; Henri, P.; Rubin, M. +7 more
A major point of interest in cometary plasma physics has been the diamagnetic cavity, an unmagnetized region in the innermost part of the coma. Here we combine Langmuir and Mutual Impedance Probe measurements to investigate ion velocities and electron temperatures in the diamagnetic cavity of comet 67P, probed by the Rosetta spacecraft. We find io…
Growing a 'cosmic beast': observations and simulations of MACS J0717.5+3745
Kneib, J. -P.; Eckert, D.; Jullo, E. +18 more
We present a gravitational lensing and X-ray analysis of a massive galaxy cluster and its surroundings. The core of MACS J0717.5+3745 ($M(R\lt 1\, {\rm Mpc})\sim$ $2 \times 10^{15}\, \, {\rm M}_{\odot }$, $z$ = 0.54) is already known to contain four merging components. We show that this is surrounded by at least seven additional substructures with…
Radio continuum emission in the northern Galactic plane: Sources and spectral indices from the THOR survey
Menten, K. M.; Klessen, R. S.; Beuther, H. +15 more
Context Radio continuum surveys of the Galactic plane can find and characterize H II regions, supernova remnants (SNRs), planetary nebulae (PNe), and extragalactic sources. A number of surveys at high angular resolution (≤25″) at different wavelengths exist to study the interstellar medium (ISM), but no comparable high-resolution and hi…
ESA's Planetary Science Archive: Preserve and present reliable scientific data sets
De Marchi, G.; Besse, S.; Vallat, C. +15 more
The European Space Agency (ESA) Planetary Science Archive (PSA) is undergoing a significant refactoring of all its components to improve the services provided to the scientific community and the public. The PSA supports ESA's missions exploring the Solar System by archiving scientific peer-reviewed observations as well as engineering data sets. Th…