Search Publications
MINDS: The influence of outer dust disc structure on the volatile delivery to the inner disc
Henning, Thomas; Güdel, Manuel; Tabone, Benoît +18 more
Context. The Atacama Large Millimeter/submillimeter Array (ALMA) has revealed that the millimetre dust structures of protoplanetary discs are extremely diverse, ranging from small and compact dust discs to large discs with multiple rings and gaps. It has been proposed that the strength of H2O emission in the inner disc particularly depe…
The Gaia-ESO survey: New spectroscopic binaries in the Milky Way
Jorissen, A.; Zwitter, T.; Vallenari, A. +14 more
Context. The Gaia-ESO survey (GES) is a large public spectroscopic survey that acquired spectra for more than 100 000 stars across all major components of the Milky Way. In addition to atmospheric parameters and stellar abundances that have been derived in previous papers of this series, the GES spectra allow us to detect spectroscopic binaries wi…
Ammonium hydrosulfide (NH4SH) as a potentially significant sulfur sink in interstellar ices
van Dishoeck, E. F.; Slavicinska, K.; Kavanagh, P. J. +7 more
Context. Sulfur is depleted with respect to its cosmic standard abundance in dense star-forming regions. It has been suggested that this depletion is caused by the freeze-out of sulfur on interstellar dust grains, but the observed abundances and upper limits of sulfur-bearing ices remain too low to account for all of the missing sulfur. Toward the…
Connection between planetary He I λ10 830 Å absorption and extreme-ultraviolet emission of planet-host stars
Sánchez-López, A.; López-Puertas, M.; Amado, P. J. +13 more
Context. The detection of the He I λ10 830 Å triplet in exoplanet atmospheres has opened a new window for probing planetary properties, including atmospheric escape. Unlike Lyman α, the triplet is significantly less affected by interstellar medium (ISM) absorption. Sufficient X-ray and extreme ultraviolet (XUV) stellar irradiation may trigger the …
Spatially coherent 3D distributions of HI and CO in the Milky Way
Edenhofer, Gordian; Mertsch, Philipp; Söding, Laurin +6 more
Context. The spatial distribution of the gaseous components of the Milky Way is of great importance for a number of different fields, for example, Galactic structure, star formation, and cosmic rays. However, obtaining distance information to gaseous clouds in the interstellar medium from Doppler-shifted line emission is notoriously difficult give…
Ice inventory towards the protostar Ced 110 IRS4 observed with the James Webb Space Telescope: Results from the Early Release Science Ice Age program
Sun, F.; Egami, E.; van Dishoeck, E. F. +37 more
Context. Protostars contain icy ingredients necessary for the formation of potential habitable worlds, therefore, it is crucial to understand their chemical and physical environments. This work is focused on the ice features towards the binary protostellar system Ced 110 IRS4A and IRS4B, separated by 250 au and observed with James Webb Space Teles…
Euclid: A complete Einstein ring in NGC 6505
Altieri, B.; Aussel, H.; Cimatti, A. +195 more
We report the discovery of a complete Einstein ring around the elliptical galaxy NGC 6505, at z = 0.042. This is the first strong gravitational lens discovered in Euclid and the first in an NGC object from any survey. The combination of the low redshift of the lens galaxy, the brightness of the source galaxy (IE = 18.1 lensed, IE
The magnetic field of the Radcliffe wave: Starlight polarization at the nearest approach to the Sun
Alves, J.; Panopoulou, G. V.; Soler, J. D. +6 more
Aims. We investigate the geometry of the magnetic field toward the Radcliffe wave, a coherent part of the nearby Local Arm of 3 kpc in length recently discovered via three-dimensional dust mapping. Methods. We used archival stellar polarization in the optical and new measurements in the near-infrared to trace the magnetic field as projected on the…
Chemical Evolution of R-process Elements in Stars (CERES): IV. An observational run-up of the third r-process peak with Hf, Os, Ir, and Pt
Hansen, Camilla Juul; Bonifacio, Piercarlo; Caffau, Elisabetta +8 more
Context. The third r-process peak (Os, Ir, Pt) is poorly understood due to observational challenges, with spectral lines located in the blue or near-ultraviolet region of stellar spectra. These challenges need to be overcome for a better understanding of the r-process in a broader context. Aims. To understand how the abundances of the third r-proc…
Deep view of the intracluster light in the Coma cluster of galaxies
Jiménez-Teja, Yolanda; Dupke, Renato A.; Román, Javier +6 more
The detection and study of the intracluster light (ICL) in rich clusters of galaxies has been a longstanding challenge and key focus. Using the lowest-surface-brightness images of the Coma cluster of galaxies in the g and r bands, from the Halos and Environment of Nearby Galaxies (HERON) Coma Cluster Project, we obtained the most extensive image o…