Search Publications
Separation of dust emission from the cosmic infrared background in Herschel observations with wavelet phase harmonics
Miville-Deschênes, Marc-Antoine; Béthermin, Matthieu; Lagache, Guilaine +7 more
The low-brightness dust emission at high Galactic latitudes is of interest with respect to studying the interplay among the physical processes involved in shaping the structure of the interstellar medium (ISM), as well as in statistical characterizations of the dust emission as a foreground to the cosmic microwave background (CMB). Progress in thi…
TOI-4860 b, a short-period giant planet transiting an M3.5 dwarf
Bouchy, F.; Moutou, C.; Carmona, A. +47 more
We report the discovery and characterisation of a giant transiting planet orbiting a nearby M3.5V dwarf (d = 80.4pc, G = 15.1 mag, K=11.2mag, R* = 0.358 ± 0.015 R⊙, M* = 0.340 ± 0.009 M⊙). Using the photometric time series from TESS sectors 10, 36, 46, and 63 and near-infrared spectrophotometry from ExTr…
The ALPINE-ALMA [CII] survey: Dust emission effective radius up to 3 kpc in the early Universe
Cimatti, A.; Pozzi, F.; Magdis, G. E. +25 more
Aims: Measurements of the size of dust continuum emission are an important tool for constraining the spatial extent of star formation, and hence the buildup of stellar mass. Compact dust emission has generally been observed at cosmic noon (z ∼ 2 − 3). However, at earlier epochs, toward the end of the reionization (z ∼ 4 − 6), only the sizes o…
Modeling the propagation of coronal mass ejections with COCONUT: Implementation of the regularized Biot-Savart law flux rope model
Schmieder, B.; Poedts, S.; Guo, Y. +8 more
Context. Coronal mass ejections (CMEs) are rapid eruptions of magnetized plasma that occur on the Sun. They are known to be the main drivers of adverse space weather. The accurate tracking of their evolution in the heliosphere in numerical models is of the utmost importance for space weather forecasting.
Aims: The main objective of this paper…
Improving metallicity estimates for very metal-poor stars in the Gaia DR3 GSP-Spec catalog
Helmi, Amina; Matsuno, Tadafumi; Starkenburg, Else +1 more
Context. In the latest Gaia Data Release (DR3), the GSP-Spec module has provided stellar parameters and chemical abundances measured from the RVS spectra alone. However, the GSP-Spec parameters - including metallicity - for very metal-poor (VMP; [Fe/H] < −2) stars suffer from parameter degeneracy due to a lack of information in their spectra, a…
Discovery of a > 13 Mpc long X-ray filament between two galaxy clusters beyond three times their virial radii
Pacaud, F.; Reiprich, T. H.; Dolag, K. +5 more
Context. A significant fraction of the missing baryons in the local Universe is expected to reside in large-scale filaments that may be observable in soft X-ray emission. Until now, however, very few candidate emission filaments have been found in individual systems, and none beyond three times the virial radius of the clusters at the nodes of the…
The structural properties of multiple populations in globular clusters: The instructive case of NGC 3201
Vesperini, Enrico; Cadelano, Mario; Dalessandro, Emanuele
All multiple population (MP) formation models in globular clusters (GCs) predict that second population (SP) stars form more centrally concentrated than the first population (FP). As dynamical evolution proceeds, spatial differences are progressively erased and only dynamically young clusters are expected to retain a partial memory of the initial …
The MEGARA view of outflows in LINERs
Hermosa Muñoz, L.; Márquez, I.; Masegosa, J. +12 more
Context. Feedback processes, in particular those driven by outflows, are believed to play a major role in galaxy evolution. Outflows are believed to be ubiquitous in all active galactic nuclei (AGNs), although their presence in low luminosity AGNs, in particular for Low-Ionisation Nuclear Emission line Regions (LINERs), has only started to be expl…
Eclipse-timing study of new hierarchical triple star candidates in the northern continuous viewing zone of TESS
Mitnyan, T.; Pál, A.; Borkovits, T. +4 more
Aims: We compiled a list of more than 3500 eclipsing binaries located in and near the northern continuous viewing zone (NCVZ) of the TESS space telescope that have sufficient TESS photometry to search for additional hidden components in these systems. In addition to discovering their hierarchical nature, we also determined their orbital param…
The multi-spacecraft high-energy solar particle event of 28 October 2021
Vainio, R.; Rodríguez-Pacheco, J.; Wimmer-Schweingruber, R. F. +15 more
Aims: We studied the first multi-spacecraft high-energy solar energetic particle (SEP) event of solar cycle 25, which triggered a ground level enhancement on 28 October 2021, using data from multiple observers (Parker Solar Probe, STEREO-A, Solar Orbiter, GOES, SOHO, BepiColombo, and the Mars Science Laboratory) that were widely distributed t…