Search Publications
Traveling kink oscillations of coronal loops launched by a solar flare
Tian, Hui; Li, Dong; Ji, Kaifan +5 more
Context. Kink oscillations, which are often associated with magnetohydrodynamic waves, are usually identified as transverse displacement oscillations of loop-like structures. However, the traveling kink oscillation evolving to a standing wave has rarely been reported.
Aims: We investigate the traveling kink oscillation triggered by a solar fl…
Revisiting the atmosphere of the exoplanet 51 Eridani b with VLT/SPHERE
Rouan, D.; Henning, Th.; Brandner, W. +27 more
Aims: We aim to better constrain the atmospheric properties of the directly imaged exoplanet 51 Eri b using a retrieval approach with data of higher signal-to-noise ratio (S/N) than previously reported. In this context, we also compare the results from an atmospheric retrieval to using a self-consistent model to fit atmospheric parameters.
Multiple injections of energetic electrons associated with the flare and CME event on 9 October 2021
Vainio, R.; Wiegelmann, T.; Krupar, V. +12 more
Context. We study the solar energetic particle (SEP) event observed on 9 October 2021 by multiple spacecraft, including Solar Orbiter. The event was associated with an M1.6 flare, a coronal mass ejection, and a shock wave. During the event, high-energy protons and electrons were recorded by multiple instruments located within a narrow longitudinal…
Kinematic analysis of the Large Magellanic Cloud using Gaia DR3
Luri, X.; Masana, E.; Antoja, T. +6 more
Context. The high quality of the Gaia mission data has allowed for studies of the internal kinematics of the Large Magellanic Cloud (LMC) to be undertaken in unprecedented detail, providing insights into the non-axisymmetric structure of its disc. Recent works by the Gaia Collaboration have already made use of the excellent proper motions of Gaia …
Astrophysical properties of 15062 Gaia DR3 gravity-mode pulsators. Pulsation amplitudes, rotation, and spectral line broadening
De Ridder, J.; Aerts, C.; Molenberghs, G.
Context. Gravito-inertial asteroseismology came into existence thanks to high-precision CoRoT and Kepler space photometric light curves. So far, it has given rise to the internal rotation frequency of a few hundred intermediate-mass stars, yet only several tens of these have been weighed, sized, and age-dated with high precision using asteroseismi…
The data center for the Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter
Massa, Paolo; Krucker, Säm; Piana, Michele +12 more
Context. The Spectrometer and Telescope for Imaging X-rays (STIX) on board Solar Orbiter observes solar X-ray emission in the range of 4-150 keV and produces spectra and images of solar flares over a wide range of flare magnitudes. During nominal operation, STIX continuously generates data. A constant data flow requires fully automated data-proces…
Inferring the presence of very massive stars in local star-forming regions
Schaerer, D.; Martins, F.; Marques-Chaves, R. +1 more
Context. Very massive stars (VMS) have masses in excess of 100 M⊙ and are rare. However, owing to their powerful winds, very high luminosity, and efficient nucleosynthesis, they are key players of star-forming regions. In particular, their strong ionizing fluxes impact the surrounding interstellar medium.
Aims: We aim at detecting …
Delving deep: A population of extremely dusty dwarfs observed by JWST
Rodighiero, G.; Kartaltepe, J. S.; Dickinson, M. +21 more
Aims: We take advantage of the NIRCam photometric observations available as part of the Cosmic Evolution Early Release Science survey (CEERS) to identify and analyse very red sources in an effort to discover very dusty star forming galaxies.
Methods: We select red galaxies as objects with a S/N > 3 at 4.4 µm and a S/N < 2 in …
Uncovering the stellar structure of the dusty star-forming galaxy GN20 at z = 4.055 with MIRI/JWST
Ilbert, O.; Nørgaard-Nielsen, H. U.; Östlin, G. +35 more
Luminous infrared galaxies at high redshifts (z > 4) include extreme starbursts that build their stellar mass over short periods of time, that is, of 100 Myr or less. These galaxies are considered to be the progenitors of massive quiescent galaxies at intermediate redshifts (z ∼ 2) but their stellar structure and buildup is unknown. Here, we pr…
Gaia Data Release 3. Exploring and mapping the diffuse interstellar band at 862 nm
Prusti, T.; Mazeh, T.; Zucker, S. +444 more
Context. Diffuse interstellar bands (DIBs) are common interstellar absorption features in spectroscopic observations but their origins remain unclear. DIBs play an important role in the life cycle of the interstellar medium (ISM) and can also be used to trace Galactic structure.
Aims: Here, we demonstrate the capacity of the Gaia-Radial Veloc…