Search Publications
Reconstruction of asteroid spin states from Gaia DR3 photometry
Hanuš, J.; Ďurech, J.
Aims: Gaia Data Release 3 contains accurate photometric observations of more than 150 000 asteroids covering a time interval of 34 months. With a total of about 3 000 000 measurements, a typical number of observations per asteroid ranges from a few to several tens. We aimed to reconstruct the spin states and shapes of asteroids from this data…
Near-infrared emission line diagnostics for AGN from the local Universe to z ∼ 3
Papovich, Casey; Finkelstein, Steven L.; Buat, Véronique +35 more
Optical rest-frame spectroscopic diagnostics are usually employed to distinguish between star formation and active galactic nucleus (AGN) powered emission. However, this method is biased against dusty sources, hampering a complete census of the AGN population across cosmic epochs. To mitigate this effect, it is crucial to observe at longer wavelen…
CONCERTO: Simulating the CO, [CII], and [CI] line emission of galaxies in a 117 deg2 field and the impact of field-to-field variance
Hu, W.; Catalano, A.; Lagache, G. +29 more
In the submillimeter regime, spectral line scans and line intensity mapping (LIM) are new promising probes for the cold gas content and star formation rate of galaxies across cosmic time. However, both of these two measurements suffer from field-to-field variance. We study the effect of field-to-field variance on the predicted CO and [CII] power s…
Dissecting the interstellar medium of a z = 6.3 galaxy. X-shooter spectroscopy and HST imaging of the afterglow and environment of the Swift GRB 210905A
Covino, S.; Campana, S.; Salvaterra, R. +35 more
The study of the properties of galaxies in the first billion years after the Big Bang is one of the major topics of current astrophysics. Optical and near-infrared spectroscopy of the afterglows of long gamma-ray bursts (GRBs) provides a powerful diagnostic tool to probe the interstellar medium (ISM) of their host galaxies and foreground absorbers…
Constraints on the cosmological coupling of black holes from Gaia
El-Badry, Kareem; Andrae, René
Recent work has suggested that black holes (BHs) could be cosmologically coupled to the accelerated expansion of the Universe, potentially becoming a candidate for origin of dark energy. This would imply that BH mass growth follows cosmological expansion, with the masses of individual BHs growing as MBH ∝ (1 + z)3. In this Le…
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…