Search Publications
Ubiquitous radio emission in quasars: Predominant AGN origin and a connection to jets, dust, and winds
Prandoni, I.; Alexander, D. M.; Hardcastle, M. J. +16 more
We present a comprehensive study of the physical origin of radio emission in optical quasars at redshifts z < 2.5. We focus particularly on the associations between compact radio emission, dust reddening, and outflows identified in our earlier work. Leveraging the deepest low-frequency radio data available to date (LoTSS Deep DR1), we achieve r…
A portrait of the vast polar structure as a young phenomenon: Hints from its member satellites
Steinmetz, M.; Taibi, S.; Khoperskov, S. +2 more
Context. It has been observed that several Milky Way (MW) satellite dwarf galaxies are distributed along a coherent planar distribution known as the vast polar structure (VPOS).
Aims: Here we investigate whether MW satellites located on the VPOS have different physical and orbital properties from those not associated with it.
Methods: Us…
A dusty streamer infalling onto the disk of a class I protostar. ALMA dual-band constraints on grain properties and the mass-infall rate
Testi, L.; Klessen, R. S.; Manara, C. F. +15 more
Context. Observations of interstellar material infalling onto star- and planet-forming systems have become increasingly common thanks to recent advancements in radio interferometry. These structures have the potential to alter the dynamics of protoplanetary disks significantly by triggering the formation of substructures, inducing shocks, and modi…
Cosmic Vine: A z = 3.44 large-scale structure hosting massive quiescent galaxies
Brammer, Gabriel; Greve, Thomas R.; Gillman, Steven +15 more
We report the discovery of a large-scale structure at z = 3.44 revealed by JWST data in the Extended Groth Strip (EGS) field. This structure, called the Cosmic Vine, consists of 20 galaxies with spectroscopic redshifts at 3.43 < z < 3.45 and six galaxy overdensities (4 − 7σ) with consistent photometric redshifts, making up a vine-like struct…
HOLISMOKES: XI. Evaluation of supervised neural networks for strong-lens searches in ground-based imaging surveys
Suyu, S. H.; Cañameras, R.; Schuldt, S. +10 more
While supervised neural networks have become state of the art for identifying the rare strong gravitational lenses from large imaging data sets, their selection remains significantly affected by the large number and diversity of non-lens contaminants. This work evaluates and compares systematically the performance of neural networks in order to mo…
JWST Observations of Young protoStars (JOYS). Linked accretion and ejection in a Class I protobinary system
Güdel, Manuel; Le Gouellec, Valentin J. M.; Beuther, Henrik +19 more
Context. Accretion and ejection dictate the outcomes of star and planet formation processes. The mid-infrared (MIR) wavelength range offers key tracers of processes that have been difficult to detect and spatially resolve in protostars until now.
Aims: We aim to characterize the interplay between accretion and ejection in the low-mass Class I…
GATOS: missing molecular gas in the outflow of NGC 5728 revealed by JWST
Lutz, D.; Förster Schreiber, N. M.; Genzel, R. +49 more
The ionisation cones of NGC 5728 have a deficit of molecular gas based on millimetre observations of CO (2-1) emission. Although photoionisation from the active nucleus may lead to suppression of this transition, warm molecular gas can still be present. We report the detection of eight mid-infrared rotational H2 lines throughout the cen…
Rapid evolution of the recurrence time in the repeating partial tidal disruption event eRASSt J045650.3−203750
Merloni, A.; Rau, A.; Miller-Jones, J. C. A. +8 more
In this letter, we present the results from subsequent X-ray and UV observations of the nuclear transient eRASSt J045650.3−203750 (hereafter, J0456−20). We detected five repeating X-ray and UV flares from J0456−20, marking it as one of the most promising repeating partial tidal disruption event (pTDE) candidates. More importantly, we also found ra…
A "MeerKAT-meets-LOFAR" study of the complex multi-component (mini-)halo in the extreme sloshing cluster Abell 2142
Rossetti, M.; Balboni, M.; Botteon, A. +7 more
Context. Clusters of galaxies are known to be turbulent environments, whether they are merging systems where turbulence is injected via the conversion of gravitational potential energy into the intracluster medium (ICM), or whether they are relaxed systems in which small-scale core sloshing is occurring within the potential well. In many such syst…
ASTRODEEP-JWST: NIRCam-HST multi-band photometry and redshifts for half a million sources in six extragalactic deep fields
Kartaltepe, J. S.; Dickinson, M.; Ferguson, H. C. +52 more
Aims. We present a set of photometric catalogues primarily aimed at providing the community with a comprehensive database for the study of galaxy populations in the high-redshift Universe. The set gathers data from eight JWST NIRCam observational programs, targeting the Abell 2744 (GLASS-JWST, UNCOVER, DDT2756, and GO3990), EGS (CEERS), COSMOS and…