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The Cosmic Ultraviolet Baryon Survey (CUBS). VII. On the Warm-hot Circumgalactic Medium Probed by O VI and Ne VIII at 0.4 ≲ z ≲ 0.7
Faucher-Giguère, Claude-André; Johnson, Sean D.; Petitjean, Patrick +12 more
This paper presents a newly established sample of 103 unique galaxies or galaxy groups at 0.4 ≲ z ≲ 0.7 from the Cosmic Ultraviolet Baryon Survey (CUBS) for studying the warm-hot circumgalactic medium (CGM) probed by both O VI and Ne VIII absorption. The galaxies and associated neighbors are identified at <1 physical Mpc from the sightlines tow…
Remarkably Compact Quiescent Candidates at 3 < z < 5 in JWST-CEERS
Bezanson, Rachel; Nelson, Erica; Suess, Katherine A. +9 more
In this Letter, we measure the rest-frame optical and near-infrared sizes of 10 quiescent candidates at 3 < z < 5, first reported by Carnall et al. We use James Webb Space Telescope Near-Infrared Camera F277W and F444W imaging obtained through the public CEERS Early Release Science program and imcascade, an astronomical fitting code that uti…
KAOSS: turbulent, but disc-like kinematics in dust-obscured star-forming galaxies at z 1.3-2.6
Scott, D.; Smail, Ian; Farrah, D. +13 more
We present spatially resolved kinematics of 27 ALMA-identified dust-obscured star-forming galaxies (DSFGs) at z ~ 1.3-2.6, as traced by Hα emission using VLT/KMOS near-infrared integral field spectroscopy from the 'KMOS-ALMA Observations of Submillimetre Sources' (KAOSS) Large Programme. We derive Hα rotation curves and velocity dispersion profile…
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…
Multimessenger search for electrophilic feebly interacting particles from supernovae
Carenza, Pierluca; Balaji, Shyam; Luque, Pedro De la Torre
We study MeV-scale electrophilic feebly interacting particles (FIPs), that may be abundantly produced in supernova explosions, escape the star and decay into electrons and positrons. This exotic injection of leptons in the Milky Way leaves an imprint in both photon and cosmic ray fluxes. Specifically, positrons lose energy and annihilate almost at…
Comparing jet-shaped point symmetry in cluster cooling flows and supernovae
Soker, Noam
I point out similarities between point-symmetric X-ray morphologies in cooling flow groups and clusters of galaxies, which are observed to be shaped by jets, and point-symmetric morphologies of eight core-collapse supernova (CCSN) remnants. I identify these similarities by qualitative eye inspection of multiwavelength images. I use these similarit…
Protoclusters as drivers of stellar mass growth in the early Universe, a case study: Taralay - a massive protocluster at z 4.57
Shen, Lu; Giavalisco, Mauro; Hathi, Nimish +26 more
Simulations predict that the galaxy populations inhabiting protoclusters may contribute considerably to the total amount of stellar mass growth of galaxies in the early universe. In this study, we test these predictions observationally, using the Taralay protocluster (formerly PCl J1001+0220) at z ~ 4.57 in the COSMOS field. With the Charting Clus…
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…
The enigmatic origin of two dormant BH binaries: Gaia BH1 and Gaia BH2
Kotko, I.; Belczynski, K.; Banerjee, S.
The two systems, namely, Gaia BH1 and Gaia BH2, that have been confirmed as dormant (i.e. no X-ray emission detected) black hole (BH) - low-mass star binaries in the latest Gaia mission data release are intriguing in the context of their formation and evolution. Both systems consist of