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New insights into the role of AGNs in forming the cluster red sequence
Koyama, Yusei; Kodama, Tadayuki; Shimakawa, Rhythm +7 more
As a considerable investment of time from various telescope facilities was dedicated toward studying the Spiderweb protocluster at z = 2.2, it so far remains one of the most extensively studied protocluster. We report here the latest results in this field, adding a new dimension to previous research on cluster formation at high redshift. Previous …
GA-NIFS: the interplay between merger, star formation, and chemical enrichment in MACS1149-JD1 at z = 9.11 with JWST/NIRSpec
Maiolino, R.; Perna, M.; Cresci, G. +15 more
We present JWST/NIRSpec integral-field spectroscopy observations of the z $\sim$ 9.11 lensed galaxy MACS1149-JD1, as part of the GA-NIFS programme. The data were obtained with both the G395H grating (R $\sim$ 2700) and the prism (R $\sim$ 100). This target shows a main elongated UV-bright clump and a secondary component detected in continuum emiss…
NEOMOD 2: An updated model of Near-Earth Objects from a decade of Catalina Sky Survey observations
Granvik, Mikael; Chodas, Paul W.; Nesvorný, David +9 more
Catalina Sky Survey (CSS) is a major survey of Near-Earth Objects (NEOs). In a recent work, we used CSS observations from 2005-2012 to develop a new population model of NEOs (NEOMOD). CSS's G96 telescope was upgraded in 2016 and detected over 10,000 unique NEOs since then. Here we characterize the NEO detection efficiency of G96 and use G96's NEO …
A hidden population of active galactic nuclei can explain the overabundance of luminous z > 10 objects observed by JWST
Furlanetto, Steven R.; Hegde, Sahil; Wyatt, Michael M.
The first wave of observations with JWST has revealed a striking overabundance of luminous galaxies at early times (z > 10) compared to models of galaxies calibrated to pre-JWST data. Early observations have also uncovered a large population of supermassive black holes (SMBHs) at z > 6. Because many of the high-z objects appear extended, the…
Magnetic Fields in the Central Molecular Zone Influenced by Feedback and Weakly Correlated with Star Formation
Hasegawa, Tetsuo; Gu, Qilao; Liu, Tie +12 more
Magnetic fields of molecular clouds in the central molecular zone (CMZ) have been relatively under-observed at sub-parsec resolution. Here, we report JCMT/POL2 observations of polarized dust emission in the CMZ, which reveal magnetic field structures in dense gas at ∼0.5 pc resolution. The 11 molecular clouds in our sample include two in the weste…
CHEX-MATE: Robust reconstruction of temperature profiles in galaxy clusters with XMM-Newton
Arnaud, M.; Pointecouteau, E.; Pratt, G. W. +25 more
The "Cluster HEritage project with XMM-Newton: Mass Assembly and Thermodynamics at the End point of structure formation" (CHEX-MATE) is a multi-year heritage program to obtain homogeneous XMM-Newton observations of a representative sample of 118 galaxy clusters. The observations are tuned to reconstruct the distribution of the main thermodynamic q…
TRINITY IV: predictions for supermassive black holes at z ≳ 6
Fan, Xiaohui; Aird, James; Yang, Jinyi +7 more
We present predictions for the high-redshift halo-galaxy-supermassive black hole (SMBH) connection from the TRINITY model. Matching a comprehensive compilation of galaxy (0 ≤ z ≤ 13) and SMBH data sets (0 ≤ z ≤ 6.5), TRINITY finds: (1) The number of SMBHs with M• > 109 M⊙ in the observable Universe increases by …
Complex angular structure of three elliptical galaxies from high-resolution ALMA observations of strong gravitational lenses
Vegetti, S.; McKean, J. P.; Fassnacht, C. D. +4 more
The large-scale mass distributions of galaxy-scale strong lenses have long been assumed to be well described by a singular ellipsoidal power-law density profile with external shear. However, the inflexibility of this model could lead to systematic errors in astrophysical parameters inferred with gravitational lensing observables. Here, we present …
Consistency of JWST black hole observations with NANOGrav gravitational wave measurements
Hütsi, Gert; Ellis, John; Fairbairn, Malcolm +3 more
JWST observations have opened a new chapter in supermassive black hole (SMBH) studies, stimulating discussion of two puzzles: the abundance of high-z SMBHs and the fraction of dual active galactic nuclei (AGNs). We argue that the answers to these puzzles may be linked to an interpretation of the data on the nanohertz gravitational waves (GWs) disc…
TOI-544 b: a potential water-world inside the radius valley in a two-planet system
Fridlund, M.; Pallé, E.; Barragán, O. +32 more
We report on the precise radial velocity follow-up of TOI-544 (HD 290498), a bright K star (V = 10.8), which hosts a small transiting planet recently discovered by the Transiting Exoplanet Survey Satellite (TESS). We collected 122 high-resolution High Accuracy Radial velocity Planet Searcher (HARPS) and HARPS-N spectra to spectroscopically confirm…