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1. The Massive and Distant Clusters of WISE Survey. VII. The Environments and Properties of Radio Galaxies in Clusters at z ∼ 1

   https://doi.org/10.3847/1538-4357/ab5af0  

   Moravec, Emily ; Gonzalez, Anthony H. ; Stern, Daniel ; Clarke, Tracy ; Brodwin, Mark ; Decker, Bandon ; Eisenhardt, Peter R. ; Mo, Wenli ; Pope, Alexandra ; Stanford, Spencer A. ; et al ( January 2020 , The Astrophysical Journal)
2. The Massive and Distant Clusters of WISE Survey. V. Extended Radio Sources in Massive Galaxy Clusters at z ∼ 1

   https://doi.org/10.3847/1538-4357/aaf569  

   Moravec, Emily ; Gonzalez, Anthony H. ; Stern, Daniel ; Brodwin, Mark ; Clarke, Tracy ; Decker, Bandon ; Eisenhardt, Peter R. ; Mo, Wenli ; O’Donnell, Christine ; Pope, Alexandra ; et al ( February 2019 , The Astrophysical Journal)
3. Galaxy populations in the most distant SPT-SZ clusters: II. Galaxy structural properties in massive clusters at 1.4 ≲ z ≲ 1.7

   https://doi.org/10.1051/0004-6361/202245268  

   Strazzullo, V. ; Pannella, M. ; Mohr, J. J. ; Saro, A. ; Ashby, M. L. ; Bayliss, M. B. ; Canning, R. E. ; Floyd, B. ; Gonzalez, A. H. ; Khullar, G. ; et al ( January 2023 , Astronomy & Astrophysics)

   We investigate structural properties of massive galaxy populations in the central regions (< 0.7  r 500 ) of five very massive ( M 200  > 4 × 10 14   M ⊙ ), high-redshift (1.4 ≲  z  ≲ 1.7) galaxy clusters from the 2500 deg 2 South Pole Telescope Sunyaev Zel’dovich effect (SPT-SZ) survey. We probe the connection between galaxy structure and broad stellar population properties at stellar masses of log( M / M ⊙ ) > 10.85. We find that quiescent and star-forming cluster galaxy populations are largely dominated by bulge- and disk-dominated sources, respectively, with relative contributions being fully consistent with those of field counterparts. At the same time, the enhanced quiescent galaxy fraction observed in these clusters with respect to the coeval field is reflected in a significant morphology-density relation, with bulge-dominated galaxies already clearly dominating the massive galaxy population in these clusters at z  ∼ 1.5. At face value, these observations show no significant environmental signatures in the correlation between broad structural and stellar population properties. In particular, the Sersic index and axis ratio distribution of massive, quiescent sources are consistent with field counterparts, in spite of the enhanced quiescent galaxy fraction in clusters. This consistency suggests a tight connection between quenching and structural evolution towards a bulge-dominated morphology, at least in the probed cluster regions and galaxy stellar mass range, irrespective of environment-related processes affecting star formation in cluster galaxies. We also probe the stellar mass–size relation of cluster galaxies, and find that star-forming and quiescent sources populate the mass–size plane in a manner largely similar to their field counterparts, with no evidence of a significant size difference for any probed sub-population. In particular, both quiescent and bulge-dominated cluster galaxies have average sizes at fixed stellar mass consistent with their counterparts in the field. 

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4. Photoabsorbance of supported metal clusters: ab initio density matrix and model studies of large Ag clusters on Si surfaces

   https://doi.org/10.1039/D2CP04922H  

   Vazhappilly, Tijo ; Kilin, Dmitri S. ; Micha, David A. ( May 2023 , Physical Chemistry Chemical Physics)

   Metal clusters with 10 to 100 atoms supported by a solid surface show electronic structure typical of molecules and require ab initio treatments starting from their atomic structure, and they also can display collective electronic phenomena similar to plasmons in metal solids. We have employed ab initio electronic structure results from two different density functionals (PBE and the hybrid HSE06) and a reduced density matrix treatment of the dissipative photodynamics to calculate light absorbance by the large Ag clusters Ag N , N = 33, 37(open shell) and N = 32, 34 (closed shell), adsorbed at the Si(111) surface of a slab, and forming nanostructured surfaces. Results on light absorption are quite different for the two functionals, and are presented here for light absorbances using orbitals and energies from the hybrid functional giving correct energy band gaps. Absorption of Ag clusters on Si increases light absorbance versus photon energy by large percentages, with peak increases found in regions of photon energies corresponding to localized plasmons. The present metal clusters are large enough to allow for modelling with continuum dielectric treatments of their medium. A mesoscopic Drude–Lorentz model is presented in a version suitable for the present structures, and provides an interpretation of our results. The calculated range of plasmon energies overlaps with the range of solar photon energies, making the present structures and properties relevant to applications to solar photoabsorption and photocatalysis. 

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5. Tuning the Catalytic Activity of Pd x Ni y ( x + y = 6) Bimetallic Clusters for Hydrogen Dissociative Chemisorption and Desorption

   https://doi.org/10.1021/acsomega.9b01360  

   Ma, Shuangxiu ; Fei, Shunxin ; Huang, Liang ; Forrey, Robert C. ; Cheng, Hansong ( July 2019 , ACS Omega)