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1. Nitrogen-interrupted halo -Prins/ halo -Nazarov fragment coupling cascade for the synthesis of indolines

   https://doi.org/10.1039/d3sc00986f  

   Milosavljevic, Aleksa; Holt, Connor; Frontier, Alison J. (May 2023, Chemical Science)

   The nitrogen-interrupted Nazarov cyclization can be a powerful method for the stereocontrolled synthesis of sp 3 -rich N -heterocycles. However, due to the incompatibility between the basicity of nitrogen and the acidic reaction conditions, examples of this type of Nazarov cyclization are scarce. Herein, we report a one-pot nitrogen-interrupted halo -Prins/ halo -Nazarov coupling cascade that joins two simple building blocks, an enyne and a carbonyl partner, to furnish functionalized cyclopenta[ b ]indolines with up to four contiguous stereocenters. For the first time, we provide a general method for the alkynyl halo -Prins reaction of ketones, thus enabling the formation of quaternary stereocenters. Additionally, we describe the outcomes of secondary alcohol enyne couplings, which exhibit helical chirality transfer. Furthermore, we investigate the impact of aniline enyne substituents on the reaction and evaluate the tolerance of different functional groups. Finally, we discuss the reaction mechanism and demonstrate various transformations of the prepared indoline scaffolds, highlighting their applicability in drug discovery campaigns. 

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2. A Gaia -based Catalog of Candidate Stripped Nuclei and Luminous Globular Clusters in the Halo of Centaurus A

   https://doi.org/10.3847/1538-4357/ab6f69  

   Voggel, Karina T.; Seth, Anil C.; Sand, David J.; Hughes, Allison; Strader, Jay; Crnojevic, Denija; Caldwell, Nelson (August 2020, The Astrophysical Journal)

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3. The R -Process Alliance: Discovery of a Low- α , r -process-enhanced Metal-poor Star in the Galactic Halo

   https://doi.org/10.3847/1538-4357/ab0c02  

   Sakari, Charli M.; Roederer, Ian U.; Placco, Vinicius M.; Beers, Timothy C.; Ezzeddine, Rana; Frebel, Anna; Hansen, Terese; Sneden, Christopher; Cowan, John J.; Wallerstein, George; et al (April 2019, The Astrophysical Journal)
4. Aemulus ν : precision halo mass functions in w ν CDM cosmologies

   https://doi.org/10.1088/1475-7516/2025/03/056  

   Shen, Delon; Kokron, Nickolas; DeRose, Joseph; Tinker, Jeremy; Wechsler, Risa H; Banerjee, Arka (March 2025, Journal of Cosmology and Astroparticle Physics)

   Abstract Precise and accurate predictions of the halo mass function for cluster mass scales inwνCDM cosmologies are crucial for extracting robust and unbiased cosmological information from upcoming galaxy cluster surveys.Here, we present a halo mass function emulator for cluster mass scales (≳ 10¹³M_⊙/h) up to redshiftz= 2 with comprehensive support for the parameter space ofwνCDM cosmologies allowed by current data.Based on theAemulusνsuite of simulations, the emulator marks a significant improvement in the precision of halo mass function predictions by incorporating both massive neutrinos and non-standard dark energy equation of state models.This allows for accurate modeling of the cosmology dependence in large-scale structure and galaxy cluster studies.We show that the emulator, designed using Gaussian Process Regression, has negligible theoretical uncertainties compared to dominant sources of error in future cluster abundance studies.Our emulator is publicly available (https://github.com/DelonShen/aemulusnu_hmf), providing the community with a crucial tool for upcoming cosmological surveys such as LSST and Euclid. 

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5. The R -Process Alliance: Chemodynamically Tagged Groups of Halo r -process-enhanced Stars Reveal a Shared Chemical-evolution History

   https://doi.org/10.3847/1538-4357/abd7ed  

   Gudin, Dmitrii; Shank, Derek; Beers, Timothy C.; Yuan, Zhen; Limberg, Guilherme; Roederer, Ian U.; Placco, Vinicius; Holmbeck, Erika M.; Dietz, Sarah; Rasmussen, Kaitlin C.; et al (February 2021, The Astrophysical Journal)

   null (Ed.)