Results 131 to 140 of about 142,027 (204)

Stellar Abundances at the Center of Early-type Galaxies with Fine Structure

open access: yesThe Astrophysical Journal
Our understanding of early-type galaxies (ETGs) has grown in the past decade with the advance of full-spectrum fitting techniques used to infer the properties of the stellar populations that make up the galaxy.
Nicholas Barth   +4 more
doaj   +1 more source

Multi‐isotope (N, O, Ti, and Cr) study of C1 and CM‐like clasts—Probing unsampled C1 material

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract A multi‐element isotope (N, O, Ti, and Cr) study was conducted on C1 and CM‐like clasts hosted in achondrites and chondrite breccias to understand the genesis of these chondritic clasts. The mineralogy, O, and N isotopes confirm that CM‐like clasts in howardites and polymict eucrites closely resemble CM chondrite‐like material.
Markus Patzek   +9 more
wiley   +1 more source

Merger Shocks Enhance Quenching in Local Galaxy Clusters

open access: yesThe Astrophysical Journal
We report evidence for enhanced quenching in low-redshift galaxy clusters hosting radio relics. This effect is strongest for low-mass galaxies and is consistent with a rapid quenching of star formation.
Ian D. Roberts
doaj   +1 more source

Functional and Pangenomic Exploration of Roc Two‐Component Regulatory Systems Identifies Novel Players Across Pseudomonas Species

open access: yesMolecular Microbiology, EarlyView.
The Roc system represents a highly interconnected but incomplete network of two‐component regulatory systems involved in the virulence of Pseudomonas aeruginosa. Our work has enabled us to identify the missing RocA3 regulator, to propose new players in the system and to delineate their conservation between clades of the species.
Victor Simon   +3 more
wiley   +1 more source

Galaxy evolution in the post-merger regime. III -- The triggering of active galactic nuclei peaks immediately after coalescence

open access: yesThe Open Journal of Astrophysics
Galaxy mergers have been shown to trigger AGN in the nearby universe, but the timescale over which this process happens remains unconstrained. The Multi-Model Merger Identifier (MUMMI) machine vision pipeline has been demonstrated to provide reliable ...
Sara Ellison   +8 more
doaj   +1 more source

‘The non‐dormant beast’: Antisemitism in communities of Russian nationalists on Vkontakte

open access: yesNations and Nationalism, EarlyView.
Abstract The article explores the specifics of Russian antisemitic discourse of recent years using the example of three nationalist communities on Vkontakte, the most popular Russian social networking site, by means of critical discourse analysis. The main strategies they employ to frame the Jews online are stereotyping Jews as ungrateful and greedy ...
Petr Oskolkov   +2 more
wiley   +1 more source

The simplicity of physical laws

open access: yesNoûs, EarlyView.
Abstract Physical laws are strikingly simple, yet there is no a priori reason for them to be so. I propose that nomic realists—Humeans and non‐Humeans—should recognize simplicity as a fundamental epistemic guide for discovering and evaluating candidate physical laws.
Eddy Keming Chen
wiley   +1 more source

An Excess of AGNs Triggered by Galaxy Mergers in MaNGA Galaxies of Stellar Mass $\sim10^{11}$ $M_{\odot}$ [PDF]

open access: yesApJ, 963, 1 (2024)
To facilitate new studies of galaxy merger driven fueling of active galactic nuclei (AGNs), we present a catalog of 387 AGNs that we have identified in the final population of over $10,000$ $z<0.15$ galaxies observed by the SDSS-IV integral field spectroscopy survey Mapping Nearby Galaxies at Apache Point Observatory (MaNGA).
arxiv  

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