Results 131 to 140 of about 72,254 (220)
The visible environment of gas-accreting galaxies
, 1999 We studied the environment of a sample of galaxies in which the presence of polar rings or the presence of gas- and stars- counterrotation is observed. These galaxies are believed to have accreted this material, now in peculiar motion, from their environment.
Bettoni, D., Galletta, G., Prada, F.
openaire +2 more sources
The Astrophysical JournalGas accretion from both the circumgalactic medium (CGM)/intergalactic medium (IGM) and interacting companion galaxy can dilute the gas phase metallicity of a galaxy. However, their relative contribution to the chemical evolution of galaxies remains to be
Yibo Cao, Zhizheng Pan
doaj +1 more source
Ensemble Variability Properties of Active Galactic Nuclei in the SDSS DR17
The Astrophysical JournalWe present the results from a study of ∼9600 broadline-selected active galactic nuclei (AGNs) with host galaxies detected from the Sloan Digital Sky Survey (SDSS) Data Release 17.
Krittapas Chanchaiworawit +1 more
doaj +1 more source
A Deep Chandra View of A2597: Bubbles, Shocks, Cold Fueling, and a Plasma Depletion Layer
The Astrophysical JournalTo examine how active galactic nucleus (AGN) feedback shapes the intracluster medium (ICM) and fuels black hole accretion in the cool-core galaxy cluster A2597, we present deep (∼600 ks) Chandra X-ray observations complemented by archival GMRT radio and ...
Osase Omoruyi +16 more
doaj +1 more source
The Astrophysical JournalJetted active galactic nuclei (AGN) hosting extended photoionized nebulae provide us with a unique view of the timescales associated with AGN activity. Here, we present a new green bean galaxy at z = 0.304458 ± 0.000007 with large-scale jet-induced radio
Kelly N. Sanderson +6 more
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The Mass and Redshift Dependence of Halo Star Clustering
The Astrophysical JournalWe adopt the two-point correlation function (2PCF) as a statistical tool to quantify the spatial clustering of halo stars for galaxy systems spanning a wide range in host halo virial mass ( $11.25\lt {\mathrm{log}}_{10}{M}_{200c}/{M}_{\odot }\lt 15 ...
Zhenlin Tan +7 more
doaj +1 more source
Probing the High-frequency Variability of NGC 5044: The Key to Active Galactic Nucleus Feedback
The Astrophysical JournalThe active galactic nucleus (AGN) feeding and feedback process in the centers of galaxy clusters and groups is still not well understood. NGC 5044 is the ideal system in which to study AGN feedback. It hosts the largest known reservoir of cold gas in any
Gerrit Schellenberger +12 more
doaj +1 more source
Detection Prospects of Electromagnetic Signatures from OGLE-2011-BLG-0462
The Astrophysical JournalStellar-mass isolated black holes wandering in the interstellar medium are expected to be abundant in our Galaxy. Recently, an isolated free floating black hole (IsoBH), OGLE-2011-BLG-0462, was unambiguously discovered using astrometric microlensing.
Shigeo S. Kimura +2 more
doaj +1 more source
The Astrophysical Journal Supplement SeriesGalaxy gas-phase metallicity gradients have been extensively studied over the past four decades, both in the local and in the high-redshift Universe, as they trace the baryon cycle and growth of galaxies.
Zihao Li +27 more
doaj +1 more source