Results 51 to 60 of about 37,453 (224)
Galactic bars and active galactic nucleus fuelling in the second half of cosmic history
Astronomy & AstrophysicsWe investigate the role of galactic bars in fuelling and triggering active galactic nuclei (AGN) in disc galaxies up to z ∼ 0.8. We utilised a deep learning model, fine-tuned on Galaxy Zoo volunteer classifications, to identify (strongly and weakly ...
La Marca A. +5 more
doaj +1 more source
Afghanite: A New Silicate‐Matrix Reference Material for In Situ Halogen and Sulfur Microanalysis
Geostandards and Geoanalytical Research, EarlyView.Key Points A new silicate matrix reference material for in situ chlorine and sulfur determination. Homogeneous across all measured elements. No matrix effects for Cl when calibrating silicate matrices, in contrast to scapolite, which causes systematic Cl overestimation of up to 13%.
Sebastian Stumpf +7 more
wiley +1 more source
AGN STORM: A Leap Forward in Reverberation Mapping
, 2016 Reverberation mapping is a tomographic technique that can be used to determine the structure and kinematics of the broad- line emitting region at the center of active galactic nuclei.
Dalla Bontà, Elena +3 more
core +1 more source
The Astrophysical JournalIn this manuscript, clues are provided to support globally negative active galactic nuclei (AGN) feedback on star formation in the host galaxies of the local low-redshift Sloan Digital Sky Survey (SDSS) Type 2 AGN, based on the different dependence of ...
XueGuang Zhang
doaj +1 more source
The impact of cosmic voids on AGN activity
Astronomy & AstrophysicsAims. Our goal is to carry out a comparative study of the properties of central galaxies hosting active galactic nuclei (AGN) in cosmic voids and their surrounding structures (i.e.
Rouse Benedict L. +3 more
doaj +1 more source
Journal of Agrarian Change, EarlyView.ABSTRACT While most frontier studies associate commodity expansions with dispossession, I argue that such expansions can also function as ‘civilizational’ projects aimed at overcoming traditional farming and creating new rural subjects better suited to the needs of capitalist development. Using a Gramscian approach to study subsumption, I analyse three
Antonio Castellanos‐Navarrete
wiley +1 more source
Active Galactic Nuclei Feedback in SDSS-IV MaNGA: AGNs Have Suppressed Central Star Formation Rates
The Astrophysical Journal, 2023 Despite the importance of feedback from active galactic nuclei (AGNs) in models of galaxy evolution, observational constraints on the influence of AGN feedback on star formation remain weak.
Caleb Lammers +6 more
doaj +1 more source
STarburst Models for AGNs [PDF]
Symposium - International Astronomical Union, 1987 A significant fraction of all spiral galaxies exhibit some type of “activity” in their nuclear regions as evidenced by the presence of emission lines in their optical spectrum (Keel, 1982; Cetty-Veron and Veron, 1985). It has become standard to classify emission-line galaxies into two main groups: “active” having Seyfert or Liner nuclei and “inactive”,
Roberto Terlevich +2 more
openaire +1 more source
Angewandte Chemie, Volume 138, Issue 38, 14 September 2026.Es wird eine Strategie zur dualen Modifikation von Peptiden auf der Festphase vorgestellt, die die S‐Alkinylierung von Peptidthiosulfonaten und eine regioselektive, iridiumkatalysierte Azid‐Thioalkin‐Zykloaddition umfasst. Dieses Verfahren ermöglicht zuverlässig den Zugang zu Peptiden mit komplexen, nicht‐kanonischen Modifikationen und ist mit ...
Marius Werner +5 more
wiley +1 more source
Obscured accretion from AGN surveys
, 2014 Recent models of super-massive black hole (SMBH) and host galaxy joint evolution predict the presence of a key phase where accretion, traced by obscured Active Galactic Nuclei (AGN) emission, is coupled with powerful star formation.
VIGNALI, CRISTIAN
core +1 more source