Results 31 to 40 of about 101,045 (324)
The distribution and lifetime of powerful radio galaxies as a function of environment and redshift
Scientific Reports, 2018 Correlations between jet power and active time for z
David Garofalo +2 more
doaj +1 more source
Galaxies, 2021 Radio galaxies are known to undergo phases of activity, where the stage after the jets have switched off is referred to as the remnant phase. This state can be followed by a restarted phase when the activity reignites. Remnant and restarted radio sources
Nika Jurlin +3 more
doaj +1 more source
A CANDELS WFC3 Grism Study of Emission-Line Galaxies at z ~ 2: A Mix of Nuclear Activity and Low-Metallicity Star Formation [PDF]
, 2011 We present Hubble Space Telescope Wide Field Camera 3 (WFC3) slitless grism spectroscopy of 28 emission-line galaxies at z ~ 2, in the GOODS-S region of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey.
Atek, Hakim +2 more
core +3 more sources
Combining LOFAR and Apertif Data for Understanding the Life Cycle of Radio Galaxies
Galaxies, 2021 Active galactic nuclei (AGN) at the centres of galaxies can cycle between periods of activity and of quiescence. Characterising the duty-cycle of AGN is crucial for understanding their impact on the evolution of the host galaxy.
Raffaella Morganti +12 more
doaj +1 more source
High-Frequency and High-Resolution VLBI Observations of GHz Peaked Spectrum Objects
Galaxies, 2023 Observational studies of GHz peaked spectrum (GPS) sources contribute to the understanding of the radiative properties and interstellar environment of host galaxies.
Xiaopeng Cheng +3 more
doaj +1 more source
Quantifying correlations between galaxy emission lines and stellar continua [PDF]
, 2016 We analyse the correlations between continuum properties and emission line equivalent widths of star-forming and active galaxies from the Sloan Digital Sky Survey.
Beck, Róbert +4 more
core +3 more sources
Nuclear Activity and the Dynamics of Elliptical Galaxies
, 2004 This paper looks for any correlation between the internal dynamics of elliptical galaxies and the relatively mild nuclear activity found in many such systems.
Bender +13 more
core +2 more sources
Statistical Properties of Radio Emission from the Palomar Seyfert Galaxies [PDF]
, 2001 We have carried out an analysis of the radio and optical properties of a statistical sample of 45 Seyfert galaxies from the Palomar spectroscopic survey of nearby galaxies.
Antonucci R. R. J. +15 more
core +2 more sources
Spectral Properties of AGN with Very Weak [O III] Lines [PDF]
Serbian Astronomical Journal, 2011 The spectral properties of a sample of 58 Active GalacticNuclei (AGN) spectra, in which emission [O~III] $lambdalambda$4959, 5007 AA lines are weak or totally absent, are analyzed.
Kovacevic, J.
doaj +3 more sources
The Astrophysical Journal Letters, 2023 The Cosmic Evolution Early Release Science program observed the Extended Groth Strip (EGS) with the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST) in 2022.
Allison Kirkpatrick +35 more
doaj +1 more source