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The Bloated Stars Scenario proposes that AGN broad line emission originates in the winds or envelopes of bloated stars (BS). Its main advantage over BLR cloud models is the gravitational confinement of the gas and its major difficulty the…

Astrophysics · Physics 2015-06-24 Tal Alexander , Hagai Netzer

We present observational evidence supporting the presence of a stratified accretion disk wind in active galactic nuclei (AGN), based on multi-wavelength spectroscopic analysis of broad and narrow emission lines. The diversity in emission…

Astrophysics of Galaxies · Physics 2025-12-30 P. Marziani , E. Bon , S. Panda , N. Bon , A. Del Olmo , A. Deconto-Machado , K. Garnica , D. Dultzin

Fast and energetic winds are invoked by galaxy formation models as essential processes in the evolution of galaxies. These outflows can be powered either by star-formation and/or AGN activity, but the relative dominance of the two…

We present gas kinematics based on the [OIII] $\lambda$5007 line and their connection to galaxy gravitational potential, active galactic nucleus (AGN) energetics, and star formation, using a large sample of ~110,000 AGNs and star-forming…

Astrophysics of Galaxies · Physics 2017-05-03 Jong-Hak Woo , Donghoon Son , Hyun-Jin Bae

Galactic-scale winds driven by active galactic nuclei (AGN) are often invoked to suppress star formation in galaxy evolution models, but the mechanisms driving these outflows are hotly debated. Two key AGN feedback models are (1) radiation…

The spectra of active galactic nuclei usually exhibit wings in some emission lines, such as [OIII]$\lambda\lambda$5007,4959, with these wings generally being blueshifted and related to strong winds and outflows. The aim of this work was to…

Astrophysics of Galaxies · Physics 2021-02-03 Eduardo O. Schmidt , Laura D. Baravalle , Adriana R. Rodríguez-Kamenetzky

We investigate a sample of 40 local, main-sequence, edge-on disc galaxies using integral field spectroscopy with the Sydney-AAO Multi-object Integral field spectrograph (SAMI) Galaxy Survey to understand the link between properties of the…

We present 3D spectroscopic observations of a sample of 10 nearby galaxies with the AAOmega-SPIRAL integral field spectrograph on the 3.9m AAT, the largest survey of its kind to date. The double-beam spectrograph provides spatial maps in a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 R. G. Sharp , J. Bland-Hawthorn

We analyze ionized gas emission lines in deep rest-frame optical spectra of 16 quiescent galaxies at redshift $1.7<z<3.5$ observed with JWST/NIRSpec by the Blue Jay survey. Robust detection of emission lines in $75\%$ of the sample…

We present a sample of 22 massive galaxies with stellar masses $>10^{10} M_{\odot}$ at $3<z<4$ with deep H and K-band high resolution spectra (R=3500-3000) from Keck/MOSFIRE and VLT/KMOS near-infrared spectrographs. We find a large fraction…

Astrophysics of Galaxies · Physics 2024-05-24 M. Martínez-Marín , K. Glazebrook , T. Nanayakkara , C. Jacobs , I. Labbé , G. G. Kacprzak , C. Papovich , C. Schreiber

Spatially resolved spectroscopy from SDSS-IV MaNGA survey has revealed a class of quiescent, relatively common early-type galaxies, termed "red geysers", that possibly host large scale active galactic nuclei driven winds. Given their…

We present Keck/OSIRIS laser guide-star assisted adaptive optics (LGSAO) integral field spectroscopy of [O III] 5007 Angstrom nebular emission from twelve galaxies hosting optically faint (R = 20 - 25; nuLnu ~ 10^44 -10^46 erg/s) active…

Astrophysics of Galaxies · Physics 2018-11-14 David R. Law , Charles C. Steidel , Yuguang Chen , Allison L. Strom , Gwen C. Rudie , Ryan F. Trainor

The environment of high-redshift galaxies is characterized by both wind-driven outflowing gas and gravitationally infalling streams. To investigate such galaxy-IGM interplay we have generated synthetic optical absorption line spectra…

Astrophysics · Physics 2019-08-19 A. P. M. Fangano , A. Ferrara , P. Richter

Feedback from accreting SMBHs is often identified as the main mechanism responsible for regulating star-formation in AGN host galaxies. However, the relationships between AGN activity, radiation, winds, and star-formation are complex and…

The aim of this paper is to revisit critically the current census of AGN as derived from optical spectroscopy. We considered the spectra of nearby (z<0.1) galaxies from the Sloan Digital Sky Survey (SDSS). The equivalent width (EW)…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Alessandro Capetti

We selected 27244 nearby, red, giant early-type galaxies (RGEs) from the Sloan Digital Sky Survey (SDSS). In a large fraction (53%) of their spectra the [O III] emission line is detected, with an equivalent width (EW) distribution strongly…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Alessandro Capetti , Ranieri D. Baldi

We have performed an extensive hydrodynamical parameter study of starburst-driven galactic winds, motivated by the latest observation data on the best-studied starburst galaxy M82. We study how the wind dynamics, morphology and X-ray…

Astrophysics · Physics 2009-10-31 D. K. Strickland , I. R. Stevens

Galactic winds are associated with intense star formation and AGNs. Depending on their formation mechanism and velocity they may remove a significant fraction of gas from their host galaxies, thus suppressing star formation, enriching the…

Astrophysics of Galaxies · Physics 2020-11-04 Edmund Hodges-Kluck , Mihoko Yukita , Ryan Tanner , Andrew Ptak , Joel N. Bregman , Jiang-tao Li

We investigate the properties of the galaxies that reionized the Universe and the history of cosmic reionization using the "Evolution and Assembly of GaLaxies and their environments" (EAGLE) cosmological hydrodynamical simulations. We…

Cosmology and Nongalactic Astrophysics · Physics 2017-04-19 Mahavir Sharma , Tom Theuns , Carlos Frenk , Richard G. Bower , Robert A. Crain , Matthieu Schaller , Joop Schaye

The impact of winds and jet-inflated bubbles driven by active galactic nuclei (AGN) are believed to significantly affect the host galaxy's interstellar medium (ISM) and regulate star formation. To explore this scenario, we perform a suite…