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Title: Starburst-driven Superwinds in Quasar Host Galaxies

Abstract

During the past five decades astronomers have been puzzled by the presence of strong absorption features including metal lines, observed in the optical and ultraviolet spectra of quasars, signaling inflowing and outflowing gas winds with relative velocities up to several thousands of km s{sup −1}. In particular, the location of these winds—close to the quasar, further out in its host galaxy, or in its direct environment—and the possible impact on their surroundings have been issues of intense discussion and uncertainty. Using our Herschel Space Observatory data, we report a tendency for this so-called associated metal absorption to occur along with prodigious star formation in the quasar host galaxy, indicating that the two phenomena are likely to be interrelated, that the gas winds likely occur on the kiloparsec scale and would then have a strong impact on the interstellar medium of the galaxy. This correlation moreover would imply that the unusually high cold dust luminosities in these quasars are connected with ongoing star formation. Given that we find no correlation with the AGN strength, the wind feedback that we establish in these radio-loud objects is most likely associated with their host star formation rather than with their black hole accretion.

Authors:
;  [1];  [2];  [3]
  1. Kapteyn Astronomical Institute, University of Groningen, Groningen (Netherlands)
  2. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  3. Astronomisches Institut, Ruhr Universität, Bochum (Germany)
Publication Date:
OSTI Identifier:
22654447
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 843; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABSORPTION; BLACK HOLES; CORRELATIONS; DUSTS; GALAXIES; LUMINOSITY; METALS; QUASARS; RED SHIFT; SPACE; STARS; ULTRAVIOLET RADIATION; ULTRAVIOLET SPECTRA; VELOCITY

Citation Formats

Barthel, Peter, Podigachoski, Pece, Wilkes, Belinda, and Haas, Martin, E-mail: pdb@astro.rug.nl, E-mail: podigachoski@astro.rug.nl. Starburst-driven Superwinds in Quasar Host Galaxies. United States: N. p., 2017. Web. doi:10.3847/2041-8213/AA7631.
Barthel, Peter, Podigachoski, Pece, Wilkes, Belinda, & Haas, Martin, E-mail: pdb@astro.rug.nl, E-mail: podigachoski@astro.rug.nl. Starburst-driven Superwinds in Quasar Host Galaxies. United States. doi:10.3847/2041-8213/AA7631.
Barthel, Peter, Podigachoski, Pece, Wilkes, Belinda, and Haas, Martin, E-mail: pdb@astro.rug.nl, E-mail: podigachoski@astro.rug.nl. Sat . "Starburst-driven Superwinds in Quasar Host Galaxies". United States. doi:10.3847/2041-8213/AA7631.
@article{osti_22654447,
title = {Starburst-driven Superwinds in Quasar Host Galaxies},
author = {Barthel, Peter and Podigachoski, Pece and Wilkes, Belinda and Haas, Martin, E-mail: pdb@astro.rug.nl, E-mail: podigachoski@astro.rug.nl},
abstractNote = {During the past five decades astronomers have been puzzled by the presence of strong absorption features including metal lines, observed in the optical and ultraviolet spectra of quasars, signaling inflowing and outflowing gas winds with relative velocities up to several thousands of km s{sup −1}. In particular, the location of these winds—close to the quasar, further out in its host galaxy, or in its direct environment—and the possible impact on their surroundings have been issues of intense discussion and uncertainty. Using our Herschel Space Observatory data, we report a tendency for this so-called associated metal absorption to occur along with prodigious star formation in the quasar host galaxy, indicating that the two phenomena are likely to be interrelated, that the gas winds likely occur on the kiloparsec scale and would then have a strong impact on the interstellar medium of the galaxy. This correlation moreover would imply that the unusually high cold dust luminosities in these quasars are connected with ongoing star formation. Given that we find no correlation with the AGN strength, the wind feedback that we establish in these radio-loud objects is most likely associated with their host star formation rather than with their black hole accretion.},
doi = {10.3847/2041-8213/AA7631},
journal = {Astrophysical Journal Letters},
number = 1,
volume = 843,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}