Constraining the driving mechanism of galaxy-scale winds with emission line spectra

Jonathan Stern, Jose Oñorbe, Alexander J. Richings, Sean D. Johnson, Claude André Faucher-Giguère

Research output: Contribution to journalConference articlepeer-review

Abstract

Using hydrodynamic simulations and photoionization calculations, we demonstrate that quasar emission line spectra contain information on the driving mechanism of galaxy-scale outflows. Outflows driven by a hot shocked bubble are expected to exhibit LINER-like optical line ratios, while outflows driven by radiation pressure are expected to exhibit Seyfert-like line ratios. Driving by radiation pressure also has a distinct signature in the narrow UV lines, which is detected in an HST-COS spectrum of a nearby quasar hosting a large-scale wind.

Original languageEnglish
Pages (from-to)45-49
Number of pages5
JournalProceedings of the International Astronomical Union
Volume19
Issue number378
DOIs
StatePublished - 2024
Event378th Symposium of the International Astronomical Union - Haifa, Israel
Duration: 12 Mar 202316 Mar 2023

Keywords

  • AGN
  • ISM: jets and outflows
  • Magneto-hydrdynamical simulations
  • outflows

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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