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Gas Kinematics in the Multiphase Circumgalactic Medium

  • Nikole M. Nielsen (a1), Glenn G. Kacprzak (a1), Christopher W. Churchill (a2), Michael T. Murphy (a1), Sowgat Muzahid (a3), Jane C. Charlton (a3) and Jessica L. Evans (a2)...

Abstract

We use high-resolution Keck, VLT, or Hubble Space Telescope spectra of background quasars to examine the kinematic properties of the multiphase, metal-enriched circumgalactic medium in the outskirts of galaxies at 0.08 < z gal < 1.0, focusing on the low-ionization Mgii and high-ionization Ovi doublets. The absorption kinematics of low-ionization gas in the circumgalactic medium depend strongly on the star formation activity and the location about the host galaxy, where the largest velocity dispersions are associated with blue, face-on galaxies probed along the minor axis. Conversely, high-ionization gas kinematics are independent of galaxy star formation activity and orientation.

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References

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Gas Kinematics in the Multiphase Circumgalactic Medium

  • Nikole M. Nielsen (a1), Glenn G. Kacprzak (a1), Christopher W. Churchill (a2), Michael T. Murphy (a1), Sowgat Muzahid (a3), Jane C. Charlton (a3) and Jessica L. Evans (a2)...

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