Published April 26, 2021 | Version v1
Poster Open

CGM and their connection with the galaxies

  • 1. Department of Physics and Astronomy, National Institute of Technology, Rourkela, India
  • 2. Inter-University Centre for Astronomy & Astrophysics
  • 3. Department of Physics and Astronomy, National Institute of Technology

Description

In this talk, I will present initial results from the C III CGM survey (CIIICs). We have obtained a sample of metal-enriched cool gas traced by C III absorption at z ∼ 0.8-0.9 using HST/COS quasar spectra. Using photoionization models, we infer the number density (nH), Cabundance([C/H]) and line-of-sight thickness (L) of these absorption systems. We systematically search SDSS DR16 catalogue for galaxies associated with these absorbers within an impact parameter of 500 kpc. We find that these metal-enriched gas absorbers reside in group environments with at least two galaxies within the impact parameter of 500 kpc. We estimate various properties (star formation rate, stellar mass, age, etc.) of these associated galaxies using photometric/spectroscopic observations. We examine the kinematics of the C III absorbers relative to the galaxy systemic velocities and also explore the connection between different galaxy properties with the derived absorber properties.

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