Circumgalactic medium of quasar host galaxies at 0.4<z<0.8 probed by strong Mg II absorption

Abstract

Using a sample of 166 projected quasar pairs we investigate the influence of active galactic nuclei on the circumgalactic medium (CGM) of the quasar host galaxies probed using strong Mg II absorption (i.e., $W_{2796}\ge 1\dot{A}$) at impact parameters ($D$) $<$100 kpc. The foreground quasars are restricted to the redshift range $0.4\le z\le 0.8$ and have median bolometric luminosity and stellar mass of $10^{45.1}erg{s}^{-1}$and $10^{10.89}{M}_{\odot }$ respectively. We report detections of Mg II absorption in 29 cases towards the background quasar and in 4 cases along the line of sight to the foreground quasars. We do not find any difference in the distribution of $W_{2796}$ and covering fraction ($f_c$) as a function of $D$ between quasar host galaxies and control sample of normal galaxies. These results are different from what has been reported in the literature, possibly because: (i) our sample is restricted to a narrow redshift range, (ii) comparative analysis is carried out after matching the galaxy parameters, (iii) we focus mainly on strong Mg II absorption and (iv) our sample lacks foreground quasars with high bolometric luminosity (i.e., $L_{bol}>10^{45.5}$ erg s${}^{-1}$). Future studies probing luminous foreground quasars, preferably at lower impact parameters and higher equivalent width sensitivity is needed to consolidate our findings.

Published in MNRAS

References in corpus (24)

• The Circumgalactic Medium
• The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release
• The Early Data Release of the Dark Energy Spectroscopic Instrument
• A Catalog of Quasar Properties from Sloan Digital Sky Survey Data Release 16
• Quasars Probing Quasars VII. The Pinnacle of the Cool Circumgalactic Medium Surrounds Massive z~2 Galaxies
• Inspiraling Halo Accretion Mapped in Lyman-$\alpha$ Emission around a $z\sim 3$ Quasar
• MUSE Analysis of Gas around Galaxies (MAGG) -- II: Metal-enriched halo gas around z~1 galaxies
• MUSE Analysis of Gas around Galaxies (MAGG) -- III: The gas and galaxy environment of z = 3-4.5 quasars
• Circumgalactic Mg II Emission from an Isotropic Starburst Galaxy Outflow Mapped by KCWI
• A Complete Census of Circumgalactic MgII at Redshift z<~ 0.5
• Metal-enriched halo gas across galaxy overdensities over the last 10 billion years
• The extent of the MgII absorbing circum-galactic medium of quasars
• Revealing the Impact of Quasar Luminosity on Giant Ly$\alpha$ Nebulae
• Metal line emission from galaxy haloes at z~1
• Directly tracing cool filamentary accretion over >100 kpc into the interstellar medium of a quasar host at z=1
• Host Galaxies of Ultra Strong Mg II absorbers at z $\sim$ 0.5
• Spatially resolved Lyman-$\alpha$ emission around radio bright quasars
• Nature of the Galaxies On Top Of Quasars producing MgII absorption
• The Study of Circumgalactic Medium with Quasar Pairs
• On the incidence of MgII absorbers along the blazar sightlines
• The multiphase circumgalactic medium and its relation to galaxies: an observational perspective
• Constraining the ratio of median pixel optical depth profile around z ~ 4 quasars using the longitudinal proximity effect
• Baryonic Ecosystem in Galaxies (BEINGMgII). Host Galaxies of Ultra-strong MgII Absorbers in Subaru Hyper Suprime-Cam Survey
• The Morphology and Kinematics of a Giant, Symmetric Nebula Around a Radio-Loud Quasar 3C57: Extended Rotating Gas or Biconical Outflows?

Cited by in corpus (1)

• Investigating the Circumgalactic Medium through Mg II absorption coincidence