C IV absorbers tracing cool gas in dense galaxy group/cluster environments

Aditya Manuwal; Anand Narayanan; Sowgat Muzahid; Jane C. Charlton; Vikram Khaire; Hum Chand

doi:10.1093/mnras/stz195

C IV absorbers tracing cool gas in dense galaxy group/cluster environments

Aditya Manuwal
, Anand Narayanan
, Sowgat Muzahid
, Jane C. Charlton
, Vikram Khaire
, Hum Chand

Astronomy & Astrophysics

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

We present analysis on three intervening H i-C iv absorption systems tracing gas within galaxy group/cluster environments, identified in the HST/COS far-UV spectra of the background quasars PG 1148 + 549 (z_abs = 0.003 46), SBS 1122 + 594 (z_abs = 0.004 02), and RXJ 1230.8 + 0115 (z_abs = 0.005 74). The ionization models are consistent with the origin of metal lines and H i from a cool and diffuse photoionized gas phase with T ≲ 4 × 10⁴ K and n_H ≲ 5 × 10^-4 cm^-3. The three absorbers have 89, 51, and 17 galaxies detected within 1 Mpc and |Δv| < 600 km s^-1. The RXJ 1230.8 + 0115 sightline traces the outskirt regions of the Virgo cluster where the absorber is found to have supersolar metallicity. The detection of metal lines along with H i has enabled us to confirm the presence of cool, diffuse gas possibly enriched by outflows, and tidal interactions in environments with significant galaxy density.

Original language	English (US)
Pages (from-to)	30-46
Number of pages	17
Journal	Monthly Notices of the Royal Astronomical Society
Volume	485
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stz195
State	Published - May 1 2019

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/stz195

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title = "C IV absorbers tracing cool gas in dense galaxy group/cluster environments",

abstract = "We present analysis on three intervening H i-C iv absorption systems tracing gas within galaxy group/cluster environments, identified in the HST/COS far-UV spectra of the background quasars PG 1148 + 549 (zabs = 0.003 46), SBS 1122 + 594 (zabs = 0.004 02), and RXJ 1230.8 + 0115 (zabs = 0.005 74). The ionization models are consistent with the origin of metal lines and H i from a cool and diffuse photoionized gas phase with T ≲ 4 × 104 K and nH ≲ 5 × 10-4 cm-3. The three absorbers have 89, 51, and 17 galaxies detected within 1 Mpc and |Δv| < 600 km s-1. The RXJ 1230.8 + 0115 sightline traces the outskirt regions of the Virgo cluster where the absorber is found to have supersolar metallicity. The detection of metal lines along with H i has enabled us to confirm the presence of cool, diffuse gas possibly enriched by outflows, and tidal interactions in environments with significant galaxy density.",

author = "Aditya Manuwal and Anand Narayanan and Sowgat Muzahid and Charlton, \{Jane C.\} and Vikram Khaire and Hum Chand",

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doi = "10.1093/mnras/stz195",

language = "English (US)",

volume = "485",

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T1 - C IV absorbers tracing cool gas in dense galaxy group/cluster environments

AU - Manuwal, Aditya

AU - Narayanan, Anand

AU - Muzahid, Sowgat

AU - Charlton, Jane C.

AU - Khaire, Vikram

AU - Chand, Hum

PY - 2019/5/1

Y1 - 2019/5/1

N2 - We present analysis on three intervening H i-C iv absorption systems tracing gas within galaxy group/cluster environments, identified in the HST/COS far-UV spectra of the background quasars PG 1148 + 549 (zabs = 0.003 46), SBS 1122 + 594 (zabs = 0.004 02), and RXJ 1230.8 + 0115 (zabs = 0.005 74). The ionization models are consistent with the origin of metal lines and H i from a cool and diffuse photoionized gas phase with T ≲ 4 × 104 K and nH ≲ 5 × 10-4 cm-3. The three absorbers have 89, 51, and 17 galaxies detected within 1 Mpc and |Δv| < 600 km s-1. The RXJ 1230.8 + 0115 sightline traces the outskirt regions of the Virgo cluster where the absorber is found to have supersolar metallicity. The detection of metal lines along with H i has enabled us to confirm the presence of cool, diffuse gas possibly enriched by outflows, and tidal interactions in environments with significant galaxy density.

AB - We present analysis on three intervening H i-C iv absorption systems tracing gas within galaxy group/cluster environments, identified in the HST/COS far-UV spectra of the background quasars PG 1148 + 549 (zabs = 0.003 46), SBS 1122 + 594 (zabs = 0.004 02), and RXJ 1230.8 + 0115 (zabs = 0.005 74). The ionization models are consistent with the origin of metal lines and H i from a cool and diffuse photoionized gas phase with T ≲ 4 × 104 K and nH ≲ 5 × 10-4 cm-3. The three absorbers have 89, 51, and 17 galaxies detected within 1 Mpc and |Δv| < 600 km s-1. The RXJ 1230.8 + 0115 sightline traces the outskirt regions of the Virgo cluster where the absorber is found to have supersolar metallicity. The detection of metal lines along with H i has enabled us to confirm the presence of cool, diffuse gas possibly enriched by outflows, and tidal interactions in environments with significant galaxy density.

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U2 - 10.1093/mnras/stz195

DO - 10.1093/mnras/stz195

M3 - Article

AN - SCOPUS:85073171058

SN - 0035-8711

VL - 485

SP - 30

EP - 46

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

C IV absorbers tracing cool gas in dense galaxy group/cluster environments

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