TY - JOUR
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
N1 - Publisher Copyright:
© 2019 The Author(s).
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 -