# Metal enrichment in the circumgalactic medium and Ly{\alpha} haloes around quasars at z $\sim$3

@article{Guo2020MetalEI,
title={Metal enrichment in the circumgalactic medium and Ly\{\alpha\} haloes around quasars at z \$\sim\$3},
author={Y. Guo and R. Maiolino and Linhua Jiang and K. Matsuoka and T. Nagao and O. Dors and M. Ginolfi and Nick Henden and J. Bennett and D. Sijacki and E. Puchwein},
journal={arXiv: Astrophysics of Galaxies},
year={2020}
}
• Y. Guo, +8 authors E. Puchwein
• Published 2020
• Physics
• arXiv: Astrophysics of Galaxies
• Deep observations have detected extended Ly{\alpha} emission nebulae surrounding tens of QSOs at redshift 2 to 6. However, the metallicity of such extended haloes is still poorly understood. We perform a detailed analysis on a large sample of 80 quasars at z$\sim$3 based on MUSE-VLT data. We find clear evidence of extended emission of the UV nebular lines C IV {\lambda}1549 and He II {\lambda}1640 for about 18$\%$ of the sample, while C III] {\lambda}1909 is only marginally detected in a few… CONTINUE READING

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