Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/26375
Titolo: | Circumgalactic medium of quasars: C IV absorption systems | Autori: | LANDONI, Marco Falomo, R. Treves, A. Scarpa, R. Farina, E. P. |
Data pubblicazione: | 2016 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 457 | Fascicolo: | 1 | Da pagina:: | 267 | Abstract: | We investigate the properties of circumgalactic gas in the halo of quasar (QSO) host galaxies from C IV absorption-line systems. We use the optical spectroscopy of closely aligned pairs of quasars (projected distance ≤ 200 kpc) obtained at the Gran Telescopio Canarias to investigate the distribution of the absorbing gas for a sample of 18 quasars at z ∼ 2. We have found that the detected absorption systems of EW ≥ 0.3 Å associated with the foreground QSOs are revealed up to 200 kpc from the centre of the host galaxy. The structure of the absorbing gas is patchy with a covering fraction of the gas that quickly decreases beyond 100 kpc. These results are in qualitative agreement with those found for the lower ionization metal Mg II λ2800 Å. | URI: | http://hdl.handle.net/20.500.12386/26375 | URL: | https://academic.oup.com/mnras/article/457/1/267/988913 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stv2964 | Bibcode ADS: | 2016MNRAS.457..267L | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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