A galaxy as the source of a C iv absorption system close to the epoch of reionization

作者：Diaz C Gonzalo^*; Ryan Weber Emma V; Cooke Jeff; Pettini Max; Madau Piero

来源：Monthly Notices of the Royal Astronomical Society, 2011, 418(2): 820-827.

DOI：10.1111/j.1365-2966.2011.19534.x

• galaxies: distances and redshifts
• galaxies: high-redshift
• intergalactic medium
• early Universe

We find a bright (LUV= 2.5 L?z= 6) Lya emitter (LAE) at redshift z= 5.719 at a projected distance of 79 physical kpc from a strong triply ionized carbon (C iv) absorption system at redshift z= 5.7238 previously reported in the spectrum of the zem= 6.309 quasi-stellar object SDSS J1030+0524. This is the highest redshift galaxyabsorber pair detected to-date, supporting the idea that galaxy-wide outflows were already in place at the end of the epoch of reionization. The proximity of this object makes it the most likely source of metals, consistent with models of outflows at lower redshift where significant observational evidence relates metal absorption systems with galaxies hosting outflows.

• 出版日期2011-12