XQR-30: the ultimate XSHOOTER quasar sample at the reionization epoch
- D'Odorico, Valentina
- Bañados, E.
- Becker, G. D.
- Bischetti, M.
- Bosman, S. E. I.
- Cupani, G.
- Davies, R.
- Farina, E. P.
- Ferrara, Andrea
- Feruglio, C.
- Mazzucchelli, C.
- Ryan-Weber, E.
- Schindler, J. -T.
- Sodini, A.
- Venemans, B. P.
- Walter, F.
- Chen, H.
- Lai, S.
- Zhu, Y.
- Bian, F.
- Campo, S.
- Carniani, Stefano
- Cristiani, S.
- Decarli, R.
- Davies, F.
- Drake, A.
- Eilers, A. -C.
- Fan, X.
- Gaikwad, P.
- Gallerani, Simona
- Greig, B.
- Haehnelt, M. G.
- Hennawi, J.
- Keating, L.
- Kulkarni, G.
- Mesinger, Andrei Albert
- Meyer, R. A.
- Neeleman, M.
- Onoue, M.
- Pallottini, Andrea
- Qin, Y.
- Rojas-Ruiz, S.
- Satyavolu, S.
- Sebastian, A.
- Tripodi, R.
- Wang, F.
- Wolfson, M.
- Yang, J.
- Zanchettin, M. V.
DOIAbstract
The final phase of the reionization process can be probed by rest-frame UV absorption spectra of quasars at z ≳ 6, shedding light on the properties of the diffuse intergalactic medium within the first Gyr of the Universe. The ESO Large Programme 'XQR-30: the ultimate XSHOOTER legacy survey of quasars at z ≃ 5.8-6.6' dedicated ~250 h of observations at the VLT to create a homogeneous and high-quality sample of spectra of 30 luminous quasars at z ~ 6, covering the rest wavelength range from the Lyman limit to beyond the Mg II emission. Twelve quasar spectra of similar quality from the XSHOOTER archive were added to form the enlarged XQR-30 sample, corresponding to a total of ~350 h of on-source exposure time. The median effective resolving po...
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