Web of the giant: Spectroscopic confirmation of a large-scale structure around the z = 6.31 quasar SDSS J1030+0524

  title={Web of the giant: Spectroscopic confirmation of a large-scale structure around the z = 6.31 quasar SDSS J1030+0524},
  author={Marco Mignoli and Roberto Gilli and Roberto Decarli and Eros Vanzella and Barbara Balmaverde and Nico Cappelluti and Letizia P. Cassar{\`a} and Andrea Comastri and Felice Cusano and Kazushi Iwasawa and Stefano Marchesi and Isabella Prandoni and Cristian Vignali and Fabio Vito and Giovanni Zamorani and Marco Chiaberge and Colin Norman},
  journal={Astronomy \& Astrophysics},
We report on the spectroscopic confirmation of a large-scale structure around the luminous z = 6.31 quasi-stellar object (QSO) SDSS J1030+0524, powered by a one billion solar mass black hole. The structure is populated by at least six members, namely, four Lyman-break galaxies (LBGs), and two Lyman alpha emitters (LAEs). The four LBGs were identified among a sample of 21 i-band dropouts with zAB <  25.5 selected up to projected separations of 5 physical Mpc (15 arcmin) from the QSO. Their… 

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