X-shooter observations of QSO pairs

Abstract

Observations of quasar pairs represent a powerful tool in the study of the intergalactic medium, providing in particular information on the quasar radiative feedback not only along the line of sight, but also in the transverse direction. In this paper, we present the spectra of the four quasar pairs we observed so far with X-shooter, and we discuss two individual spectra affected by the presence of a close quasar in the foreground.

arXiv comment2 pages, 1 figure. Proceedings of the workshop "The first year with X-shooter" October 19-22 2010, Como, Italy. Accepted for publication in Astronomische Nachrichten

References in corpus (12)

• The 2dF QSO Redshift Survey - XII. The spectroscopic catalogue and luminosity function
• Binary Quasars in the Sloan Digital Sky Survey: Evidence for Excess Clustering on Small Scales
• Toward a Measurement of the Cosmological Geometry at z~2: Predicting Lyman-alpha Forest Correlation in Three Dimensions, and the Potential of Future Data Sets
• The 2dF QSO Redshift Survey - V. The 10k catalogue
• Quasars Probing Quasars I: Optically Thick Absorbers Near Luminous Quasars
• Inversion of the Lyman-$\alpha$ forest: 3D investigation of the intergalactic medium
• Transverse Sizes of CIV Absorption Systems Measured from Multiple QSO Sightlines
• Detection of the Transverse Proximity Effect: Radiative Feedback from Bright QSOs
• Tomography of the intergalactic medium with Ly-alpha forests in close QSO pairs
• Transverse and longitudinal correlation functions in the Intergalactic Medium from 32 close pairs of high-redshift quasars
• High resolution spectroscopy of the three dimensional cosmic web with close QSO groups
• The Flux Auto- and Cross-Correlation of the Lyman-alpha Forest. I. Spectroscopy of QSO Pairs with Arcminute Separations and Similar Redshifts