TY - JOUR
T1 - The flux auto- and cross-correlation of the Lyα forest. I. Spectroscopy of QSO pairs with arcminute separations and similar redshifts
AU - Marble, Andrew R.
AU - Eriksen, Kristoefer A.
AU - Impey, Chris D.
AU - Lei, Bai
AU - Miller, Lance
PY - 2008/3
Y1 - 2008/3
N2 - The Lyα forest has opened a new redshift regime for cosmological investigation. At z > 2 it provides a unique probe of cosmic geometry and an independent constraint on dark energy that is not subject to standard candle or ruler assumptions. In Paper I of this series on using the Lya forest observed in pairs of QSOs for a new application of the Alcock-Paczynski test, we present and discuss the results of a campaign to obtain moderate-resolution spectroscopy (FWHM ≃ 2.5 Å) of the Lyα forest in pairs of QSOs with small redshift differences (Δz < 0.25, z > 2.2) and arc-minute separations (θ < 5′). This data set, composed of seven individual QSOs, 35 pairs, and one triplet, is also well suited for future investigations of the coherence of Lya absorbers on ∼1 Mpc transverse scales and the transverse proximity effect. We note seven revisions for previously published QSO identifications and/or redshifts.
AB - The Lyα forest has opened a new redshift regime for cosmological investigation. At z > 2 it provides a unique probe of cosmic geometry and an independent constraint on dark energy that is not subject to standard candle or ruler assumptions. In Paper I of this series on using the Lya forest observed in pairs of QSOs for a new application of the Alcock-Paczynski test, we present and discuss the results of a campaign to obtain moderate-resolution spectroscopy (FWHM ≃ 2.5 Å) of the Lyα forest in pairs of QSOs with small redshift differences (Δz < 0.25, z > 2.2) and arc-minute separations (θ < 5′). This data set, composed of seven individual QSOs, 35 pairs, and one triplet, is also well suited for future investigations of the coherence of Lya absorbers on ∼1 Mpc transverse scales and the transverse proximity effect. We note seven revisions for previously published QSO identifications and/or redshifts.
KW - Cosmology: observations
KW - Errata, addenda
KW - Intergalactic medium
KW - Quasars: absorption lines
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U2 - 10.1086/523852
DO - 10.1086/523852
M3 - Article
AN - SCOPUS:41049103144
VL - 175
SP - 29
EP - 47
JO - Astrophysical Journal, Supplement Series
JF - Astrophysical Journal, Supplement Series
SN - 0067-0049
IS - 1
ER -