Absorption Systems in the Spectra of 66 z > 4 Quasars

(2) SIRTF Science Center; (3) Institute for Astronomy; California Institute of Technology; Celine Peroux (1); Edinburgh; Isobel M. Hook (3) ((1)Institute of Astronomy; Lisa J. Storrie-Lombardi (2); Mike Irwin (1); Pasadena; Richard G. McMahon (1)

Absorption Systems in the Spectra of 66 z > 4 Quasars

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv astro-ph/0101179 v1 pith:NBJEQ7HH submitted 2001-01-11 astro-ph

Absorption Systems in the Spectra of 66 z > 4 Quasars

Celine Peroux (1) , Lisa J. Storrie-Lombardi (2) , Richard G. McMahon (1) , Mike Irwin (1) , Isobel M. Hook (3) ((1)Institute of Astronomy , University of Cambridge , UK , (2) SIRTF Science Center

show 7 more authors

California Institute of Technology Pasadena USA (3) Institute for Astronomy Royal Observatory Edinburgh UK)

This is my paper

classification astro-ph

keywords systemsabsorptionquasarsspectraatomscm-2columndamped

verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved

0 comments

read the original abstract

We present high signal-to-noise, 5 A resolution (FWHM) spectra of 66 z \ga 4 bright quasars obtained with the 4 m Cerro Tololo Inter-American Observatory and 4.2 m William Hershel telescopes. The primary goal of these observations was to undertake a new survey for intervening absorption systems detected in the spectra of background quasars. We look for both Lyman-limit systems (column densities N(HI) > 1.6 * 10^{17} atoms cm-2) and damped Ly-alpha systems (column densities N(HI) > 2 * 10^{20} atoms cm-2). This work resulted in the discovery of 49 Lyman-limit systems, 15 of which are within 3000 km s-1 of the quasar emission and thus might be associated with the quasar itself, 26 new damped Ly-alpha absorption candidates, 15 of which have z>3.5 and numerous metal absorption systems. In addition ten of the quasars presented here exhibit intrinsic broad absorption lines.

discussion (0)

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

A search for HI absorption in distant star-forming galaxies with ASKAP-FLASH - II. Direct observations and stacking of 21 cm line
astro-ph.GA 2026-07 conditional novelty 5.5

One new associated HI 21 cm absorber is found at z=0.863; ordered stacking of associated non-detections yields only bootstrap-unsupported tentative features that vanish as fainter sources raise optical-depth noise, wh...