{"paper":{"title":"The Environments of Ultra-strong Mg II Absorbers","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Anna M. Quider, Daniel B. Nestor, David A. Turnshek, Sandhya M. Rao","submitted_at":"2006-10-25T18:09:59Z","abstract_excerpt":"We present r'- or i'-band WIYN images of the fields of 15 Sloan Digital Sky Survey quasars that have spectra exhibiting intervening MgII absorption-line systems with rest equivalent widths 2.7A \\le REW \\le 6.0A and redshifts 0.42 < z_{abs} < 0.84. Such systems are rare and exhibit projected absorption velocity spreads in excess of \\approx 300-650 km/s. Approximately 60% are expected to be damped Ly\\alpha systems. In each of our fields we detect at least one galaxy that, if at the absorption redshift, would have impact parameter b \\lesssim 40 kpc and luminosity L \\gtrsim 0.3 L*. We measure a si"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0610760","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}