{"paper":{"title":"Passive and star-forming galaxies at $1.4 \\leq z \\leq2.5$ in the Aegis field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Guanwen Fang, Xuanbin Lin, Xu Kong, Yang Chen","submitted_at":"2012-04-24T12:23:56Z","abstract_excerpt":"Using a simple two-color selection based on $g$-, $z$-, and $K$-band photometry, we pick out 1609 star-forming galaxies (sgzKs) and 422 passively evolving galaxies (pgzKs) at z\\sim2$ from a $K$-band-selected sample ($K_{\\rm AB} < 22.0$) in an area of $\\sim 0.44$ deg$^{2}$ of the All-wavelength Extended Groth Strip International Survey. The number counts of pgzKs\\ in our sample turn over at $K_{\\rm AB} \\sim 21.0$, and both the number of faint and bright objects (including sgzKs\\ and pgzKs) exceed the predictions of a recent semi-analytic model of galaxy formation, a more successful model is nee"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5354","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"}