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We use colour cuts to identify galaxies in this redshift range, and find that three of the radio galaxies are surrounded by significant surface overdensities of such galaxies. The excess galaxies that comprise these overdensities are strongly clustered, suggesting they are physically associated. The colour distribution of the galaxies responsible for the overdensity are consistent with those of galaxies that lie within a narrow redshift range at z ~ 2.4. Thus the excess galaxies are consistent"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1008.4588","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-26T20:03:07Z","cross_cats_sorted":[],"title_canon_sha256":"48d806e4d980199a3c57bfbf34ee44a7ae0414ea0d88362dab6381b4190e0496","abstract_canon_sha256":"fc302fcfcfde3336c638913735be55bc2cfb457944e9a48ab1926f9c12ab8646"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:42.303065Z","signature_b64":"Nea931kDAtM56EUomly47iJYmnOGCA7VVOHSJzoocjh8W0YPO0vHzUsEBmH43aNcBLBZ+UjOBEEwwG8RgEa8Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e2629c797ecd1dde2cf439ad0482779eb6f4a1b4da072b6d7e5ac97b2b31827","last_reissued_at":"2026-05-18T02:05:42.302422Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:42.302422Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Galaxy protocluster candidates around z ~ 2.4 radio galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Galametz, A. W. Zirm, B. P. Venemans, C. De Breuck, G. K. Miley, H. J. A. R\\\"ottgering, J. D. Kurk, J. Vernet, M. Doherty, N. A. Hatch, N. Seymour, R. A. Overzier, T. Kodama","submitted_at":"2010-08-26T20:03:07Z","abstract_excerpt":"We study the environments of 6 radio galaxies at 2.2 < z < 2.6 using wide-field near-infrared images. We use colour cuts to identify galaxies in this redshift range, and find that three of the radio galaxies are surrounded by significant surface overdensities of such galaxies. The excess galaxies that comprise these overdensities are strongly clustered, suggesting they are physically associated. The colour distribution of the galaxies responsible for the overdensity are consistent with those of galaxies that lie within a narrow redshift range at z ~ 2.4. 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