{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:YKL5WZLPO4R7H5GFISG7ZPAVGT","short_pith_number":"pith:YKL5WZLP","canonical_record":{"source":{"id":"1508.04478","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-08-18T23:00:35Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"e520671db496b346e21bdc0d761941fa24d439a94b781056c65c867ddfad3f91","abstract_canon_sha256":"5fc10b8eacdb173eb96d66fb418d39e34e30b7dd083d87fec8cca7f6726760cc"},"schema_version":"1.0"},"canonical_sha256":"c297db656f7723f3f4c5448dfcbc1534df7e8f226b387d2133e3cac84039fb8a","source":{"kind":"arxiv","id":"1508.04478","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.04478","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"1508.04478v1","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.04478","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"YKL5WZLPO4R7","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"YKL5WZLPO4R7H5GF","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"YKL5WZLP","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:YKL5WZLPO4R7H5GFISG7ZPAVGT","target":"record","payload":{"canonical_record":{"source":{"id":"1508.04478","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-08-18T23:00:35Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"e520671db496b346e21bdc0d761941fa24d439a94b781056c65c867ddfad3f91","abstract_canon_sha256":"5fc10b8eacdb173eb96d66fb418d39e34e30b7dd083d87fec8cca7f6726760cc"},"schema_version":"1.0"},"canonical_sha256":"c297db656f7723f3f4c5448dfcbc1534df7e8f226b387d2133e3cac84039fb8a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:30.684225Z","signature_b64":"YqNZPdOOP6PdC4Uqt4HvWg0/kqDa60XYKrXj1Jy4Yj9iM3RXhkXmOg2om4PkLwPsoxSuv9wh4lervvIUVcqNCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c297db656f7723f3f4c5448dfcbc1534df7e8f226b387d2133e3cac84039fb8a","last_reissued_at":"2026-05-18T01:12:30.683838Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:30.683838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.04478","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r60TcsXIQw34jO14eDw8IMutheMrMm8wAWrlbxV2xXDrTNLHAndCM6j8Ce4bQ1G+jg7Jy/S2QAj7WvDxuPxVDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:15:55.192582Z"},"content_sha256":"808c9b8da046052fe048e297b9a8126a560e66e0117957155c74692535ad64a9","schema_version":"1.0","event_id":"sha256:808c9b8da046052fe048e297b9a8126a560e66e0117957155c74692535ad64a9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:YKL5WZLPO4R7H5GFISG7ZPAVGT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The SDSS-IV extended Baryonic Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Abhishek Prakash, Adam D. Myers, Adam S. Bolton, Ashley J. Ross, Aurelio Carnero Rosell, Beth Reid, Cameron K. McBride, David J. Schlegel, Donald P. Schneider, Dustin Lang, Francisco Prada, Guangtun Ben Zhu, Hee-Jong Seo, Jean-Paul Kneib, Jeffrey A. Newman, Jeremy L. Tinker, Joel R. Brownstein, Johan Comparat, Julian E. Bautista, Kyle S. Dawson, Michael R. Blanton, Rita Tojeiro, Sandhya M. Rao, Shirley Ho, Stephen Bailey, Timothee Delubac, Timothy C. Licquia, Vivek Mariappan, Will J. Percival","submitted_at":"2015-08-18T23:00:35Z","abstract_excerpt":"We describe the algorithm used to select the Luminous Red Galaxy (LRG) sample for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV) using photometric data from both the SDSS and the Wide-Field Infrared Survey Explorer (WISE). LRG targets are required to meet a set of color selection criteria and have z-band and i-band MODEL magnitudes z < 19.95 and 19.9 < i < 21.8, respectively. Our algorithm selects roughly 50 LRG targets per square degree, the great majority of which lie in the redshift range 0.6 < z < 1.0 (median redshift 0.71). We dem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.04478","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:12:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2brNw/dou21FIe2i0j6MIc4pzjfs52teBfXGhJTX8MYWnbYIn6XOABZVKfJtl54X7BPpqVGaTeP9HhEu+/xpDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T03:15:55.193299Z"},"content_sha256":"63525c87b4d0458504647f4a059ad11de9dffe75444598d58d3addb2fe2150be","schema_version":"1.0","event_id":"sha256:63525c87b4d0458504647f4a059ad11de9dffe75444598d58d3addb2fe2150be"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YKL5WZLPO4R7H5GFISG7ZPAVGT/bundle.json","state_url":"https://pith.science/pith/YKL5WZLPO4R7H5GFISG7ZPAVGT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YKL5WZLPO4R7H5GFISG7ZPAVGT/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T03:15:55Z","links":{"resolver":"https://pith.science/pith/YKL5WZLPO4R7H5GFISG7ZPAVGT","bundle":"https://pith.science/pith/YKL5WZLPO4R7H5GFISG7ZPAVGT/bundle.json","state":"https://pith.science/pith/YKL5WZLPO4R7H5GFISG7ZPAVGT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YKL5WZLPO4R7H5GFISG7ZPAVGT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:YKL5WZLPO4R7H5GFISG7ZPAVGT","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"5fc10b8eacdb173eb96d66fb418d39e34e30b7dd083d87fec8cca7f6726760cc","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-08-18T23:00:35Z","title_canon_sha256":"e520671db496b346e21bdc0d761941fa24d439a94b781056c65c867ddfad3f91"},"schema_version":"1.0","source":{"id":"1508.04478","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.04478","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"arxiv_version","alias_value":"1508.04478v1","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.04478","created_at":"2026-05-18T01:12:30Z"},{"alias_kind":"pith_short_12","alias_value":"YKL5WZLPO4R7","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"YKL5WZLPO4R7H5GF","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"YKL5WZLP","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:63525c87b4d0458504647f4a059ad11de9dffe75444598d58d3addb2fe2150be","target":"graph","created_at":"2026-05-18T01:12:30Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We describe the algorithm used to select the Luminous Red Galaxy (LRG) sample for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV) using photometric data from both the SDSS and the Wide-Field Infrared Survey Explorer (WISE). LRG targets are required to meet a set of color selection criteria and have z-band and i-band MODEL magnitudes z < 19.95 and 19.9 < i < 21.8, respectively. Our algorithm selects roughly 50 LRG targets per square degree, the great majority of which lie in the redshift range 0.6 < z < 1.0 (median redshift 0.71). We dem","authors_text":"Abhishek Prakash, Adam D. Myers, Adam S. Bolton, Ashley J. Ross, Aurelio Carnero Rosell, Beth Reid, Cameron K. McBride, David J. Schlegel, Donald P. Schneider, Dustin Lang, Francisco Prada, Guangtun Ben Zhu, Hee-Jong Seo, Jean-Paul Kneib, Jeffrey A. Newman, Jeremy L. Tinker, Joel R. Brownstein, Johan Comparat, Julian E. Bautista, Kyle S. Dawson, Michael R. Blanton, Rita Tojeiro, Sandhya M. Rao, Shirley Ho, Stephen Bailey, Timothee Delubac, Timothy C. Licquia, Vivek Mariappan, Will J. Percival","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-08-18T23:00:35Z","title":"The SDSS-IV extended Baryonic Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.04478","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:808c9b8da046052fe048e297b9a8126a560e66e0117957155c74692535ad64a9","target":"record","created_at":"2026-05-18T01:12:30Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"5fc10b8eacdb173eb96d66fb418d39e34e30b7dd083d87fec8cca7f6726760cc","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-08-18T23:00:35Z","title_canon_sha256":"e520671db496b346e21bdc0d761941fa24d439a94b781056c65c867ddfad3f91"},"schema_version":"1.0","source":{"id":"1508.04478","kind":"arxiv","version":1}},"canonical_sha256":"c297db656f7723f3f4c5448dfcbc1534df7e8f226b387d2133e3cac84039fb8a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c297db656f7723f3f4c5448dfcbc1534df7e8f226b387d2133e3cac84039fb8a","first_computed_at":"2026-05-18T01:12:30.683838Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:30.683838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YqNZPdOOP6PdC4Uqt4HvWg0/kqDa60XYKrXj1Jy4Yj9iM3RXhkXmOg2om4PkLwPsoxSuv9wh4lervvIUVcqNCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:30.684225Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.04478","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:808c9b8da046052fe048e297b9a8126a560e66e0117957155c74692535ad64a9","sha256:63525c87b4d0458504647f4a059ad11de9dffe75444598d58d3addb2fe2150be"],"state_sha256":"6dc0242abff70bd2dfcddc9e22e13ae4c0c89b665123305d442830ee1abb3afe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BQMcQUG3pzgA7V1K5er+AxjDYOLbormqjIPPhdIhEBB7X6qmmcx2j2zgDtYdkFgVpjLAbsi54z4XqdjX1D+1CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T03:15:55.197213Z","bundle_sha256":"ba7bd589a2c519893a50cc7cdf4e0c7c69de01bb519b48626efbd5adf2078ab8"}}