{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GS44R6PRAXHA4WVAMOYBUGED2M","short_pith_number":"pith:GS44R6PR","canonical_record":{"source":{"id":"1704.00338","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-02T18:08:08Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"0dd2af30d2047c7dd022dd0c94aef78f99aab974c9e47fa6891a76ae8fd61483","abstract_canon_sha256":"49babe214037ce5ff6e906d2a932e2f6e906180acd10cfdc65163ba200e51866"},"schema_version":"1.0"},"canonical_sha256":"34b9c8f9f105ce0e5aa063b01a1883d304cd104a4b0a0db806ea1547d4e80f64","source":{"kind":"arxiv","id":"1704.00338","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00338","created_at":"2026-05-18T00:36:32Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00338v1","created_at":"2026-05-18T00:36:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00338","created_at":"2026-05-18T00:36:32Z"},{"alias_kind":"pith_short_12","alias_value":"GS44R6PRAXHA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GS44R6PRAXHA4WVA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GS44R6PR","created_at":"2026-05-18T12:31:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GS44R6PRAXHA4WVAMOYBUGED2M","target":"record","payload":{"canonical_record":{"source":{"id":"1704.00338","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-02T18:08:08Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"0dd2af30d2047c7dd022dd0c94aef78f99aab974c9e47fa6891a76ae8fd61483","abstract_canon_sha256":"49babe214037ce5ff6e906d2a932e2f6e906180acd10cfdc65163ba200e51866"},"schema_version":"1.0"},"canonical_sha256":"34b9c8f9f105ce0e5aa063b01a1883d304cd104a4b0a0db806ea1547d4e80f64","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:36:32.208588Z","signature_b64":"uIKjoSSUmO27JpueOm+s85iHi+KzDMEeZ4byCtihLCPiNTpMUUB8jXIyAg2Hf4njY2R2p5fBpo9HjhXGGkzGBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34b9c8f9f105ce0e5aa063b01a1883d304cd104a4b0a0db806ea1547d4e80f64","last_reissued_at":"2026-05-18T00:36:32.207910Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:36:32.207910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.00338","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":"2026-05-18T00:36:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+rIBcDCixjm4fzJQL0dvyk7QiKYAoLiHs0GM2Gwuf7v4e0P3oOSVw2bUbvkwIMdrKx3mZKm1w991Fv/OzmHOAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T18:37:19.190555Z"},"content_sha256":"273c0ab83536ffea0165c453cc661869405c587668d56cf9eb1aca83bb6367fa","schema_version":"1.0","event_id":"sha256:273c0ab83536ffea0165c453cc661869405c587668d56cf9eb1aca83bb6367fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GS44R6PRAXHA4WVAMOYBUGED2M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: final Emission Line 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":"A. Dey, A. J. Ross, A. Raichoor, C. Gorgoni, Ch. Y\\`eche, D. J. Schlegel, D. Lang, E. Jullo, F. Prada, G.-B. Zhao, G. B. Zhu, H.-J. Seo, J. A. Newmann, J. Bautista, J. Comparat, J. L. Tinker, J. Moustakas, J.-P. Kneib, J. R. Brownstein, K. S. Dawson, N. Palanque-Delabrouille, T. Delubac, V. Mariappan, W. J. Percival, Y. Wang","submitted_at":"2017-04-02T18:08:08Z","abstract_excerpt":"We describe the algorithm used to select the Emission Line Galaxy (ELG) sample at $z \\sim 0.85$ for the extended Baryon Oscillation Spectroscopic Survey of the Sloan Digital Sky Survey IV, using photometric data from the DECam Legacy Survey. Our selection is based on a selection box in the $g-r$ vs. $r-z$ colour-colour space and a cut on the $g$-band magnitude, to favour galaxies in the desired redshift range with strong [OII] emission. It provides a target density of 200 deg$^{-2}$ on the North Galactic Cap (NGC) and of 240 deg$^{-2}$ on the South Galactic Cap (SGC), where we use a larger sel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00338","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":"2026-05-18T00:36:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yjb+cbXzbKOyBTjubOoykaFLLbvGoMOxisXJ7O5Ss6GCg3hGjtMXLXPI+W80PB2sleDdtSAcMsTSKO/NRs1bDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T18:37:19.190937Z"},"content_sha256":"09ca9fb0d9d880598b19c3ecf642f43dbe8386a91c43970cfde4ee637e1f4eac","schema_version":"1.0","event_id":"sha256:09ca9fb0d9d880598b19c3ecf642f43dbe8386a91c43970cfde4ee637e1f4eac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GS44R6PRAXHA4WVAMOYBUGED2M/bundle.json","state_url":"https://pith.science/pith/GS44R6PRAXHA4WVAMOYBUGED2M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GS44R6PRAXHA4WVAMOYBUGED2M/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":"2026-05-20T18:37:19Z","links":{"resolver":"https://pith.science/pith/GS44R6PRAXHA4WVAMOYBUGED2M","bundle":"https://pith.science/pith/GS44R6PRAXHA4WVAMOYBUGED2M/bundle.json","state":"https://pith.science/pith/GS44R6PRAXHA4WVAMOYBUGED2M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GS44R6PRAXHA4WVAMOYBUGED2M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GS44R6PRAXHA4WVAMOYBUGED2M","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":"49babe214037ce5ff6e906d2a932e2f6e906180acd10cfdc65163ba200e51866","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-02T18:08:08Z","title_canon_sha256":"0dd2af30d2047c7dd022dd0c94aef78f99aab974c9e47fa6891a76ae8fd61483"},"schema_version":"1.0","source":{"id":"1704.00338","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00338","created_at":"2026-05-18T00:36:32Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00338v1","created_at":"2026-05-18T00:36:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00338","created_at":"2026-05-18T00:36:32Z"},{"alias_kind":"pith_short_12","alias_value":"GS44R6PRAXHA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GS44R6PRAXHA4WVA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GS44R6PR","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:09ca9fb0d9d880598b19c3ecf642f43dbe8386a91c43970cfde4ee637e1f4eac","target":"graph","created_at":"2026-05-18T00:36:32Z","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 Emission Line Galaxy (ELG) sample at $z \\sim 0.85$ for the extended Baryon Oscillation Spectroscopic Survey of the Sloan Digital Sky Survey IV, using photometric data from the DECam Legacy Survey. Our selection is based on a selection box in the $g-r$ vs. $r-z$ colour-colour space and a cut on the $g$-band magnitude, to favour galaxies in the desired redshift range with strong [OII] emission. It provides a target density of 200 deg$^{-2}$ on the North Galactic Cap (NGC) and of 240 deg$^{-2}$ on the South Galactic Cap (SGC), where we use a larger sel","authors_text":"A. Dey, A. J. Ross, A. Raichoor, C. Gorgoni, Ch. Y\\`eche, D. J. Schlegel, D. Lang, E. Jullo, F. Prada, G.-B. Zhao, G. B. Zhu, H.-J. Seo, J. A. Newmann, J. Bautista, J. Comparat, J. L. Tinker, J. Moustakas, J.-P. Kneib, J. R. Brownstein, K. S. Dawson, N. Palanque-Delabrouille, T. Delubac, V. Mariappan, W. J. Percival, Y. Wang","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-02T18:08:08Z","title":"The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: final Emission Line Galaxy Target Selection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00338","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":"sha256:273c0ab83536ffea0165c453cc661869405c587668d56cf9eb1aca83bb6367fa","target":"record","created_at":"2026-05-18T00:36:32Z","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":"49babe214037ce5ff6e906d2a932e2f6e906180acd10cfdc65163ba200e51866","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-04-02T18:08:08Z","title_canon_sha256":"0dd2af30d2047c7dd022dd0c94aef78f99aab974c9e47fa6891a76ae8fd61483"},"schema_version":"1.0","source":{"id":"1704.00338","kind":"arxiv","version":1}},"canonical_sha256":"34b9c8f9f105ce0e5aa063b01a1883d304cd104a4b0a0db806ea1547d4e80f64","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34b9c8f9f105ce0e5aa063b01a1883d304cd104a4b0a0db806ea1547d4e80f64","first_computed_at":"2026-05-18T00:36:32.207910Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:32.207910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uIKjoSSUmO27JpueOm+s85iHi+KzDMEeZ4byCtihLCPiNTpMUUB8jXIyAg2Hf4njY2R2p5fBpo9HjhXGGkzGBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:32.208588Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.00338","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:273c0ab83536ffea0165c453cc661869405c587668d56cf9eb1aca83bb6367fa","sha256:09ca9fb0d9d880598b19c3ecf642f43dbe8386a91c43970cfde4ee637e1f4eac"],"state_sha256":"563066cff25c06ae7a852b643d0b9424bf50483af8d197b83bdb2e30157141ed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+LusCBnLVhydYO16pwm2gkxLAwjX5FN1rXcgVBJE9zABjB8JinQWQveERLZHWL26jo+ho2nqw1ybbmTRqVxvAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T18:37:19.193227Z","bundle_sha256":"458e7694456e80a589cc9125347049a2068fb9a98cabbcee69fa6bf17e1b3d8b"}}