{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:R2WHWCZWW2A2WPS3NNJ7GB63GE","short_pith_number":"pith:R2WHWCZW","canonical_record":{"source":{"id":"2009.06017","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-09-13T15:13:54Z","cross_cats_sorted":[],"title_canon_sha256":"1116cfe7e915f5a47615ca56137ddfe70871fec6dcf690bc0d6699c120f2e3c4","abstract_canon_sha256":"e46c12c58e52005b82d95214128d13d442b4a7864060f20a29fb8178c056dac7"},"schema_version":"1.0"},"canonical_sha256":"8eac7b0b36b681ab3e5b6b53f307db311c6278eff9b995ba01d677d6f5f89a74","source":{"kind":"arxiv","id":"2009.06017","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.06017","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"arxiv_version","alias_value":"2009.06017v1","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.06017","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"pith_short_12","alias_value":"R2WHWCZWW2A2","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"pith_short_16","alias_value":"R2WHWCZWW2A2WPS3","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"pith_short_8","alias_value":"R2WHWCZW","created_at":"2026-07-05T01:35:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:R2WHWCZWW2A2WPS3NNJ7GB63GE","target":"record","payload":{"canonical_record":{"source":{"id":"2009.06017","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-09-13T15:13:54Z","cross_cats_sorted":[],"title_canon_sha256":"1116cfe7e915f5a47615ca56137ddfe70871fec6dcf690bc0d6699c120f2e3c4","abstract_canon_sha256":"e46c12c58e52005b82d95214128d13d442b4a7864060f20a29fb8178c056dac7"},"schema_version":"1.0"},"canonical_sha256":"8eac7b0b36b681ab3e5b6b53f307db311c6278eff9b995ba01d677d6f5f89a74","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:35:03.669653Z","signature_b64":"uXnhBaMESbx7TUz8dfxouE8zZO/nFRVyIsN6/V0d+wKf/VcR0E7KSL28k4u8T2LtpNQuKRV2aXPFpAG9WfO5Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8eac7b0b36b681ab3e5b6b53f307db311c6278eff9b995ba01d677d6f5f89a74","last_reissued_at":"2026-07-05T01:35:03.669072Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:35:03.669072Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.06017","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":"2026-07-05T01:35:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SqpgbPGgWRl+fj5jrZ7lFcwrcnDAWbdB+iHiXh/pTAc17u1a7owUVaTApsJbM78SqK7IJcS8Yxbo62NI/jGbBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T06:07:10.576063Z"},"content_sha256":"0485085477c378b5319f96d94cb69a86255d2e1371a40b87b7032ab8ab8eb116","schema_version":"1.0","event_id":"sha256:0485085477c378b5319f96d94cb69a86255d2e1371a40b87b7032ab8ab8eb116"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:R2WHWCZWW2A2WPS3NNJ7GB63GE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reddening-free Q indices to identify Be star candidates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Carlos Escudero, Facundo Quiroga, Franco Ronchetti, Laura Lanzarini, Yael Aidelman","submitted_at":"2020-09-13T15:13:54Z","abstract_excerpt":"Astronomical databases currently provide high-volume spectroscopic and photometric data. While spectroscopic data is better suited to the analysis of many astronomical objects, photometric data is relatively easier to obtain due to shorter telescope usage time. Therefore, there is a growing need to use photometric information to automatically identify objects for further detailed studies, specially H{\\alpha} emission line stars such as Be stars. Photometric color-color diagrams (CCDs) are commonly used to identify this kind of objects. However, their identification in CCDs is further complicat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.06017","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2009.06017/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:35:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gT+wwb0ZBhMVMT79nZLmLbnVekUNeoc5eAvHOrIJrvhcmaCNcMOsdDEDFbZ9sCQ74RRk0a3S1j3dxhS70U+PAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T06:07:10.577088Z"},"content_sha256":"352a9a5e0df8503d39cf7fdc7e727991205a5dd84d808327ffcda80fac469849","schema_version":"1.0","event_id":"sha256:352a9a5e0df8503d39cf7fdc7e727991205a5dd84d808327ffcda80fac469849"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R2WHWCZWW2A2WPS3NNJ7GB63GE/bundle.json","state_url":"https://pith.science/pith/R2WHWCZWW2A2WPS3NNJ7GB63GE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R2WHWCZWW2A2WPS3NNJ7GB63GE/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":"2026-08-04T06:07:10Z","links":{"resolver":"https://pith.science/pith/R2WHWCZWW2A2WPS3NNJ7GB63GE","bundle":"https://pith.science/pith/R2WHWCZWW2A2WPS3NNJ7GB63GE/bundle.json","state":"https://pith.science/pith/R2WHWCZWW2A2WPS3NNJ7GB63GE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R2WHWCZWW2A2WPS3NNJ7GB63GE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:R2WHWCZWW2A2WPS3NNJ7GB63GE","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":"e46c12c58e52005b82d95214128d13d442b4a7864060f20a29fb8178c056dac7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-09-13T15:13:54Z","title_canon_sha256":"1116cfe7e915f5a47615ca56137ddfe70871fec6dcf690bc0d6699c120f2e3c4"},"schema_version":"1.0","source":{"id":"2009.06017","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.06017","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"arxiv_version","alias_value":"2009.06017v1","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.06017","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"pith_short_12","alias_value":"R2WHWCZWW2A2","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"pith_short_16","alias_value":"R2WHWCZWW2A2WPS3","created_at":"2026-07-05T01:35:03Z"},{"alias_kind":"pith_short_8","alias_value":"R2WHWCZW","created_at":"2026-07-05T01:35:03Z"}],"graph_snapshots":[{"event_id":"sha256:352a9a5e0df8503d39cf7fdc7e727991205a5dd84d808327ffcda80fac469849","target":"graph","created_at":"2026-07-05T01:35:03Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2009.06017/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Astronomical databases currently provide high-volume spectroscopic and photometric data. While spectroscopic data is better suited to the analysis of many astronomical objects, photometric data is relatively easier to obtain due to shorter telescope usage time. Therefore, there is a growing need to use photometric information to automatically identify objects for further detailed studies, specially H{\\alpha} emission line stars such as Be stars. Photometric color-color diagrams (CCDs) are commonly used to identify this kind of objects. However, their identification in CCDs is further complicat","authors_text":"Carlos Escudero, Facundo Quiroga, Franco Ronchetti, Laura Lanzarini, Yael Aidelman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-09-13T15:13:54Z","title":"Reddening-free Q indices to identify Be star candidates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.06017","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":"sha256:0485085477c378b5319f96d94cb69a86255d2e1371a40b87b7032ab8ab8eb116","target":"record","created_at":"2026-07-05T01:35:03Z","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":"e46c12c58e52005b82d95214128d13d442b4a7864060f20a29fb8178c056dac7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-09-13T15:13:54Z","title_canon_sha256":"1116cfe7e915f5a47615ca56137ddfe70871fec6dcf690bc0d6699c120f2e3c4"},"schema_version":"1.0","source":{"id":"2009.06017","kind":"arxiv","version":1}},"canonical_sha256":"8eac7b0b36b681ab3e5b6b53f307db311c6278eff9b995ba01d677d6f5f89a74","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8eac7b0b36b681ab3e5b6b53f307db311c6278eff9b995ba01d677d6f5f89a74","first_computed_at":"2026-07-05T01:35:03.669072Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:35:03.669072Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uXnhBaMESbx7TUz8dfxouE8zZO/nFRVyIsN6/V0d+wKf/VcR0E7KSL28k4u8T2LtpNQuKRV2aXPFpAG9WfO5Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:35:03.669653Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.06017","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0485085477c378b5319f96d94cb69a86255d2e1371a40b87b7032ab8ab8eb116","sha256:352a9a5e0df8503d39cf7fdc7e727991205a5dd84d808327ffcda80fac469849"],"state_sha256":"f7b0ba8c67be09a8ba857b90d7b1882f4066e06ab6087e6e585eba68b8a59f3c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VEl/zpPuiO3wkTN1ut1cIlXCZDZ0ypEw5THUQEoH9ALNIDkx8BgN1gJcl70wwG67n6H5OYI15EFOKtH75nFMAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T06:07:10.582638Z","bundle_sha256":"26dc20618a7f0ec2b2d78855d92c26f07bd48aa261392e5c5a52ff4cf3340e16"}}