{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:VMMAAPLHUDLWUWBTDBTSOMTVNH","short_pith_number":"pith:VMMAAPLH","canonical_record":{"source":{"id":"astro-ph/0111270","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-11-14T14:10:42Z","cross_cats_sorted":[],"title_canon_sha256":"a7178d8edfe4073433cdcf67ab0e44cf83bd23d59f21657e4d6fd0ca0aad7520","abstract_canon_sha256":"cc3060c100b55ac41c2df894282512dd28c4e7886a99ea6a3d2a04087ea0b4ab"},"schema_version":"1.0"},"canonical_sha256":"ab18003d67a0d76a5833186727327569d1809396fc1d6c3dd1da623f7edffa0e","source":{"kind":"arxiv","id":"astro-ph/0111270","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0111270","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0111270v1","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0111270","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"pith_short_12","alias_value":"VMMAAPLHUDLW","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"VMMAAPLHUDLWUWBT","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"VMMAAPLH","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:VMMAAPLHUDLWUWBTDBTSOMTVNH","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0111270","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-11-14T14:10:42Z","cross_cats_sorted":[],"title_canon_sha256":"a7178d8edfe4073433cdcf67ab0e44cf83bd23d59f21657e4d6fd0ca0aad7520","abstract_canon_sha256":"cc3060c100b55ac41c2df894282512dd28c4e7886a99ea6a3d2a04087ea0b4ab"},"schema_version":"1.0"},"canonical_sha256":"ab18003d67a0d76a5833186727327569d1809396fc1d6c3dd1da623f7edffa0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:45.285643Z","signature_b64":"6uQafDN/e2n9aMI0HAF377vXGYaAVa7DR/zaDqMbfPEv7ouWnf5GWfHp929Tp456JrPbI0wcn2MeohtetdYWBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab18003d67a0d76a5833186727327569d1809396fc1d6c3dd1da623f7edffa0e","last_reissued_at":"2026-05-18T01:07:45.285022Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:45.285022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0111270","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":"2026-05-18T01:07:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FDYnsNTC9QxS5nh0BpXlWdqFfp4vNLhnh7qBFzNvhatzHwZyKS5UxjaZp8SQ5EJHQ4aHRP6ZiZ7Yn/sVLiOGAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T14:24:53.324414Z"},"content_sha256":"dea098fc783821d8a2885e261adea581bc20fa5f6177027e77ebd0d7b52cfcd0","schema_version":"1.0","event_id":"sha256:dea098fc783821d8a2885e261adea581bc20fa5f6177027e77ebd0d7b52cfcd0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:VMMAAPLHUDLWUWBTDBTSOMTVNH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ISO-LWS two colour diagram of young stellar objects","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"et al, S. Pezzuto","submitted_at":"2001-11-14T14:10:42Z","abstract_excerpt":"We present a [60--100] vs. [100--170] $\\mu$m two colour diagram for a sample of 61 young stellar objects (YSOs) observed with the Long Wavelength Spectrometer (LWS) on-board the Infrared Space Observatory (ISO). The sample consists of 17 Class 0 sources, 15 Class I, 9 Bright Class I ($L_{\\rm bol}>10^4 L_\\odot$), 20 Class II (14 Herbig Ae/Be stars and 6 T Tauri stars). We find that each class occupies a well defined region in our diagram with colour temperatures increasing from Class 0 to Class II. Therefore the [60--100] vs. [100--170] two colours diagram is a powerful and simple tool to deriv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0111270","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":"2026-05-18T01:07:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9N6qikvGB7eTeT+GaaRFolZKpJ3FNfhlPuJzaRe8i/wVpiIoJ/HUbfrigwYBYOvPLC++ZHTPGdsvtc2AgIzMAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T14:24:53.324764Z"},"content_sha256":"703fe6977eb016daec4b7e1a0cb9c296bfca853a97d5efde8caf2282e9ccaed5","schema_version":"1.0","event_id":"sha256:703fe6977eb016daec4b7e1a0cb9c296bfca853a97d5efde8caf2282e9ccaed5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VMMAAPLHUDLWUWBTDBTSOMTVNH/bundle.json","state_url":"https://pith.science/pith/VMMAAPLHUDLWUWBTDBTSOMTVNH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VMMAAPLHUDLWUWBTDBTSOMTVNH/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":"2026-07-04T14:24:53Z","links":{"resolver":"https://pith.science/pith/VMMAAPLHUDLWUWBTDBTSOMTVNH","bundle":"https://pith.science/pith/VMMAAPLHUDLWUWBTDBTSOMTVNH/bundle.json","state":"https://pith.science/pith/VMMAAPLHUDLWUWBTDBTSOMTVNH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VMMAAPLHUDLWUWBTDBTSOMTVNH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:VMMAAPLHUDLWUWBTDBTSOMTVNH","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":"cc3060c100b55ac41c2df894282512dd28c4e7886a99ea6a3d2a04087ea0b4ab","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-11-14T14:10:42Z","title_canon_sha256":"a7178d8edfe4073433cdcf67ab0e44cf83bd23d59f21657e4d6fd0ca0aad7520"},"schema_version":"1.0","source":{"id":"astro-ph/0111270","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0111270","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0111270v1","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0111270","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"pith_short_12","alias_value":"VMMAAPLHUDLW","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"VMMAAPLHUDLWUWBT","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"VMMAAPLH","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:703fe6977eb016daec4b7e1a0cb9c296bfca853a97d5efde8caf2282e9ccaed5","target":"graph","created_at":"2026-05-18T01:07:45Z","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 present a [60--100] vs. [100--170] $\\mu$m two colour diagram for a sample of 61 young stellar objects (YSOs) observed with the Long Wavelength Spectrometer (LWS) on-board the Infrared Space Observatory (ISO). The sample consists of 17 Class 0 sources, 15 Class I, 9 Bright Class I ($L_{\\rm bol}>10^4 L_\\odot$), 20 Class II (14 Herbig Ae/Be stars and 6 T Tauri stars). We find that each class occupies a well defined region in our diagram with colour temperatures increasing from Class 0 to Class II. Therefore the [60--100] vs. [100--170] two colours diagram is a powerful and simple tool to deriv","authors_text":"et al, S. Pezzuto","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-11-14T14:10:42Z","title":"ISO-LWS two colour diagram of young stellar objects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0111270","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:dea098fc783821d8a2885e261adea581bc20fa5f6177027e77ebd0d7b52cfcd0","target":"record","created_at":"2026-05-18T01:07:45Z","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":"cc3060c100b55ac41c2df894282512dd28c4e7886a99ea6a3d2a04087ea0b4ab","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-11-14T14:10:42Z","title_canon_sha256":"a7178d8edfe4073433cdcf67ab0e44cf83bd23d59f21657e4d6fd0ca0aad7520"},"schema_version":"1.0","source":{"id":"astro-ph/0111270","kind":"arxiv","version":1}},"canonical_sha256":"ab18003d67a0d76a5833186727327569d1809396fc1d6c3dd1da623f7edffa0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab18003d67a0d76a5833186727327569d1809396fc1d6c3dd1da623f7edffa0e","first_computed_at":"2026-05-18T01:07:45.285022Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:45.285022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6uQafDN/e2n9aMI0HAF377vXGYaAVa7DR/zaDqMbfPEv7ouWnf5GWfHp929Tp456JrPbI0wcn2MeohtetdYWBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:45.285643Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0111270","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dea098fc783821d8a2885e261adea581bc20fa5f6177027e77ebd0d7b52cfcd0","sha256:703fe6977eb016daec4b7e1a0cb9c296bfca853a97d5efde8caf2282e9ccaed5"],"state_sha256":"a2ee819a2ea6392d2325be2046aa2bd2b8eb69f4d3557f301ab9c34db9fac4ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r85NrEg+F6ozoWThMA+3iSXfVwGHqaJisv8wbRQQ47jlL2qY2f2ovh8a4LXpp2tM70HB/tqKh9MdsUaQqQpgAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T14:24:53.326925Z","bundle_sha256":"f4def8eaf8eb2cdc99876cbfe47d495a19e3e18d69cc2847c68f7eea067d52b0"}}