{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:GDJEQU7S5F3ZYOUV4LNIIZN25K","short_pith_number":"pith:GDJEQU7S","canonical_record":{"source":{"id":"astro-ph/9505107","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-05-23T14:54:44Z","cross_cats_sorted":[],"title_canon_sha256":"65e51eddccf94fe0bce16bdc9e44c3f3150170ab3b825c3c77d047dec3409266","abstract_canon_sha256":"2fcfdbf56637caa42ed48a7361bb873b06dcb9252cee272370b5fffb52e19359"},"schema_version":"1.0"},"canonical_sha256":"30d24853f2e9779c3a95e2da8465baea89f400786ea15059adec4a3ce5380659","source":{"kind":"arxiv","id":"astro-ph/9505107","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9505107","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9505107v2","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9505107","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"pith_short_12","alias_value":"GDJEQU7S5F3Z","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"pith_short_16","alias_value":"GDJEQU7S5F3ZYOUV","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"pith_short_8","alias_value":"GDJEQU7S","created_at":"2026-07-04T15:07:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:GDJEQU7S5F3ZYOUV4LNIIZN25K","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9505107","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-05-23T14:54:44Z","cross_cats_sorted":[],"title_canon_sha256":"65e51eddccf94fe0bce16bdc9e44c3f3150170ab3b825c3c77d047dec3409266","abstract_canon_sha256":"2fcfdbf56637caa42ed48a7361bb873b06dcb9252cee272370b5fffb52e19359"},"schema_version":"1.0"},"canonical_sha256":"30d24853f2e9779c3a95e2da8465baea89f400786ea15059adec4a3ce5380659","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:07:16.208082Z","signature_b64":"QBFXdoj5LlC0L8uFbInkxR3PjGBC1nFVhK2ziz5mIB9F1j9Li87L4ntcECrDR1LBF8Y2wLPfQ/qXU20OtBtpCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30d24853f2e9779c3a95e2da8465baea89f400786ea15059adec4a3ce5380659","last_reissued_at":"2026-07-04T15:07:16.207702Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:07:16.207702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9505107","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:07:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E/zm5XgrJjSCaZmEuLZFzfXABV1PKf78E7pw5go78by7aHSMu7eu5kTnEp2iKyo9+Xa7xjX70s6UkdmUZMwYBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T16:37:30.142597Z"},"content_sha256":"a775ea44a00ae44c8d66babe1b37a0bec8130c536c446b8ca33de800a5748050","schema_version":"1.0","event_id":"sha256:a775ea44a00ae44c8d66babe1b37a0bec8130c536c446b8ca33de800a5748050"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:GDJEQU7S5F3ZYOUV4LNIIZN25K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bimodal star formation in elliptical galaxies and the enrichment of the intra-cluster medium","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. Elbaz, E.Vangioni-Flam, M. Arnaud","submitted_at":"1995-05-23T14:54:44Z","abstract_excerpt":"A detailed model of galactic evolution is proposed to explain both the iron content of the Intra-Cluster Medium (ICM) and of the ellipticals pertaining to the cluster. SNII are responsible for the production of Fe in the galaxies and of its partial ejection in the surrounding medium. A high formation rate of massive stars only ($m>3~{\\rm M_{\\sun}}$) at the very early stage of evolution of ellipticals, reminiscent of starburst galaxies, is advocated. The high rate of SNII explosions induces a powerful galactic wind, followed by a more quiescent evolution where stars are formed, with a normal In"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9505107","kind":"arxiv","version":2},"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/astro-ph/9505107/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":"2026-07-04T15:07:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Xc0Q5MuZSNWXklc98DfszXoLo2cK7+VrOW5dogJAnNNpu9j4v466sIYckrFOAIr/TqHGyltXwCwSpCbunMADQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T16:37:30.143622Z"},"content_sha256":"f8df3ee8e56e2bc71d0d969127848fe9bfde85b2c2c1fce6ddc51fad52eb896e","schema_version":"1.0","event_id":"sha256:f8df3ee8e56e2bc71d0d969127848fe9bfde85b2c2c1fce6ddc51fad52eb896e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GDJEQU7S5F3ZYOUV4LNIIZN25K/bundle.json","state_url":"https://pith.science/pith/GDJEQU7S5F3ZYOUV4LNIIZN25K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GDJEQU7S5F3ZYOUV4LNIIZN25K/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":"2026-08-06T16:37:30Z","links":{"resolver":"https://pith.science/pith/GDJEQU7S5F3ZYOUV4LNIIZN25K","bundle":"https://pith.science/pith/GDJEQU7S5F3ZYOUV4LNIIZN25K/bundle.json","state":"https://pith.science/pith/GDJEQU7S5F3ZYOUV4LNIIZN25K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GDJEQU7S5F3ZYOUV4LNIIZN25K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:GDJEQU7S5F3ZYOUV4LNIIZN25K","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":"2fcfdbf56637caa42ed48a7361bb873b06dcb9252cee272370b5fffb52e19359","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-05-23T14:54:44Z","title_canon_sha256":"65e51eddccf94fe0bce16bdc9e44c3f3150170ab3b825c3c77d047dec3409266"},"schema_version":"1.0","source":{"id":"astro-ph/9505107","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9505107","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9505107v2","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9505107","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"pith_short_12","alias_value":"GDJEQU7S5F3Z","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"pith_short_16","alias_value":"GDJEQU7S5F3ZYOUV","created_at":"2026-07-04T15:07:16Z"},{"alias_kind":"pith_short_8","alias_value":"GDJEQU7S","created_at":"2026-07-04T15:07:16Z"}],"graph_snapshots":[{"event_id":"sha256:f8df3ee8e56e2bc71d0d969127848fe9bfde85b2c2c1fce6ddc51fad52eb896e","target":"graph","created_at":"2026-07-04T15:07:16Z","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/astro-ph/9505107/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A detailed model of galactic evolution is proposed to explain both the iron content of the Intra-Cluster Medium (ICM) and of the ellipticals pertaining to the cluster. SNII are responsible for the production of Fe in the galaxies and of its partial ejection in the surrounding medium. A high formation rate of massive stars only ($m>3~{\\rm M_{\\sun}}$) at the very early stage of evolution of ellipticals, reminiscent of starburst galaxies, is advocated. The high rate of SNII explosions induces a powerful galactic wind, followed by a more quiescent evolution where stars are formed, with a normal In","authors_text":"D. Elbaz, E.Vangioni-Flam, M. Arnaud","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1995-05-23T14:54:44Z","title":"Bimodal star formation in elliptical galaxies and the enrichment of the intra-cluster medium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9505107","kind":"arxiv","version":2},"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:a775ea44a00ae44c8d66babe1b37a0bec8130c536c446b8ca33de800a5748050","target":"record","created_at":"2026-07-04T15:07:16Z","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":"2fcfdbf56637caa42ed48a7361bb873b06dcb9252cee272370b5fffb52e19359","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-05-23T14:54:44Z","title_canon_sha256":"65e51eddccf94fe0bce16bdc9e44c3f3150170ab3b825c3c77d047dec3409266"},"schema_version":"1.0","source":{"id":"astro-ph/9505107","kind":"arxiv","version":2}},"canonical_sha256":"30d24853f2e9779c3a95e2da8465baea89f400786ea15059adec4a3ce5380659","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30d24853f2e9779c3a95e2da8465baea89f400786ea15059adec4a3ce5380659","first_computed_at":"2026-07-04T15:07:16.207702Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:07:16.207702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QBFXdoj5LlC0L8uFbInkxR3PjGBC1nFVhK2ziz5mIB9F1j9Li87L4ntcECrDR1LBF8Y2wLPfQ/qXU20OtBtpCg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:07:16.208082Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9505107","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a775ea44a00ae44c8d66babe1b37a0bec8130c536c446b8ca33de800a5748050","sha256:f8df3ee8e56e2bc71d0d969127848fe9bfde85b2c2c1fce6ddc51fad52eb896e"],"state_sha256":"b147ca7e37dff902ab4f5ef0058ec6b1412daa1bc637e2189c18993a69559f9b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y+6GFnZSu460PTBr9uMZwXUSKQD0VxAVBpaFWrjhvymUDo3yU5DmVp7z94NQICdJ0Eahifvoaqp7B0HBi6uDCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T16:37:30.148983Z","bundle_sha256":"70a671faf2f2cdc2c86ab16e5f034e1c361b7e3c7637204422860234ede5ee5b"}}