{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:E7KQKLGIXRYNY7SDE4RLGJX6LK","short_pith_number":"pith:E7KQKLGI","canonical_record":{"source":{"id":"1306.0285","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-03T03:19:16Z","cross_cats_sorted":[],"title_canon_sha256":"ce9d102132bc00ee98a64b90cab8c09b786f98be8d2908a95cb8516902e43e71","abstract_canon_sha256":"3b4f70212d11f1c685c61330603089a1383a369057c97d0d773600e3eac0212e"},"schema_version":"1.0"},"canonical_sha256":"27d5052cc8bc70dc7e432722b326fe5ab9a206c6ab4a9e95cd4d8a8cc06438b5","source":{"kind":"arxiv","id":"1306.0285","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.0285","created_at":"2026-05-18T01:49:38Z"},{"alias_kind":"arxiv_version","alias_value":"1306.0285v2","created_at":"2026-05-18T01:49:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.0285","created_at":"2026-05-18T01:49:38Z"},{"alias_kind":"pith_short_12","alias_value":"E7KQKLGIXRYN","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"E7KQKLGIXRYNY7SD","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"E7KQKLGI","created_at":"2026-05-18T12:27:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:E7KQKLGIXRYNY7SDE4RLGJX6LK","target":"record","payload":{"canonical_record":{"source":{"id":"1306.0285","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-03T03:19:16Z","cross_cats_sorted":[],"title_canon_sha256":"ce9d102132bc00ee98a64b90cab8c09b786f98be8d2908a95cb8516902e43e71","abstract_canon_sha256":"3b4f70212d11f1c685c61330603089a1383a369057c97d0d773600e3eac0212e"},"schema_version":"1.0"},"canonical_sha256":"27d5052cc8bc70dc7e432722b326fe5ab9a206c6ab4a9e95cd4d8a8cc06438b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:49:38.708038Z","signature_b64":"VY6DphRZoxOzuRgNeX/hr8utzaln3S4DXoRvZ4AEJYf/YoI/2lP2E73P0zweXt9wQAhanbroXc+/BGKOl1WtCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"27d5052cc8bc70dc7e432722b326fe5ab9a206c6ab4a9e95cd4d8a8cc06438b5","last_reissued_at":"2026-05-18T01:49:38.707479Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:49:38.707479Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1306.0285","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":"2026-05-18T01:49:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9kFd38saoJT8p3Q1Ci3vtW887qQdf5PDQi3/GfPOcCadF0BA1jns313AOkD29MeroXLdA66xDBT9aUzWbdmJDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T17:17:35.803872Z"},"content_sha256":"ab4effd517a51ff113641560861919d89173f38cf675dc360b29e0706043a0bd","schema_version":"1.0","event_id":"sha256:ab4effd517a51ff113641560861919d89173f38cf675dc360b29e0706043a0bd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:E7KQKLGIXRYNY7SDE4RLGJX6LK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Calibrating the fundamental plane with SDSS DR8 data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Christoph Saulder, Igor V. Chilingarian, Steffen Mieske, Werner W. Zeilinger","submitted_at":"2013-06-03T03:19:16Z","abstract_excerpt":"We present a calibration of the fundamental plane using SDSS Data Release 8. We analysed about 93000 elliptical galaxies up to $z<0.2$, the largest sample used for the calibration of the fundamental plane so far. We incorporated up-to-date K-corrections and used GalaxyZoo data to classify the galaxies in our sample. We derived independent fundamental plane fits in all five Sloan filters u, g, r, i and z. A direct fit using a volume-weighted least-squares method was applied to obtain the coefficients of the fundamental plane, which implicitly corrects for the Malmquist bias. We achieved an accu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.0285","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":""},"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":"2026-05-18T01:49:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+g1naUBs75YCt7YEMNPK+yF4yYWXPPYCql0qQN+1ZMI8Lzh0GyKuKPbUf6LSpApSaV1knncojd5hYpL+OBXSAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T17:17:35.804209Z"},"content_sha256":"e2e8e0e3d0e263540914efeda263fa5759351e014a06c3ca731d0ae31dcb1e30","schema_version":"1.0","event_id":"sha256:e2e8e0e3d0e263540914efeda263fa5759351e014a06c3ca731d0ae31dcb1e30"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E7KQKLGIXRYNY7SDE4RLGJX6LK/bundle.json","state_url":"https://pith.science/pith/E7KQKLGIXRYNY7SDE4RLGJX6LK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E7KQKLGIXRYNY7SDE4RLGJX6LK/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":"2026-06-28T17:17:35Z","links":{"resolver":"https://pith.science/pith/E7KQKLGIXRYNY7SDE4RLGJX6LK","bundle":"https://pith.science/pith/E7KQKLGIXRYNY7SDE4RLGJX6LK/bundle.json","state":"https://pith.science/pith/E7KQKLGIXRYNY7SDE4RLGJX6LK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E7KQKLGIXRYNY7SDE4RLGJX6LK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:E7KQKLGIXRYNY7SDE4RLGJX6LK","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":"3b4f70212d11f1c685c61330603089a1383a369057c97d0d773600e3eac0212e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-03T03:19:16Z","title_canon_sha256":"ce9d102132bc00ee98a64b90cab8c09b786f98be8d2908a95cb8516902e43e71"},"schema_version":"1.0","source":{"id":"1306.0285","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.0285","created_at":"2026-05-18T01:49:38Z"},{"alias_kind":"arxiv_version","alias_value":"1306.0285v2","created_at":"2026-05-18T01:49:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.0285","created_at":"2026-05-18T01:49:38Z"},{"alias_kind":"pith_short_12","alias_value":"E7KQKLGIXRYN","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"E7KQKLGIXRYNY7SD","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"E7KQKLGI","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:e2e8e0e3d0e263540914efeda263fa5759351e014a06c3ca731d0ae31dcb1e30","target":"graph","created_at":"2026-05-18T01:49:38Z","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 calibration of the fundamental plane using SDSS Data Release 8. We analysed about 93000 elliptical galaxies up to $z<0.2$, the largest sample used for the calibration of the fundamental plane so far. We incorporated up-to-date K-corrections and used GalaxyZoo data to classify the galaxies in our sample. We derived independent fundamental plane fits in all five Sloan filters u, g, r, i and z. A direct fit using a volume-weighted least-squares method was applied to obtain the coefficients of the fundamental plane, which implicitly corrects for the Malmquist bias. We achieved an accu","authors_text":"Christoph Saulder, Igor V. Chilingarian, Steffen Mieske, Werner W. Zeilinger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-03T03:19:16Z","title":"Calibrating the fundamental plane with SDSS DR8 data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.0285","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:ab4effd517a51ff113641560861919d89173f38cf675dc360b29e0706043a0bd","target":"record","created_at":"2026-05-18T01:49:38Z","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":"3b4f70212d11f1c685c61330603089a1383a369057c97d0d773600e3eac0212e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-06-03T03:19:16Z","title_canon_sha256":"ce9d102132bc00ee98a64b90cab8c09b786f98be8d2908a95cb8516902e43e71"},"schema_version":"1.0","source":{"id":"1306.0285","kind":"arxiv","version":2}},"canonical_sha256":"27d5052cc8bc70dc7e432722b326fe5ab9a206c6ab4a9e95cd4d8a8cc06438b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"27d5052cc8bc70dc7e432722b326fe5ab9a206c6ab4a9e95cd4d8a8cc06438b5","first_computed_at":"2026-05-18T01:49:38.707479Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:49:38.707479Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VY6DphRZoxOzuRgNeX/hr8utzaln3S4DXoRvZ4AEJYf/YoI/2lP2E73P0zweXt9wQAhanbroXc+/BGKOl1WtCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:49:38.708038Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.0285","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ab4effd517a51ff113641560861919d89173f38cf675dc360b29e0706043a0bd","sha256:e2e8e0e3d0e263540914efeda263fa5759351e014a06c3ca731d0ae31dcb1e30"],"state_sha256":"17f71d78c244e3f44c4f8185b1bdfdb4b1f5d0ebe1b46b1953d5a25c62ea2a8d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hfPIDn4vMsgtNw932T9itHylXi4LXgdcOqFZ2f1cXKjh9P90QjVTDgPZap9nfvgcNj4jHtTM7Q1UNiC54VUdDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T17:17:35.806081Z","bundle_sha256":"583f6ca6b68af6de4bfa19b935263162833903aec645849c7c35b8e3e775fbb0"}}