{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:GJKFLDSRQ2RZWGOQCAPQBSVM6O","short_pith_number":"pith:GJKFLDSR","canonical_record":{"source":{"id":"0910.4113","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-21T14:59:40Z","cross_cats_sorted":[],"title_canon_sha256":"87144d9c0fe6fa51ff27494f5bade26b3d7fa7ed3547346f5473bb8f72de6b34","abstract_canon_sha256":"41527dc990a243b058a80c540da3db48fe753533cb8562b905376f3c231fb617"},"schema_version":"1.0"},"canonical_sha256":"3254558e5186a39b19d0101f00caacf3b7609a988db85c5c0e066b989649a941","source":{"kind":"arxiv","id":"0910.4113","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4113","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4113v3","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4113","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"pith_short_12","alias_value":"GJKFLDSRQ2RZ","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GJKFLDSRQ2RZWGOQ","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GJKFLDSR","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:GJKFLDSRQ2RZWGOQCAPQBSVM6O","target":"record","payload":{"canonical_record":{"source":{"id":"0910.4113","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-21T14:59:40Z","cross_cats_sorted":[],"title_canon_sha256":"87144d9c0fe6fa51ff27494f5bade26b3d7fa7ed3547346f5473bb8f72de6b34","abstract_canon_sha256":"41527dc990a243b058a80c540da3db48fe753533cb8562b905376f3c231fb617"},"schema_version":"1.0"},"canonical_sha256":"3254558e5186a39b19d0101f00caacf3b7609a988db85c5c0e066b989649a941","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:13.140908Z","signature_b64":"C2vKqdOnPf1ZZhAyejm/cRwcEXR1ylXkX3uyoJZj0XdjIY4EYoNxbYZN3NaFvr9EhIWZBAg/qiP/iPdDBG+hDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3254558e5186a39b19d0101f00caacf3b7609a988db85c5c0e066b989649a941","last_reissued_at":"2026-05-18T02:11:13.140092Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:13.140092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.4113","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:11:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4bi+ZrOMraXF+ihtjVwbVkJONnCIcVuNO4hKpuidd5fUTy1NJ3DnbQbC7N+IgLM7VZEaY7WU+49AMbxMsm2xDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:39:39.258730Z"},"content_sha256":"aa34cceb8b08480cc0d3bae9860109ec9a9cb5f22b7a8824551bace153fe2ae1","schema_version":"1.0","event_id":"sha256:aa34cceb8b08480cc0d3bae9860109ec9a9cb5f22b7a8824551bace153fe2ae1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:GJKFLDSRQ2RZWGOQCAPQBSVM6O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Galaxy Zoo: Passive Red Spirals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Kathy Romer (Sussex), Alexander S. Szalay, Anze Slosar, Ben Crowcroft, Chris J. Lintott (Oxford), Dan Andreescu, Edward M. Edmondson, Heather C. Campbell, Isabelle Doyle, Jan vandenBerg, Karen L. Masters (ICG, Kevin Schawinski (Yale), M. Jordan Raddick, Moein Mosleh (Sussex/Leiden), Phil Murray, Portsmouth), Robert C. Nichol (ICG, Steven P. Bamford (Nottingham)","submitted_at":"2009-10-21T14:59:40Z","abstract_excerpt":"We study the spectroscopic properties and environments of red spiral galaxies found by the Galaxy Zoo project. By carefully selecting face-on, disk dominated spirals we construct a sample of truly passive disks (not dust reddened, nor dominated by old stellar populations in a bulge). As such, our red spirals represent an interesting set of possible transition objects between normal blue spirals and red early types. We use SDSS data to investigate the physical processes which could have turned these objects red without disturbing their morphology. Red spirals prefer intermediate density regimes"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4113","kind":"arxiv","version":3},"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":"2026-05-18T02:11:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"alGGsB+/l5qEa+XewRBD6OTaUekuEmCy4cyz5QAGeuabbXgnsEdgAje9Tbc1mk5y2dwkbAp/J2vdNMeweFKSCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:39:39.259076Z"},"content_sha256":"642db5089a02188226d69923058f33d79261dde3a786a9ed7a6e55f8ca51fb7c","schema_version":"1.0","event_id":"sha256:642db5089a02188226d69923058f33d79261dde3a786a9ed7a6e55f8ca51fb7c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GJKFLDSRQ2RZWGOQCAPQBSVM6O/bundle.json","state_url":"https://pith.science/pith/GJKFLDSRQ2RZWGOQCAPQBSVM6O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GJKFLDSRQ2RZWGOQCAPQBSVM6O/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":"2026-05-28T12:39:39Z","links":{"resolver":"https://pith.science/pith/GJKFLDSRQ2RZWGOQCAPQBSVM6O","bundle":"https://pith.science/pith/GJKFLDSRQ2RZWGOQCAPQBSVM6O/bundle.json","state":"https://pith.science/pith/GJKFLDSRQ2RZWGOQCAPQBSVM6O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GJKFLDSRQ2RZWGOQCAPQBSVM6O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:GJKFLDSRQ2RZWGOQCAPQBSVM6O","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":"41527dc990a243b058a80c540da3db48fe753533cb8562b905376f3c231fb617","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-21T14:59:40Z","title_canon_sha256":"87144d9c0fe6fa51ff27494f5bade26b3d7fa7ed3547346f5473bb8f72de6b34"},"schema_version":"1.0","source":{"id":"0910.4113","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4113","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4113v3","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4113","created_at":"2026-05-18T02:11:13Z"},{"alias_kind":"pith_short_12","alias_value":"GJKFLDSRQ2RZ","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GJKFLDSRQ2RZWGOQ","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GJKFLDSR","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:642db5089a02188226d69923058f33d79261dde3a786a9ed7a6e55f8ca51fb7c","target":"graph","created_at":"2026-05-18T02:11:13Z","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 study the spectroscopic properties and environments of red spiral galaxies found by the Galaxy Zoo project. By carefully selecting face-on, disk dominated spirals we construct a sample of truly passive disks (not dust reddened, nor dominated by old stellar populations in a bulge). As such, our red spirals represent an interesting set of possible transition objects between normal blue spirals and red early types. We use SDSS data to investigate the physical processes which could have turned these objects red without disturbing their morphology. Red spirals prefer intermediate density regimes","authors_text":"A. Kathy Romer (Sussex), Alexander S. Szalay, Anze Slosar, Ben Crowcroft, Chris J. Lintott (Oxford), Dan Andreescu, Edward M. Edmondson, Heather C. Campbell, Isabelle Doyle, Jan vandenBerg, Karen L. Masters (ICG, Kevin Schawinski (Yale), M. Jordan Raddick, Moein Mosleh (Sussex/Leiden), Phil Murray, Portsmouth), Robert C. Nichol (ICG, Steven P. Bamford (Nottingham)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-21T14:59:40Z","title":"Galaxy Zoo: Passive Red Spirals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4113","kind":"arxiv","version":3},"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:aa34cceb8b08480cc0d3bae9860109ec9a9cb5f22b7a8824551bace153fe2ae1","target":"record","created_at":"2026-05-18T02:11:13Z","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":"41527dc990a243b058a80c540da3db48fe753533cb8562b905376f3c231fb617","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-21T14:59:40Z","title_canon_sha256":"87144d9c0fe6fa51ff27494f5bade26b3d7fa7ed3547346f5473bb8f72de6b34"},"schema_version":"1.0","source":{"id":"0910.4113","kind":"arxiv","version":3}},"canonical_sha256":"3254558e5186a39b19d0101f00caacf3b7609a988db85c5c0e066b989649a941","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3254558e5186a39b19d0101f00caacf3b7609a988db85c5c0e066b989649a941","first_computed_at":"2026-05-18T02:11:13.140092Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:13.140092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C2vKqdOnPf1ZZhAyejm/cRwcEXR1ylXkX3uyoJZj0XdjIY4EYoNxbYZN3NaFvr9EhIWZBAg/qiP/iPdDBG+hDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:13.140908Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.4113","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa34cceb8b08480cc0d3bae9860109ec9a9cb5f22b7a8824551bace153fe2ae1","sha256:642db5089a02188226d69923058f33d79261dde3a786a9ed7a6e55f8ca51fb7c"],"state_sha256":"74cc176f309954f85ba79699ed77a8c1ce107ea794863541ba6e7790a7625198"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FWchDVY6B7cvWXwtWYzclB0X49z52+fot5r9ckp8oCu9Xx4KkRcpHsX9KNHiBbhN8tSbB+xEPwwycBlx9SttAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:39:39.261009Z","bundle_sha256":"6feca534bf31c4afe9f414c46e5bb9872ee6496296952b9ca438152dff730500"}}