{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:LXZEW7P26S6XXDNMHB3RBTIII4","short_pith_number":"pith:LXZEW7P2","canonical_record":{"source":{"id":"0903.5057","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-03-29T15:43:18Z","cross_cats_sorted":[],"title_canon_sha256":"304d2b89844988ca7700e2789c0fff4aa625527b1fcd4d814b581f6147f6b6dd","abstract_canon_sha256":"8ea6d35be543e453db4444f38fd84a478c6773a09ede5b013e23a9ffbbfcc3a0"},"schema_version":"1.0"},"canonical_sha256":"5df24b7dfaf4bd7b8dac387710cd0847006274665bf7e715cc8021bb5d7bc0f1","source":{"kind":"arxiv","id":"0903.5057","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.5057","created_at":"2026-05-18T02:14:18Z"},{"alias_kind":"arxiv_version","alias_value":"0903.5057v3","created_at":"2026-05-18T02:14:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.5057","created_at":"2026-05-18T02:14:18Z"},{"alias_kind":"pith_short_12","alias_value":"LXZEW7P26S6X","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"LXZEW7P26S6XXDNM","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"LXZEW7P2","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:LXZEW7P26S6XXDNMHB3RBTIII4","target":"record","payload":{"canonical_record":{"source":{"id":"0903.5057","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-03-29T15:43:18Z","cross_cats_sorted":[],"title_canon_sha256":"304d2b89844988ca7700e2789c0fff4aa625527b1fcd4d814b581f6147f6b6dd","abstract_canon_sha256":"8ea6d35be543e453db4444f38fd84a478c6773a09ede5b013e23a9ffbbfcc3a0"},"schema_version":"1.0"},"canonical_sha256":"5df24b7dfaf4bd7b8dac387710cd0847006274665bf7e715cc8021bb5d7bc0f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:18.732969Z","signature_b64":"v3P+4xIimTILQBIs1DsrG23cGWX+VI+HFZwE28jRKuQ5NpCikIycBNbQDTryZF1qYOgs9aOfC3UgmVbgMgL/AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5df24b7dfaf4bd7b8dac387710cd0847006274665bf7e715cc8021bb5d7bc0f1","last_reissued_at":"2026-05-18T02:14:18.732270Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:18.732270Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.5057","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":"2026-05-18T02:14:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EJqCTRKD0aP7f7hOvayiMEVkSbJIFeknNqiBUFOXgpT7x6r85ycyOypej0Xu0IrzImV3PI0bYdR1ZbmKEdHsCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:44:31.639193Z"},"content_sha256":"c46f5b6e19e11bee7478592a1c1fb084c706bcf07f4240553906154a62e82117","schema_version":"1.0","event_id":"sha256:c46f5b6e19e11bee7478592a1c1fb084c706bcf07f4240553906154a62e82117"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:LXZEW7P26S6XXDNMHB3RBTIII4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Galaxy Zoo: The properties of merging galaxies in the nearby Universe - local environments, colours, masses, star-formation rates and AGN activity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Slosar, A. S. Szalay, C. J. Lintott, D. Andreescu, D. Thomas, D. W. Darg, J. Silk, J. Vandenberg, K. Schawinski, M. J. Raddick, M. Sarzi, P. Murray, R. C. Nichol, S. Bamford, S. Kaviraj","submitted_at":"2009-03-29T15:43:18Z","abstract_excerpt":"Following the study of Darg et al. (2009; hereafter D09a) we explore the environments, optical colours, stellar masses, star formation and AGN activity in a sample of 3003 pairs of merging galaxies drawn from the SDSS using visual classifications from the Galaxy Zoo project. While D09a found that the spiral-to-elliptical ratio in (major) mergers appeared higher than that of the global galaxy population, no significant differences are found between the environmental distributions of mergers and a randomly selected control sample. This makes the high occurrence of spirals in mergers unlikely to "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.5057","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":"2026-05-18T02:14:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R9lTk4qWIUrrtkyGg3wFMRBz4URY+qQPvaYgFtYn6ZlEpB/RSPlRTjdRgyRUk2cq+bXJxhhWINv887qHR9esCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:44:31.639566Z"},"content_sha256":"54dde31753eb5bc10d44cfbe593153f5728575c6adb599d40c367f53524e6b00","schema_version":"1.0","event_id":"sha256:54dde31753eb5bc10d44cfbe593153f5728575c6adb599d40c367f53524e6b00"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LXZEW7P26S6XXDNMHB3RBTIII4/bundle.json","state_url":"https://pith.science/pith/LXZEW7P26S6XXDNMHB3RBTIII4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LXZEW7P26S6XXDNMHB3RBTIII4/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":"2026-06-04T12:44:31Z","links":{"resolver":"https://pith.science/pith/LXZEW7P26S6XXDNMHB3RBTIII4","bundle":"https://pith.science/pith/LXZEW7P26S6XXDNMHB3RBTIII4/bundle.json","state":"https://pith.science/pith/LXZEW7P26S6XXDNMHB3RBTIII4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LXZEW7P26S6XXDNMHB3RBTIII4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:LXZEW7P26S6XXDNMHB3RBTIII4","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":"8ea6d35be543e453db4444f38fd84a478c6773a09ede5b013e23a9ffbbfcc3a0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-03-29T15:43:18Z","title_canon_sha256":"304d2b89844988ca7700e2789c0fff4aa625527b1fcd4d814b581f6147f6b6dd"},"schema_version":"1.0","source":{"id":"0903.5057","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.5057","created_at":"2026-05-18T02:14:18Z"},{"alias_kind":"arxiv_version","alias_value":"0903.5057v3","created_at":"2026-05-18T02:14:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.5057","created_at":"2026-05-18T02:14:18Z"},{"alias_kind":"pith_short_12","alias_value":"LXZEW7P26S6X","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"LXZEW7P26S6XXDNM","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"LXZEW7P2","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:54dde31753eb5bc10d44cfbe593153f5728575c6adb599d40c367f53524e6b00","target":"graph","created_at":"2026-05-18T02:14:18Z","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":"Following the study of Darg et al. (2009; hereafter D09a) we explore the environments, optical colours, stellar masses, star formation and AGN activity in a sample of 3003 pairs of merging galaxies drawn from the SDSS using visual classifications from the Galaxy Zoo project. While D09a found that the spiral-to-elliptical ratio in (major) mergers appeared higher than that of the global galaxy population, no significant differences are found between the environmental distributions of mergers and a randomly selected control sample. This makes the high occurrence of spirals in mergers unlikely to ","authors_text":"A. Slosar, A. S. Szalay, C. J. Lintott, D. Andreescu, D. Thomas, D. W. Darg, J. Silk, J. Vandenberg, K. Schawinski, M. J. Raddick, M. Sarzi, P. Murray, R. C. Nichol, S. Bamford, S. Kaviraj","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-03-29T15:43:18Z","title":"Galaxy Zoo: The properties of merging galaxies in the nearby Universe - local environments, colours, masses, star-formation rates and AGN activity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.5057","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:c46f5b6e19e11bee7478592a1c1fb084c706bcf07f4240553906154a62e82117","target":"record","created_at":"2026-05-18T02:14:18Z","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":"8ea6d35be543e453db4444f38fd84a478c6773a09ede5b013e23a9ffbbfcc3a0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-03-29T15:43:18Z","title_canon_sha256":"304d2b89844988ca7700e2789c0fff4aa625527b1fcd4d814b581f6147f6b6dd"},"schema_version":"1.0","source":{"id":"0903.5057","kind":"arxiv","version":3}},"canonical_sha256":"5df24b7dfaf4bd7b8dac387710cd0847006274665bf7e715cc8021bb5d7bc0f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5df24b7dfaf4bd7b8dac387710cd0847006274665bf7e715cc8021bb5d7bc0f1","first_computed_at":"2026-05-18T02:14:18.732270Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:18.732270Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v3P+4xIimTILQBIs1DsrG23cGWX+VI+HFZwE28jRKuQ5NpCikIycBNbQDTryZF1qYOgs9aOfC3UgmVbgMgL/AA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:18.732969Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.5057","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c46f5b6e19e11bee7478592a1c1fb084c706bcf07f4240553906154a62e82117","sha256:54dde31753eb5bc10d44cfbe593153f5728575c6adb599d40c367f53524e6b00"],"state_sha256":"a569649a239ad4a75fbe6ea57043a8cc1223e5f7c456fee51a3c42d9643e6b9a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z2FLZc7LMTMkl9Dvf0QffRcICgUZikE/QKCrMvSX/FaCXCzpmbg6wxQyxIhRP6pqwWKnJVngNSVQDiIN++CRCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T12:44:31.641511Z","bundle_sha256":"1c12c634f69467b9263a918723b33ffcabea3df8b3a6bbf269215aa0133c1f41"}}