{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:7B7XRSHIXKAT2VWHX5IR4SZ7DB","short_pith_number":"pith:7B7XRSHI","canonical_record":{"source":{"id":"2005.11880","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-05-25T01:17:16Z","cross_cats_sorted":[],"title_canon_sha256":"0a80455cc59a095b2333940e8812d2df32a020fb20d4caf5378ba76fb29fc06c","abstract_canon_sha256":"3419527b73bfc9e66372fbf688633bdda23feff33253d206ef32f2b99e6bbc12"},"schema_version":"1.0"},"canonical_sha256":"f87f78c8e8ba813d56c7bf511e4b3f1846aacb7ae3948b861bb05c93fea67a41","source":{"kind":"arxiv","id":"2005.11880","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.11880","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"arxiv_version","alias_value":"2005.11880v1","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.11880","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"pith_short_12","alias_value":"7B7XRSHIXKAT","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"pith_short_16","alias_value":"7B7XRSHIXKAT2VWH","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"pith_short_8","alias_value":"7B7XRSHI","created_at":"2026-07-05T01:05:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:7B7XRSHIXKAT2VWHX5IR4SZ7DB","target":"record","payload":{"canonical_record":{"source":{"id":"2005.11880","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-05-25T01:17:16Z","cross_cats_sorted":[],"title_canon_sha256":"0a80455cc59a095b2333940e8812d2df32a020fb20d4caf5378ba76fb29fc06c","abstract_canon_sha256":"3419527b73bfc9e66372fbf688633bdda23feff33253d206ef32f2b99e6bbc12"},"schema_version":"1.0"},"canonical_sha256":"f87f78c8e8ba813d56c7bf511e4b3f1846aacb7ae3948b861bb05c93fea67a41","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:05:28.765394Z","signature_b64":"oudiPoKHuJdPl5sfnIeSLMSWGaPdfGXUbIW4BkgVEfpBvp5QAgg6BxLPVwDWQN1j8i/CxNjLK+tfs6JPz6fpAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f87f78c8e8ba813d56c7bf511e4b3f1846aacb7ae3948b861bb05c93fea67a41","last_reissued_at":"2026-07-05T01:05:28.764921Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:05:28.764921Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.11880","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":"2026-07-05T01:05:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qjpZ9kvAW0UreFRjTU5uwM3+Ry8KHA9UuTR247wEodMtDDB+YyE/NanpOxs6K3ieLDYK4u0mmpp+lH55gw1BCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T21:00:17.185380Z"},"content_sha256":"4ce27145fc83a17ead94d908d5965eb6a693d1da41ffeb92db729a9d8ef05b19","schema_version":"1.0","event_id":"sha256:4ce27145fc83a17ead94d908d5965eb6a693d1da41ffeb92db729a9d8ef05b19"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:7B7XRSHIXKAT2VWHX5IR4SZ7DB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A giant galaxy in the young Universe with a massive ring","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ahmed Elagali, Brent A. Groves, Caroline M. S. Straatman, Claudia del P. Lagos, Deanne B. Fisher, Glenn G. Kacprzak, Ivo Labbe, Jonathan H. Cohn, Karl Glazebrook, Kenneth C. Freeman, Kim-Vy H. Tran, Lee R. Spitler, Leo Y. Alcorn, Sarah M. Sweet, Tiantian Yuan","submitted_at":"2020-05-25T01:17:16Z","abstract_excerpt":"In the local (redshift z~0) Universe, collisional ring galaxies make up only ~0.01% of galaxies and are formed by head-on galactic collisions that trigger radially propagating density waves. These striking systems provide key snapshots for dissecting galactic disks and are studied extensively in the local Universe. However, not much is known about distant (z>0.1) collisional rings. Here we present a detailed study of a ring galaxy at a look-back time of 10.8 Gyr (z=2.19). Compared with our Milky Way, this galaxy has a similar stellar mass, but has a stellar half-light radius that is 1.5-2.2 ti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.11880","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2005.11880/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":"2026-07-05T01:05:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Otw7CiS68Alk+ic9PDaggKfvxCs6K5PxYk0wBKxuKIwxdMkbWu/qv5RMEsoMS0gVsn59dHOIWua8odlYSi/sCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T21:00:17.185889Z"},"content_sha256":"bacfc3858cdcac54f096455e20eeb17c2f68749a3eeecb65b087dceddfd68883","schema_version":"1.0","event_id":"sha256:bacfc3858cdcac54f096455e20eeb17c2f68749a3eeecb65b087dceddfd68883"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7B7XRSHIXKAT2VWHX5IR4SZ7DB/bundle.json","state_url":"https://pith.science/pith/7B7XRSHIXKAT2VWHX5IR4SZ7DB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7B7XRSHIXKAT2VWHX5IR4SZ7DB/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":"2026-08-04T21:00:17Z","links":{"resolver":"https://pith.science/pith/7B7XRSHIXKAT2VWHX5IR4SZ7DB","bundle":"https://pith.science/pith/7B7XRSHIXKAT2VWHX5IR4SZ7DB/bundle.json","state":"https://pith.science/pith/7B7XRSHIXKAT2VWHX5IR4SZ7DB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7B7XRSHIXKAT2VWHX5IR4SZ7DB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:7B7XRSHIXKAT2VWHX5IR4SZ7DB","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":"3419527b73bfc9e66372fbf688633bdda23feff33253d206ef32f2b99e6bbc12","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-05-25T01:17:16Z","title_canon_sha256":"0a80455cc59a095b2333940e8812d2df32a020fb20d4caf5378ba76fb29fc06c"},"schema_version":"1.0","source":{"id":"2005.11880","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.11880","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"arxiv_version","alias_value":"2005.11880v1","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.11880","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"pith_short_12","alias_value":"7B7XRSHIXKAT","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"pith_short_16","alias_value":"7B7XRSHIXKAT2VWH","created_at":"2026-07-05T01:05:28Z"},{"alias_kind":"pith_short_8","alias_value":"7B7XRSHI","created_at":"2026-07-05T01:05:28Z"}],"graph_snapshots":[{"event_id":"sha256:bacfc3858cdcac54f096455e20eeb17c2f68749a3eeecb65b087dceddfd68883","target":"graph","created_at":"2026-07-05T01:05:28Z","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/2005.11880/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the local (redshift z~0) Universe, collisional ring galaxies make up only ~0.01% of galaxies and are formed by head-on galactic collisions that trigger radially propagating density waves. These striking systems provide key snapshots for dissecting galactic disks and are studied extensively in the local Universe. However, not much is known about distant (z>0.1) collisional rings. Here we present a detailed study of a ring galaxy at a look-back time of 10.8 Gyr (z=2.19). Compared with our Milky Way, this galaxy has a similar stellar mass, but has a stellar half-light radius that is 1.5-2.2 ti","authors_text":"Ahmed Elagali, Brent A. Groves, Caroline M. S. Straatman, Claudia del P. Lagos, Deanne B. Fisher, Glenn G. Kacprzak, Ivo Labbe, Jonathan H. Cohn, Karl Glazebrook, Kenneth C. Freeman, Kim-Vy H. Tran, Lee R. Spitler, Leo Y. Alcorn, Sarah M. Sweet, Tiantian Yuan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-05-25T01:17:16Z","title":"A giant galaxy in the young Universe with a massive ring"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.11880","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":"sha256:4ce27145fc83a17ead94d908d5965eb6a693d1da41ffeb92db729a9d8ef05b19","target":"record","created_at":"2026-07-05T01:05:28Z","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":"3419527b73bfc9e66372fbf688633bdda23feff33253d206ef32f2b99e6bbc12","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-05-25T01:17:16Z","title_canon_sha256":"0a80455cc59a095b2333940e8812d2df32a020fb20d4caf5378ba76fb29fc06c"},"schema_version":"1.0","source":{"id":"2005.11880","kind":"arxiv","version":1}},"canonical_sha256":"f87f78c8e8ba813d56c7bf511e4b3f1846aacb7ae3948b861bb05c93fea67a41","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f87f78c8e8ba813d56c7bf511e4b3f1846aacb7ae3948b861bb05c93fea67a41","first_computed_at":"2026-07-05T01:05:28.764921Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:05:28.764921Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oudiPoKHuJdPl5sfnIeSLMSWGaPdfGXUbIW4BkgVEfpBvp5QAgg6BxLPVwDWQN1j8i/CxNjLK+tfs6JPz6fpAw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:05:28.765394Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.11880","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4ce27145fc83a17ead94d908d5965eb6a693d1da41ffeb92db729a9d8ef05b19","sha256:bacfc3858cdcac54f096455e20eeb17c2f68749a3eeecb65b087dceddfd68883"],"state_sha256":"47534ba229871100d9d7a4f7b3d2f40b4095a428e65acb32f1abe7ade630a48d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9OlmsmXiTSF38T313SfZ/vDzXiRIt/IniBAgRI0khpDfmwQCXUNHxyWBEDHoAYghWsbky4jOP5AWnM0J4VqDBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T21:00:17.190243Z","bundle_sha256":"fec0916326eec8e1581507b59c50def5f3f8bc6afcc5db0d0418d7666bed0b81"}}