{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:XGV7LALT5QFSMS3MX4QYQQFP3F","short_pith_number":"pith:XGV7LALT","canonical_record":{"source":{"id":"0910.2351","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-13T10:11:34Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"66a52c6bed06368a59cedc8444e4c6e9d0382ffb531db28cbc54cc056a284c87","abstract_canon_sha256":"e4a9e3b2308111c18cfc687ad932be6a6420a206c36515fdc30e6542de5c8563"},"schema_version":"1.0"},"canonical_sha256":"b9abf58173ec0b264b6cbf218840afd96b205460ddfd01e55f32aeabdc56cd2d","source":{"kind":"arxiv","id":"0910.2351","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.2351","created_at":"2026-05-18T02:34:19Z"},{"alias_kind":"arxiv_version","alias_value":"0910.2351v2","created_at":"2026-05-18T02:34:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.2351","created_at":"2026-05-18T02:34:19Z"},{"alias_kind":"pith_short_12","alias_value":"XGV7LALT5QFS","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"XGV7LALT5QFSMS3M","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"XGV7LALT","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:XGV7LALT5QFSMS3MX4QYQQFP3F","target":"record","payload":{"canonical_record":{"source":{"id":"0910.2351","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-13T10:11:34Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"66a52c6bed06368a59cedc8444e4c6e9d0382ffb531db28cbc54cc056a284c87","abstract_canon_sha256":"e4a9e3b2308111c18cfc687ad932be6a6420a206c36515fdc30e6542de5c8563"},"schema_version":"1.0"},"canonical_sha256":"b9abf58173ec0b264b6cbf218840afd96b205460ddfd01e55f32aeabdc56cd2d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:19.097161Z","signature_b64":"uasndsNn+O8Pw851Z1idKafoRjh/YpXqZaiGB7l7XNjYKlthSOfiVE5UouWGJ4Xu+7vJP0c93dxPGilGwrxqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9abf58173ec0b264b6cbf218840afd96b205460ddfd01e55f32aeabdc56cd2d","last_reissued_at":"2026-05-18T02:34:19.096661Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:19.096661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.2351","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":"2026-05-18T02:34:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I+8yui1unAVgv2ZTFxuOPhi81vWG6CAmGSnlxFmsKBDmVID6+51X/g31ZlavrEYVSEoJXdqAH+30cyPi3toiBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T18:52:41.770449Z"},"content_sha256":"7afa9d75faa8cbe2d0093fac91f3282697176afd65b6d4083a7dcfff1f0eab9d","schema_version":"1.0","event_id":"sha256:7afa9d75faa8cbe2d0093fac91f3282697176afd65b6d4083a7dcfff1f0eab9d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:XGV7LALT5QFSMS3MX4QYQQFP3F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tidal Dwarf Galaxies around a Post-merger Galaxy, NGC 4922","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Barry F. Madore, Chang H. Ree, David Schiminovich, D. Christopher Martin, Hyunjin Jeong, Ignacio Ferreras, Jang-Hyun Park, Jennifer M. Lotz, Karl Foster, Knut A. G. Olsen, Mark Dickinson, Mark Seibert, Patrick Morrissey, Peter G. Friendman, Sukyoung K. Yi, Susan G. Neff, Sydney Barnes, Ted K. Wyder, Tim Conrow, Todd Small, Tom A. Barlow, Young-Wook Lee, Yun-Kyeong Sheen","submitted_at":"2009-10-13T10:11:34Z","abstract_excerpt":"One possible channel for the formation of dwarf galaxies involves birth in the tidal tails of interacting galaxies. We report the detection of a bright UV tidal tail and several young tidal dwarf galaxy candidates in the post-merger galaxy NGC 4922 in the Coma cluster. Based on a two-component population model (combining young and old stellar populations), we find that the light of tidal tail predominantly comes from young stars (a few Myr old). The Galaxy Evolution Explorer (GALEX) ultraviolet data played a critical role in the parameter (age and mass) estimation. Our stellar mass estimates o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.2351","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":"2026-05-18T02:34:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aCdefXX75SRuhV1y+IaPKXEUdbVevBxJQAN6fT/mt0IrHVBdhZct67N9vB5Udzn9Opz0N1/c3goN8B/XKycPAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T18:52:41.771191Z"},"content_sha256":"83368d0d099fb4d678d283fa3e76daf9ddaded3650b14cbad1c3413d39d37b21","schema_version":"1.0","event_id":"sha256:83368d0d099fb4d678d283fa3e76daf9ddaded3650b14cbad1c3413d39d37b21"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XGV7LALT5QFSMS3MX4QYQQFP3F/bundle.json","state_url":"https://pith.science/pith/XGV7LALT5QFSMS3MX4QYQQFP3F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XGV7LALT5QFSMS3MX4QYQQFP3F/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":"2026-05-18T18:52:41Z","links":{"resolver":"https://pith.science/pith/XGV7LALT5QFSMS3MX4QYQQFP3F","bundle":"https://pith.science/pith/XGV7LALT5QFSMS3MX4QYQQFP3F/bundle.json","state":"https://pith.science/pith/XGV7LALT5QFSMS3MX4QYQQFP3F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XGV7LALT5QFSMS3MX4QYQQFP3F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:XGV7LALT5QFSMS3MX4QYQQFP3F","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":"e4a9e3b2308111c18cfc687ad932be6a6420a206c36515fdc30e6542de5c8563","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-13T10:11:34Z","title_canon_sha256":"66a52c6bed06368a59cedc8444e4c6e9d0382ffb531db28cbc54cc056a284c87"},"schema_version":"1.0","source":{"id":"0910.2351","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.2351","created_at":"2026-05-18T02:34:19Z"},{"alias_kind":"arxiv_version","alias_value":"0910.2351v2","created_at":"2026-05-18T02:34:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.2351","created_at":"2026-05-18T02:34:19Z"},{"alias_kind":"pith_short_12","alias_value":"XGV7LALT5QFS","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"XGV7LALT5QFSMS3M","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"XGV7LALT","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:83368d0d099fb4d678d283fa3e76daf9ddaded3650b14cbad1c3413d39d37b21","target":"graph","created_at":"2026-05-18T02:34:19Z","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":"One possible channel for the formation of dwarf galaxies involves birth in the tidal tails of interacting galaxies. We report the detection of a bright UV tidal tail and several young tidal dwarf galaxy candidates in the post-merger galaxy NGC 4922 in the Coma cluster. Based on a two-component population model (combining young and old stellar populations), we find that the light of tidal tail predominantly comes from young stars (a few Myr old). The Galaxy Evolution Explorer (GALEX) ultraviolet data played a critical role in the parameter (age and mass) estimation. Our stellar mass estimates o","authors_text":"Barry F. Madore, Chang H. Ree, David Schiminovich, D. Christopher Martin, Hyunjin Jeong, Ignacio Ferreras, Jang-Hyun Park, Jennifer M. Lotz, Karl Foster, Knut A. G. Olsen, Mark Dickinson, Mark Seibert, Patrick Morrissey, Peter G. Friendman, Sukyoung K. Yi, Susan G. Neff, Sydney Barnes, Ted K. Wyder, Tim Conrow, Todd Small, Tom A. Barlow, Young-Wook Lee, Yun-Kyeong Sheen","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-13T10:11:34Z","title":"Tidal Dwarf Galaxies around a Post-merger Galaxy, NGC 4922"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.2351","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":"sha256:7afa9d75faa8cbe2d0093fac91f3282697176afd65b6d4083a7dcfff1f0eab9d","target":"record","created_at":"2026-05-18T02:34:19Z","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":"e4a9e3b2308111c18cfc687ad932be6a6420a206c36515fdc30e6542de5c8563","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-13T10:11:34Z","title_canon_sha256":"66a52c6bed06368a59cedc8444e4c6e9d0382ffb531db28cbc54cc056a284c87"},"schema_version":"1.0","source":{"id":"0910.2351","kind":"arxiv","version":2}},"canonical_sha256":"b9abf58173ec0b264b6cbf218840afd96b205460ddfd01e55f32aeabdc56cd2d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9abf58173ec0b264b6cbf218840afd96b205460ddfd01e55f32aeabdc56cd2d","first_computed_at":"2026-05-18T02:34:19.096661Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:19.096661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uasndsNn+O8Pw851Z1idKafoRjh/YpXqZaiGB7l7XNjYKlthSOfiVE5UouWGJ4Xu+7vJP0c93dxPGilGwrxqBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:19.097161Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.2351","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7afa9d75faa8cbe2d0093fac91f3282697176afd65b6d4083a7dcfff1f0eab9d","sha256:83368d0d099fb4d678d283fa3e76daf9ddaded3650b14cbad1c3413d39d37b21"],"state_sha256":"2391535224f26793e31497f4a3bdf5620a1430e7d70af4b60086b6e47ad19228"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TRYUq4/tjlxS0YuhsNZhh4ALnKHx5gBcczufDEzZVfTqtGy/NeMMXvKPXBYps1PiCOsT4GQNa5iA9EW+ekfQBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T18:52:41.773453Z","bundle_sha256":"25010761d21cd92333f9f3f5784d4f27a4fb49cb6948673f11c8f6d5e3051855"}}