{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:4XA3MTUVK2IPXDEVFRNURVQMKZ","short_pith_number":"pith:4XA3MTUV","canonical_record":{"source":{"id":"1504.05921","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-04-22T18:50:56Z","cross_cats_sorted":[],"title_canon_sha256":"f19ed6becb573e3e1b6009da4c58c2d39eb2d8d6066fa3eceba9e6de26b31c2d","abstract_canon_sha256":"4872af4bf60ea52fc8881120c5a738157a35a4be5731ed25ef1d621bc2914805"},"schema_version":"1.0"},"canonical_sha256":"e5c1b64e955690fb8c952c5b48d60c566b7c61ac4464f9ea589e0672eb450391","source":{"kind":"arxiv","id":"1504.05921","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.05921","created_at":"2026-05-18T01:38:53Z"},{"alias_kind":"arxiv_version","alias_value":"1504.05921v1","created_at":"2026-05-18T01:38:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.05921","created_at":"2026-05-18T01:38:53Z"},{"alias_kind":"pith_short_12","alias_value":"4XA3MTUVK2IP","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"4XA3MTUVK2IPXDEV","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"4XA3MTUV","created_at":"2026-05-18T12:29:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:4XA3MTUVK2IPXDEVFRNURVQMKZ","target":"record","payload":{"canonical_record":{"source":{"id":"1504.05921","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-04-22T18:50:56Z","cross_cats_sorted":[],"title_canon_sha256":"f19ed6becb573e3e1b6009da4c58c2d39eb2d8d6066fa3eceba9e6de26b31c2d","abstract_canon_sha256":"4872af4bf60ea52fc8881120c5a738157a35a4be5731ed25ef1d621bc2914805"},"schema_version":"1.0"},"canonical_sha256":"e5c1b64e955690fb8c952c5b48d60c566b7c61ac4464f9ea589e0672eb450391","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:53.666605Z","signature_b64":"TeGRqYb5Sggn6/up0HJ+whOOsXlmDyDzgJ02Dv/UJJOq6v5Z/A3xEBqhgpIY5OSSuiawVvVTq5nFdHe3HMMRCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5c1b64e955690fb8c952c5b48d60c566b7c61ac4464f9ea589e0672eb450391","last_reissued_at":"2026-05-18T01:38:53.665854Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:53.665854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.05921","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":"2026-05-18T01:38:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ylKA1Sa65FxfWw5p8VuSOToq47g+t85rNgI4GJZEglXiQUQqnHS2ti2sRKsVhJd9kxFHfFXF8Yc/zu389/LJBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:11:20.832456Z"},"content_sha256":"7dd8c05b91c9cda18c4127cd23554f88d37a33e0e6f0dc89eb5fcebcc196f8c9","schema_version":"1.0","event_id":"sha256:7dd8c05b91c9cda18c4127cd23554f88d37a33e0e6f0dc89eb5fcebcc196f8c9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:4XA3MTUVK2IPXDEVFRNURVQMKZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Outer and inner mass distributions of the irregular galaxies UGC 4284 and UGC 11861: Constraining the baryonic content through stellar population synthesis studies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Eric E. Mart\\'inez-Garc\\'ia, M. Rosado, P. Repetto, R. Gabbasov","submitted_at":"2015-04-22T18:50:56Z","abstract_excerpt":"In this article we investigate the outer and inner mass distributions of the irregular galaxies UGC 4284 and UGC 11861, taking advantage of published HI and H{\\alpha} high resolution rotation curves and constraining the stellar disk of both galaxies throughout stellar population synthesis studies. In addition we take into account the gas content of both galaxies deriving the HI+He rotation curve. The deduced baryonic rotation curves (star+gas) are inadequate to account for the total mass of UGC 4284 and UGC 11861, for that reason we examine the possibility of dark matter to explain the incongr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.05921","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":""},"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":"2026-05-18T01:38:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v2j/qUCK4N0Wcz5gpgSOTVJBpXtD2nJq3NxndCGHLDMAwnqitgAE6D8sZWOHUXHOJppnf8WAyBa6/Vc1iIdMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:11:20.832978Z"},"content_sha256":"0986f11b85462c5d2ac51cb62565dcb565526dc224ad3959a410db0417bce3e4","schema_version":"1.0","event_id":"sha256:0986f11b85462c5d2ac51cb62565dcb565526dc224ad3959a410db0417bce3e4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4XA3MTUVK2IPXDEVFRNURVQMKZ/bundle.json","state_url":"https://pith.science/pith/4XA3MTUVK2IPXDEVFRNURVQMKZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4XA3MTUVK2IPXDEVFRNURVQMKZ/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":"2026-05-30T01:11:20Z","links":{"resolver":"https://pith.science/pith/4XA3MTUVK2IPXDEVFRNURVQMKZ","bundle":"https://pith.science/pith/4XA3MTUVK2IPXDEVFRNURVQMKZ/bundle.json","state":"https://pith.science/pith/4XA3MTUVK2IPXDEVFRNURVQMKZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4XA3MTUVK2IPXDEVFRNURVQMKZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:4XA3MTUVK2IPXDEVFRNURVQMKZ","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":"4872af4bf60ea52fc8881120c5a738157a35a4be5731ed25ef1d621bc2914805","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-04-22T18:50:56Z","title_canon_sha256":"f19ed6becb573e3e1b6009da4c58c2d39eb2d8d6066fa3eceba9e6de26b31c2d"},"schema_version":"1.0","source":{"id":"1504.05921","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.05921","created_at":"2026-05-18T01:38:53Z"},{"alias_kind":"arxiv_version","alias_value":"1504.05921v1","created_at":"2026-05-18T01:38:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.05921","created_at":"2026-05-18T01:38:53Z"},{"alias_kind":"pith_short_12","alias_value":"4XA3MTUVK2IP","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"4XA3MTUVK2IPXDEV","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"4XA3MTUV","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:0986f11b85462c5d2ac51cb62565dcb565526dc224ad3959a410db0417bce3e4","target":"graph","created_at":"2026-05-18T01:38:53Z","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":"In this article we investigate the outer and inner mass distributions of the irregular galaxies UGC 4284 and UGC 11861, taking advantage of published HI and H{\\alpha} high resolution rotation curves and constraining the stellar disk of both galaxies throughout stellar population synthesis studies. In addition we take into account the gas content of both galaxies deriving the HI+He rotation curve. The deduced baryonic rotation curves (star+gas) are inadequate to account for the total mass of UGC 4284 and UGC 11861, for that reason we examine the possibility of dark matter to explain the incongr","authors_text":"Eric E. Mart\\'inez-Garc\\'ia, M. Rosado, P. Repetto, R. Gabbasov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-04-22T18:50:56Z","title":"Outer and inner mass distributions of the irregular galaxies UGC 4284 and UGC 11861: Constraining the baryonic content through stellar population synthesis studies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.05921","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":"sha256:7dd8c05b91c9cda18c4127cd23554f88d37a33e0e6f0dc89eb5fcebcc196f8c9","target":"record","created_at":"2026-05-18T01:38:53Z","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":"4872af4bf60ea52fc8881120c5a738157a35a4be5731ed25ef1d621bc2914805","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-04-22T18:50:56Z","title_canon_sha256":"f19ed6becb573e3e1b6009da4c58c2d39eb2d8d6066fa3eceba9e6de26b31c2d"},"schema_version":"1.0","source":{"id":"1504.05921","kind":"arxiv","version":1}},"canonical_sha256":"e5c1b64e955690fb8c952c5b48d60c566b7c61ac4464f9ea589e0672eb450391","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5c1b64e955690fb8c952c5b48d60c566b7c61ac4464f9ea589e0672eb450391","first_computed_at":"2026-05-18T01:38:53.665854Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:53.665854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TeGRqYb5Sggn6/up0HJ+whOOsXlmDyDzgJ02Dv/UJJOq6v5Z/A3xEBqhgpIY5OSSuiawVvVTq5nFdHe3HMMRCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:53.666605Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.05921","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7dd8c05b91c9cda18c4127cd23554f88d37a33e0e6f0dc89eb5fcebcc196f8c9","sha256:0986f11b85462c5d2ac51cb62565dcb565526dc224ad3959a410db0417bce3e4"],"state_sha256":"0bd3acb81c82625eb6d3811c4e3e33362adf20780122bed2400d2e99416a8779"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h1S3CGgk5TRJudYqB1uMMXZ7myydT48LZ6datkVT5ZLToDKksgNZly42Qo7JSCZ/f0ayAK91nsHgxI/lwcGGCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T01:11:20.837438Z","bundle_sha256":"c0278bd98f324279eb61f62a2fcf93f7bbc2b4d912801511c52c81a7da3c16b4"}}