{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:GFF25PYDJIPGJREJU4KQURAISP","short_pith_number":"pith:GFF25PYD","schema_version":"1.0","canonical_sha256":"314baebf034a1e64c489a7150a440893df22e5338f57d478f1f628a96b1dd5c0","source":{"kind":"arxiv","id":"1906.01631","version":1},"attestation_state":"computed","paper":{"title":"Discussing the first velocity dispersion profile of an ultra-diffuse galaxy in MOND","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Benoit Famaey, Michal B\\'ilek, Oliver M\\\"uller","submitted_at":"2019-06-04T17:59:59Z","abstract_excerpt":"Using Jeans modelling, we calculate the velocity dispersion profile of the ultra-diffuse galaxy (UDG) Dragonfly 44 in MOND. For the nominal mass-to-light ratio from the literature and an isotropic profile, the agreement with the data is excellent near the center of the galaxy. However, in modified gravity, close to the cluster core, the gravitational environment should bring the galaxy back towards the Newtonian behavior. This success of the isolated MOND prediction for the central velocity dispersion could then mean that the galaxy is at large distances ($\\gg5$ Mpc) from the cluster core, as "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1906.01631","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-04T17:59:59Z","cross_cats_sorted":[],"title_canon_sha256":"b9ca0ebb3fc0b3d1356c181fe73abc1ed0be8f30913675491f753a75d832e500","abstract_canon_sha256":"0e48aed17994b8e49c69d87b08cfe66aab7b7a33ea9164ad7829daa95b49fa14"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:41.856120Z","signature_b64":"deEqmtuj1kV7lEdTJwwJr5JkPzqp3LVNnoCscmQGyAHSlBFdUpdkZvWPxCQkd2AGefxuP5rDuRDD3G9Nfjh1CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"314baebf034a1e64c489a7150a440893df22e5338f57d478f1f628a96b1dd5c0","last_reissued_at":"2026-05-17T23:41:41.855587Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:41.855587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Discussing the first velocity dispersion profile of an ultra-diffuse galaxy in MOND","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Benoit Famaey, Michal B\\'ilek, Oliver M\\\"uller","submitted_at":"2019-06-04T17:59:59Z","abstract_excerpt":"Using Jeans modelling, we calculate the velocity dispersion profile of the ultra-diffuse galaxy (UDG) Dragonfly 44 in MOND. For the nominal mass-to-light ratio from the literature and an isotropic profile, the agreement with the data is excellent near the center of the galaxy. However, in modified gravity, close to the cluster core, the gravitational environment should bring the galaxy back towards the Newtonian behavior. This success of the isolated MOND prediction for the central velocity dispersion could then mean that the galaxy is at large distances ($\\gg5$ Mpc) from the cluster core, as "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.01631","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1906.01631","created_at":"2026-05-17T23:41:41.855659+00:00"},{"alias_kind":"arxiv_version","alias_value":"1906.01631v1","created_at":"2026-05-17T23:41:41.855659+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.01631","created_at":"2026-05-17T23:41:41.855659+00:00"},{"alias_kind":"pith_short_12","alias_value":"GFF25PYDJIPG","created_at":"2026-05-18T12:33:18.533446+00:00"},{"alias_kind":"pith_short_16","alias_value":"GFF25PYDJIPGJREJ","created_at":"2026-05-18T12:33:18.533446+00:00"},{"alias_kind":"pith_short_8","alias_value":"GFF25PYD","created_at":"2026-05-18T12:33:18.533446+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP","json":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP.json","graph_json":"https://pith.science/api/pith-number/GFF25PYDJIPGJREJU4KQURAISP/graph.json","events_json":"https://pith.science/api/pith-number/GFF25PYDJIPGJREJU4KQURAISP/events.json","paper":"https://pith.science/paper/GFF25PYD"},"agent_actions":{"view_html":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP","download_json":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP.json","view_paper":"https://pith.science/paper/GFF25PYD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1906.01631&json=true","fetch_graph":"https://pith.science/api/pith-number/GFF25PYDJIPGJREJU4KQURAISP/graph.json","fetch_events":"https://pith.science/api/pith-number/GFF25PYDJIPGJREJU4KQURAISP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP/action/storage_attestation","attest_author":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP/action/author_attestation","sign_citation":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP/action/citation_signature","submit_replication":"https://pith.science/pith/GFF25PYDJIPGJREJU4KQURAISP/action/replication_record"}},"created_at":"2026-05-17T23:41:41.855659+00:00","updated_at":"2026-05-17T23:41:41.855659+00:00"}