{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:UIM73XL373AZSIYHJ6XBWS4E26","short_pith_number":"pith:UIM73XL3","schema_version":"1.0","canonical_sha256":"a219fddd7bfec19923074fae1b4b84d7894426cfabdff2dec5f18847639a619d","source":{"kind":"arxiv","id":"1308.5236","version":1},"attestation_state":"computed","paper":{"title":"Exponential Galaxy Disks from Stellar Scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bruce G. Elmegreen, Curtis Struck","submitted_at":"2013-08-23T20:16:27Z","abstract_excerpt":"Stellar scattering off of orbiting or transient clumps is shown to lead to the formation of exponential profiles in both surface density and velocity dispersion in a two-dimensional non-self gravitating stellar disk with a fixed halo potential. The exponential forms for both nearly-flat rotation curves and near-solid body rotation curves. The exponential does not depend on initial conditions, spiral arms, bars, viscosity, star formation, or strong shear. After a rapid initial development, the exponential saturates to an approximately fixed scale length. The inner exponential in a two-component"},"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":"1308.5236","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-23T20:16:27Z","cross_cats_sorted":[],"title_canon_sha256":"f3513811c8538bfa7abac00c17024f89fd93d3ad91c9c76555d8a954af90baad","abstract_canon_sha256":"e3f5e06f2383a66505c2a2f52e19fdc6058b6ac00033a47e7aae87fe0e143dbd"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:47:59.036812Z","signature_b64":"kipu6T0/WCcpNtsrT4Xf0jmyw5g7pL7oelEOMmOF8mRIV2fIhZKsN7INlOjjIe76Et/sZJ0dqPpc3iVf6ho3Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a219fddd7bfec19923074fae1b4b84d7894426cfabdff2dec5f18847639a619d","last_reissued_at":"2026-05-18T01:47:59.036269Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:47:59.036269Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Exponential Galaxy Disks from Stellar Scattering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bruce G. Elmegreen, Curtis Struck","submitted_at":"2013-08-23T20:16:27Z","abstract_excerpt":"Stellar scattering off of orbiting or transient clumps is shown to lead to the formation of exponential profiles in both surface density and velocity dispersion in a two-dimensional non-self gravitating stellar disk with a fixed halo potential. The exponential forms for both nearly-flat rotation curves and near-solid body rotation curves. The exponential does not depend on initial conditions, spiral arms, bars, viscosity, star formation, or strong shear. After a rapid initial development, the exponential saturates to an approximately fixed scale length. The inner exponential in a two-component"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.5236","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":"1308.5236","created_at":"2026-05-18T01:47:59.036378+00:00"},{"alias_kind":"arxiv_version","alias_value":"1308.5236v1","created_at":"2026-05-18T01:47:59.036378+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.5236","created_at":"2026-05-18T01:47:59.036378+00:00"},{"alias_kind":"pith_short_12","alias_value":"UIM73XL373AZ","created_at":"2026-05-18T12:28:02.375192+00:00"},{"alias_kind":"pith_short_16","alias_value":"UIM73XL373AZSIYH","created_at":"2026-05-18T12:28:02.375192+00:00"},{"alias_kind":"pith_short_8","alias_value":"UIM73XL3","created_at":"2026-05-18T12:28:02.375192+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/UIM73XL373AZSIYHJ6XBWS4E26","json":"https://pith.science/pith/UIM73XL373AZSIYHJ6XBWS4E26.json","graph_json":"https://pith.science/api/pith-number/UIM73XL373AZSIYHJ6XBWS4E26/graph.json","events_json":"https://pith.science/api/pith-number/UIM73XL373AZSIYHJ6XBWS4E26/events.json","paper":"https://pith.science/paper/UIM73XL3"},"agent_actions":{"view_html":"https://pith.science/pith/UIM73XL373AZSIYHJ6XBWS4E26","download_json":"https://pith.science/pith/UIM73XL373AZSIYHJ6XBWS4E26.json","view_paper":"https://pith.science/paper/UIM73XL3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1308.5236&json=true","fetch_graph":"https://pith.science/api/pith-number/UIM73XL373AZSIYHJ6XBWS4E26/graph.json","fetch_events":"https://pith.science/api/pith-number/UIM73XL373AZSIYHJ6XBWS4E26/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UIM73XL373AZSIYHJ6XBWS4E26/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UIM73XL373AZSIYHJ6XBWS4E26/action/storage_attestation","attest_author":"https://pith.science/pith/UIM73XL373AZSIYHJ6XBWS4E26/action/author_attestation","sign_citation":"https://pith.science/pith/UIM73XL373AZSIYHJ6XBWS4E26/action/citation_signature","submit_replication":"https://pith.science/pith/UIM73XL373AZSIYHJ6XBWS4E26/action/replication_record"}},"created_at":"2026-05-18T01:47:59.036378+00:00","updated_at":"2026-05-18T01:47:59.036378+00:00"}