{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:6WWGSYV6B3OWHRRBNVQ5NGDVJA","short_pith_number":"pith:6WWGSYV6","schema_version":"1.0","canonical_sha256":"f5ac6962be0edd63c6216d61d69875483c05b3dc30afc628c4cfc357d4844041","source":{"kind":"arxiv","id":"1206.5004","version":2},"attestation_state":"computed","paper":{"title":"How do minor mergers promote inside-out growth of ellipticals, transforming the size, density profile and dark matter fraction?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Jeremiah P. Ostriker, Michael Hilz, Thorsten Naab","submitted_at":"2012-06-21T20:00:06Z","abstract_excerpt":"There is observational evidence for inside-out growth of elliptical galaxies since $z \\gtrsim 2-3$, which is not driven by in-situ star formation. Many systems at high redshift have small sizes $\\sim 1kpc$ and surface brightness profiles with low Sersic indices n. The most likely descendants have, on average, grown by a factor of two in mass and a factor of four in size, indicating $r \\propto M^{\\alpha}$ with $\\alpha \\gtrsim 2$. They also have surface brightness profiles with $n \\gtrsim 5$. This evolution can be qualitatively explained on the basis of two assumptions: compact ellipticals predo"},"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":"1206.5004","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-06-21T20:00:06Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"8300669c3e4e54084fc3a64d6cbf7f83cde344f558db5a4aaa72120d27232607","abstract_canon_sha256":"8ca5a27f9a9ed33f06c8ebf2258da6c3ac938d3d6073e58e6a8edc5dabb3c010"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:43.504965Z","signature_b64":"LAytcyoeI1BD5TnYSuDHCh5yogq/9e7Bpg+USCHgXKF01qaXurJXzw54exbtTD/0O6FzzkL+w2Na8XWqI/miCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f5ac6962be0edd63c6216d61d69875483c05b3dc30afc628c4cfc357d4844041","last_reissued_at":"2026-05-18T01:56:43.504501Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:43.504501Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"How do minor mergers promote inside-out growth of ellipticals, transforming the size, density profile and dark matter fraction?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Jeremiah P. Ostriker, Michael Hilz, Thorsten Naab","submitted_at":"2012-06-21T20:00:06Z","abstract_excerpt":"There is observational evidence for inside-out growth of elliptical galaxies since $z \\gtrsim 2-3$, which is not driven by in-situ star formation. Many systems at high redshift have small sizes $\\sim 1kpc$ and surface brightness profiles with low Sersic indices n. The most likely descendants have, on average, grown by a factor of two in mass and a factor of four in size, indicating $r \\propto M^{\\alpha}$ with $\\alpha \\gtrsim 2$. They also have surface brightness profiles with $n \\gtrsim 5$. This evolution can be qualitatively explained on the basis of two assumptions: compact ellipticals predo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.5004","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1206.5004","created_at":"2026-05-18T01:56:43.504577+00:00"},{"alias_kind":"arxiv_version","alias_value":"1206.5004v2","created_at":"2026-05-18T01:56:43.504577+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.5004","created_at":"2026-05-18T01:56:43.504577+00:00"},{"alias_kind":"pith_short_12","alias_value":"6WWGSYV6B3OW","created_at":"2026-05-18T12:26:56.085431+00:00"},{"alias_kind":"pith_short_16","alias_value":"6WWGSYV6B3OWHRRB","created_at":"2026-05-18T12:26:56.085431+00:00"},{"alias_kind":"pith_short_8","alias_value":"6WWGSYV6","created_at":"2026-05-18T12:26:56.085431+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2606.26703","citing_title":"Extended Structure in E+A Galaxies Via Image Stacking","ref_index":65,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA","json":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA.json","graph_json":"https://pith.science/api/pith-number/6WWGSYV6B3OWHRRBNVQ5NGDVJA/graph.json","events_json":"https://pith.science/api/pith-number/6WWGSYV6B3OWHRRBNVQ5NGDVJA/events.json","paper":"https://pith.science/paper/6WWGSYV6"},"agent_actions":{"view_html":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA","download_json":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA.json","view_paper":"https://pith.science/paper/6WWGSYV6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1206.5004&json=true","fetch_graph":"https://pith.science/api/pith-number/6WWGSYV6B3OWHRRBNVQ5NGDVJA/graph.json","fetch_events":"https://pith.science/api/pith-number/6WWGSYV6B3OWHRRBNVQ5NGDVJA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA/action/storage_attestation","attest_author":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA/action/author_attestation","sign_citation":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA/action/citation_signature","submit_replication":"https://pith.science/pith/6WWGSYV6B3OWHRRBNVQ5NGDVJA/action/replication_record"}},"created_at":"2026-05-18T01:56:43.504577+00:00","updated_at":"2026-05-18T01:56:43.504577+00:00"}