{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:YIROKBRFDJJA5UBKDENSMNGXIU","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":"d4a9fd07ce44b98d91c93bc87243143473384bed3349ce2b11fd3c1ff31c083f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-04T13:38:00Z","title_canon_sha256":"9a590be60ccf9038b0202b511b4a5bda18349a3066788ae5aa6c78b54a04f0a1"},"schema_version":"1.0","source":{"id":"1102.0911","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.0911","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"arxiv_version","alias_value":"1102.0911v1","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.0911","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"pith_short_12","alias_value":"YIROKBRFDJJA","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"YIROKBRFDJJA5UBK","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"YIROKBRF","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:f6316d85790548296b2278ae18d9d631fd139b11bb5e0a0570a774313cc2f21f","target":"graph","created_at":"2026-05-18T02:03:16Z","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":"The mass assembly of galaxies leaves various imprints on their surroundings, such as shells, streams and tidal tails. The frequency and properties of these fine structures depend on the mechanism driving the mass assembly: e.g. a monolithic collapse, rapid cold-gas accretion followed by violent disk instabilities, minor mergers or major dry / wet mergers. Therefore, by studying the outskirts of galaxies, one can learn about their main formation mechanism. I present here our on-going work to characterize the outskirts of Early-Type Galaxies (ETGs), which are powerful probes at low redshift of t","authors_text":"A. Weijmans, D. Krajnovic, E. Emsellem, E. Ferriere, F. Bournaud, H. Kuntschner, J.-C. Cuillandre, K. Alatalo, L. Blitz, L. Ferrarese, L. MacArthur, L. Michel-Dansac, L. M. Young, M. Bois, M. Bureau, M. Cappellari, M. Sarzi, N. Scott, P.-A. Duc, P. Cote, P. Serra, P. T. de Zeeuw, P.-Y. Lablanche, R. L. Davies, R. M. McDermid, R. Morganti, S. Gwyn, S. Khochfar, T. A. Davis, T. Naab, T. Oosterloo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-04T13:38:00Z","title":"Investigating the merger origin of Early-Type Galaxies using ultra-deep optical images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.0911","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:edb8c694644683c8032ebbe1dc44f1c52273f21978d381856d55bb2033c10b7f","target":"record","created_at":"2026-05-18T02:03:16Z","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":"d4a9fd07ce44b98d91c93bc87243143473384bed3349ce2b11fd3c1ff31c083f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-02-04T13:38:00Z","title_canon_sha256":"9a590be60ccf9038b0202b511b4a5bda18349a3066788ae5aa6c78b54a04f0a1"},"schema_version":"1.0","source":{"id":"1102.0911","kind":"arxiv","version":1}},"canonical_sha256":"c222e506251a520ed02a191b2634d745203e1818a28330ba53f91a1d9dcc8de7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c222e506251a520ed02a191b2634d745203e1818a28330ba53f91a1d9dcc8de7","first_computed_at":"2026-05-18T02:03:16.680357Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:16.680357Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K6IB0HcTwLMYMxIhTlp1S8lmSc9wiwCx0nyo0l4ZslyOBXQ/ZCG620R5yeE6E02BfF2wfQBnJKLAnx4NbBmyDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:16.680990Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.0911","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:edb8c694644683c8032ebbe1dc44f1c52273f21978d381856d55bb2033c10b7f","sha256:f6316d85790548296b2278ae18d9d631fd139b11bb5e0a0570a774313cc2f21f"],"state_sha256":"ee4e83daf8de80675bbe5fb301b02b50d271d4a44c82158c193fcb4b034dd87f"}