{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:FNKC34VHEBHUTBYXGOWPPXTXWY","short_pith_number":"pith:FNKC34VH","canonical_record":{"source":{"id":"1801.01883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-01-05T19:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"bbebfccaa6b5b6a4373f5619bb3dc5613d3f99e8c1795b435842d696cda806f5","abstract_canon_sha256":"20722e93afafbe2ca96e591cd7b8cd9d6d4e8d1fbb9d5731c749831cecacd17e"},"schema_version":"1.0"},"canonical_sha256":"2b542df2a7204f49871733acf7de77b630d1ca38d0c24213bd8a9365ab9676ad","source":{"kind":"arxiv","id":"1801.01883","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.01883","created_at":"2026-05-18T00:06:11Z"},{"alias_kind":"arxiv_version","alias_value":"1801.01883v2","created_at":"2026-05-18T00:06:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.01883","created_at":"2026-05-18T00:06:11Z"},{"alias_kind":"pith_short_12","alias_value":"FNKC34VHEBHU","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"FNKC34VHEBHUTBYX","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"FNKC34VH","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:FNKC34VHEBHUTBYXGOWPPXTXWY","target":"record","payload":{"canonical_record":{"source":{"id":"1801.01883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-01-05T19:00:01Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"bbebfccaa6b5b6a4373f5619bb3dc5613d3f99e8c1795b435842d696cda806f5","abstract_canon_sha256":"20722e93afafbe2ca96e591cd7b8cd9d6d4e8d1fbb9d5731c749831cecacd17e"},"schema_version":"1.0"},"canonical_sha256":"2b542df2a7204f49871733acf7de77b630d1ca38d0c24213bd8a9365ab9676ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:11.937067Z","signature_b64":"NpH0lEsVI3gbFbudNsH4a5q7nWoY+Xcpea/Vq90/DQcp/qd4oH7SNYgKPG9hIElXTvs7A63j5oPE9peyhtZACw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2b542df2a7204f49871733acf7de77b630d1ca38d0c24213bd8a9365ab9676ad","last_reissued_at":"2026-05-18T00:06:11.936381Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:11.936381Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.01883","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:06:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Whcyj18idaAwNb853XhjZKkKFGnr41DogyqQhFJ1gLHjLkvP0W62ZG2NubC3kgdPORN80cnTojZ1nQMFKHPDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:10:11.787951Z"},"content_sha256":"eed637a18b2db7dab961c09884c16f549acc5602c4e63f44ba68385991bec631","schema_version":"1.0","event_id":"sha256:eed637a18b2db7dab961c09884c16f549acc5602c4e63f44ba68385991bec631"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:FNKC34VHEBHUTBYXGOWPPXTXWY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for radial variations in the stellar mass-to-light ratio of massive galaxies from weak and strong lensing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"2), (2) University of California Santa Cruz, (3) Institute of Astronomy University of Cambridge, (4) Institut d'Astrophysique de Paris, (5) University of California Los Angeles, (6) National Astronomical Observatory of Japan, 7) ((1) Kavli IPMU, (7) SOKENDAI), Alessandro Sonnenfeld (1), Alexie Leauthaud (1, Matthew W. Auger (3), Raphael Gavazzi (4), Surhud More (1), Tommaso Treu (5), Yutaka Komiyama (6","submitted_at":"2018-01-05T19:00:01Z","abstract_excerpt":"The Initial Mass Function (IMF) for massive galaxies can be constrained by combining stellar dynamics with strong gravitational lensing. However, this method is limited by degeneracies between the density profile of dark matter and the stellar mass-to-light ratio. In this work we reduce this degeneracy by combining weak lensing together with strong lensing and stellar kinematics. Our analysis is based on two galaxy samples: 45 strong lenses from the SLACS survey and 1,700 massive quiescent galaxies from the SDSS main spectroscopic sample with weak lensing measurements from the Hyper Suprime-Ca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.01883","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:06:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f9RImju1Fz4J6pCiWloyI7nbYVYcdkVrDlvsZnxVmQ5sba4cTuAM6X+zH3vUL1JdJDYRaTZzGIUyJaeFGvMABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:10:11.788656Z"},"content_sha256":"41a587de66153dbbc095231717dc52e42db920870c3abbe3dc71e8b32da2f803","schema_version":"1.0","event_id":"sha256:41a587de66153dbbc095231717dc52e42db920870c3abbe3dc71e8b32da2f803"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FNKC34VHEBHUTBYXGOWPPXTXWY/bundle.json","state_url":"https://pith.science/pith/FNKC34VHEBHUTBYXGOWPPXTXWY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FNKC34VHEBHUTBYXGOWPPXTXWY/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":"2026-05-25T11:10:11Z","links":{"resolver":"https://pith.science/pith/FNKC34VHEBHUTBYXGOWPPXTXWY","bundle":"https://pith.science/pith/FNKC34VHEBHUTBYXGOWPPXTXWY/bundle.json","state":"https://pith.science/pith/FNKC34VHEBHUTBYXGOWPPXTXWY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FNKC34VHEBHUTBYXGOWPPXTXWY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FNKC34VHEBHUTBYXGOWPPXTXWY","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":"20722e93afafbe2ca96e591cd7b8cd9d6d4e8d1fbb9d5731c749831cecacd17e","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-01-05T19:00:01Z","title_canon_sha256":"bbebfccaa6b5b6a4373f5619bb3dc5613d3f99e8c1795b435842d696cda806f5"},"schema_version":"1.0","source":{"id":"1801.01883","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.01883","created_at":"2026-05-18T00:06:11Z"},{"alias_kind":"arxiv_version","alias_value":"1801.01883v2","created_at":"2026-05-18T00:06:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.01883","created_at":"2026-05-18T00:06:11Z"},{"alias_kind":"pith_short_12","alias_value":"FNKC34VHEBHU","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"FNKC34VHEBHUTBYX","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"FNKC34VH","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:41a587de66153dbbc095231717dc52e42db920870c3abbe3dc71e8b32da2f803","target":"graph","created_at":"2026-05-18T00:06:11Z","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 Initial Mass Function (IMF) for massive galaxies can be constrained by combining stellar dynamics with strong gravitational lensing. However, this method is limited by degeneracies between the density profile of dark matter and the stellar mass-to-light ratio. In this work we reduce this degeneracy by combining weak lensing together with strong lensing and stellar kinematics. Our analysis is based on two galaxy samples: 45 strong lenses from the SLACS survey and 1,700 massive quiescent galaxies from the SDSS main spectroscopic sample with weak lensing measurements from the Hyper Suprime-Ca","authors_text":"2), (2) University of California Santa Cruz, (3) Institute of Astronomy University of Cambridge, (4) Institut d'Astrophysique de Paris, (5) University of California Los Angeles, (6) National Astronomical Observatory of Japan, 7) ((1) Kavli IPMU, (7) SOKENDAI), Alessandro Sonnenfeld (1), Alexie Leauthaud (1, Matthew W. Auger (3), Raphael Gavazzi (4), Surhud More (1), Tommaso Treu (5), Yutaka Komiyama (6","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-01-05T19:00:01Z","title":"Evidence for radial variations in the stellar mass-to-light ratio of massive galaxies from weak and strong lensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.01883","kind":"arxiv","version":2},"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:eed637a18b2db7dab961c09884c16f549acc5602c4e63f44ba68385991bec631","target":"record","created_at":"2026-05-18T00:06:11Z","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":"20722e93afafbe2ca96e591cd7b8cd9d6d4e8d1fbb9d5731c749831cecacd17e","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-01-05T19:00:01Z","title_canon_sha256":"bbebfccaa6b5b6a4373f5619bb3dc5613d3f99e8c1795b435842d696cda806f5"},"schema_version":"1.0","source":{"id":"1801.01883","kind":"arxiv","version":2}},"canonical_sha256":"2b542df2a7204f49871733acf7de77b630d1ca38d0c24213bd8a9365ab9676ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2b542df2a7204f49871733acf7de77b630d1ca38d0c24213bd8a9365ab9676ad","first_computed_at":"2026-05-18T00:06:11.936381Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:11.936381Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NpH0lEsVI3gbFbudNsH4a5q7nWoY+Xcpea/Vq90/DQcp/qd4oH7SNYgKPG9hIElXTvs7A63j5oPE9peyhtZACw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:11.937067Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.01883","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eed637a18b2db7dab961c09884c16f549acc5602c4e63f44ba68385991bec631","sha256:41a587de66153dbbc095231717dc52e42db920870c3abbe3dc71e8b32da2f803"],"state_sha256":"02cb0692509db4940fb88aa1d268e40efeff43ec79f46d7ec5181ac33170b557"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rjOj9vIR8nfAFmi7gtGwGDTizaAaShUGSGd9VCVEtARoUJUXMjsSB3LJ3ERI14NprEmkoCVc/9X0NaFKxpoKBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T11:10:11.792202Z","bundle_sha256":"601983d965373cc82e1c8fc7127a91a758170405679b429de124e0f537bc45e3"}}