{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:BHWAZ5CFCIXX5LMU6SUBVEYRPX","short_pith_number":"pith:BHWAZ5CF","canonical_record":{"source":{"id":"1901.01271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-04T19:00:27Z","cross_cats_sorted":[],"title_canon_sha256":"ef983c9a045152bf39c888225c6041829e5be410ba9c30d037b2704520f30712","abstract_canon_sha256":"e6e03ed650c92c743bef69d2c5ec001f694d9697f0875921e90a37b2b1bf34f5"},"schema_version":"1.0"},"canonical_sha256":"09ec0cf445122f7ead94f4a81a93117dfbaffc57541d42c86a566bc6c453f407","source":{"kind":"arxiv","id":"1901.01271","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.01271","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"arxiv_version","alias_value":"1901.01271v1","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01271","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"pith_short_12","alias_value":"BHWAZ5CFCIXX","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BHWAZ5CFCIXX5LMU","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BHWAZ5CF","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:BHWAZ5CFCIXX5LMU6SUBVEYRPX","target":"record","payload":{"canonical_record":{"source":{"id":"1901.01271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-04T19:00:27Z","cross_cats_sorted":[],"title_canon_sha256":"ef983c9a045152bf39c888225c6041829e5be410ba9c30d037b2704520f30712","abstract_canon_sha256":"e6e03ed650c92c743bef69d2c5ec001f694d9697f0875921e90a37b2b1bf34f5"},"schema_version":"1.0"},"canonical_sha256":"09ec0cf445122f7ead94f4a81a93117dfbaffc57541d42c86a566bc6c453f407","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:39.767455Z","signature_b64":"vQ7h3tznLnPdjrd+KtxsXOufiEd8msu4w0U37RarCbRQMfkzl8MBVbdiMslqy8bSDgpKxzn31dqgUUw76oB1Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09ec0cf445122f7ead94f4a81a93117dfbaffc57541d42c86a566bc6c453f407","last_reissued_at":"2026-05-17T23:49:39.766954Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:39.766954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.01271","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:49:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k2lnyWLWJ9y3Gf1KteTzlXBzumVQvsut5JWh+XZesHbFIOSsAgNz36Ama6owUltW/RmUxwcthYp305lMYSUyCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T15:43:54.614951Z"},"content_sha256":"19acd24e51160e6a6889bd4d0f7ccb1d8fd3e0fb656a88fb58431f1927990751","schema_version":"1.0","event_id":"sha256:19acd24e51160e6a6889bd4d0f7ccb1d8fd3e0fb656a88fb58431f1927990751"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:BHWAZ5CFCIXX5LMU6SUBVEYRPX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The MASSIVE Survey - XII Connecting Stellar Populations of Early-Type Galaxies to Kinematics and Environment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andrew Goulding, Chung-Pei Ma, Jennifer Ito, Jenny E Greene, Jens Thomas, John P. Blakeslee, Jonelle L. Walsh, Matthew E. Quenneville, Melanie Veale","submitted_at":"2019-01-04T19:00:27Z","abstract_excerpt":"We measure the stellar populations as a function of radius for 90 early-type galaxies (ETGs) in the MASSIVE survey, a volume-limited integral-field spectroscopic (IFS) galaxy survey targeting all northern-sky ETGs with absolute K-band magnitude M_K < -25.3 mag, or stellar mass M* 4x10^11 M_sun, within 108 Mpc. We are able to measure reliable stellar population parameters for individual galaxies out to 10-20 kpc (1-3 R_e) depending on the galaxy. Focusing on ~R_e (~10 kpc), we find significant correlations between the abundance ratios, sigma, and M* at large radius, but we also find that the ab"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01271","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:49:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4Z/Y25J8dsI2+XiG2++V6bgpOF1lks4sTjajMgTewyArNfHJ5AXUgJp5sWaDqa1ghg7YDnNdbXnNgL9sGURTCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T15:43:54.615675Z"},"content_sha256":"434b1046f0de70b7a81c03fd9856c817036dd08aa82712fa9d8ec924cf01c36d","schema_version":"1.0","event_id":"sha256:434b1046f0de70b7a81c03fd9856c817036dd08aa82712fa9d8ec924cf01c36d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BHWAZ5CFCIXX5LMU6SUBVEYRPX/bundle.json","state_url":"https://pith.science/pith/BHWAZ5CFCIXX5LMU6SUBVEYRPX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BHWAZ5CFCIXX5LMU6SUBVEYRPX/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":"2026-05-31T15:43:54Z","links":{"resolver":"https://pith.science/pith/BHWAZ5CFCIXX5LMU6SUBVEYRPX","bundle":"https://pith.science/pith/BHWAZ5CFCIXX5LMU6SUBVEYRPX/bundle.json","state":"https://pith.science/pith/BHWAZ5CFCIXX5LMU6SUBVEYRPX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BHWAZ5CFCIXX5LMU6SUBVEYRPX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BHWAZ5CFCIXX5LMU6SUBVEYRPX","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":"e6e03ed650c92c743bef69d2c5ec001f694d9697f0875921e90a37b2b1bf34f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-04T19:00:27Z","title_canon_sha256":"ef983c9a045152bf39c888225c6041829e5be410ba9c30d037b2704520f30712"},"schema_version":"1.0","source":{"id":"1901.01271","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.01271","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"arxiv_version","alias_value":"1901.01271v1","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01271","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"pith_short_12","alias_value":"BHWAZ5CFCIXX","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BHWAZ5CFCIXX5LMU","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BHWAZ5CF","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:434b1046f0de70b7a81c03fd9856c817036dd08aa82712fa9d8ec924cf01c36d","target":"graph","created_at":"2026-05-17T23:49:39Z","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":"We measure the stellar populations as a function of radius for 90 early-type galaxies (ETGs) in the MASSIVE survey, a volume-limited integral-field spectroscopic (IFS) galaxy survey targeting all northern-sky ETGs with absolute K-band magnitude M_K < -25.3 mag, or stellar mass M* 4x10^11 M_sun, within 108 Mpc. We are able to measure reliable stellar population parameters for individual galaxies out to 10-20 kpc (1-3 R_e) depending on the galaxy. Focusing on ~R_e (~10 kpc), we find significant correlations between the abundance ratios, sigma, and M* at large radius, but we also find that the ab","authors_text":"Andrew Goulding, Chung-Pei Ma, Jennifer Ito, Jenny E Greene, Jens Thomas, John P. Blakeslee, Jonelle L. Walsh, Matthew E. Quenneville, Melanie Veale","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-04T19:00:27Z","title":"The MASSIVE Survey - XII Connecting Stellar Populations of Early-Type Galaxies to Kinematics and Environment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01271","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":"sha256:19acd24e51160e6a6889bd4d0f7ccb1d8fd3e0fb656a88fb58431f1927990751","target":"record","created_at":"2026-05-17T23:49:39Z","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":"e6e03ed650c92c743bef69d2c5ec001f694d9697f0875921e90a37b2b1bf34f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-04T19:00:27Z","title_canon_sha256":"ef983c9a045152bf39c888225c6041829e5be410ba9c30d037b2704520f30712"},"schema_version":"1.0","source":{"id":"1901.01271","kind":"arxiv","version":1}},"canonical_sha256":"09ec0cf445122f7ead94f4a81a93117dfbaffc57541d42c86a566bc6c453f407","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09ec0cf445122f7ead94f4a81a93117dfbaffc57541d42c86a566bc6c453f407","first_computed_at":"2026-05-17T23:49:39.766954Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:39.766954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vQ7h3tznLnPdjrd+KtxsXOufiEd8msu4w0U37RarCbRQMfkzl8MBVbdiMslqy8bSDgpKxzn31dqgUUw76oB1Bw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:39.767455Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.01271","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19acd24e51160e6a6889bd4d0f7ccb1d8fd3e0fb656a88fb58431f1927990751","sha256:434b1046f0de70b7a81c03fd9856c817036dd08aa82712fa9d8ec924cf01c36d"],"state_sha256":"abaa2180ea74cebcc9ca66679463df06aae212704f400c13586921b4e5baecc2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xI/A4O02r0ZQUeaVLTn5FQrm+IfHDmUmFz9wnSv81wGKOQoUQOBN3QsAw0rE/Wd2aYWm6UsOYleFnsEiX3s3CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T15:43:54.619778Z","bundle_sha256":"352c3151a1e096b3e48e03bafa53c4344759606102bb41815fff238e51cc1fa3"}}