{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:4ALUVYTTYTP7HJA7FAZSD6E3LR","short_pith_number":"pith:4ALUVYTT","canonical_record":{"source":{"id":"0910.0293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-01T23:56:40Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"3f21415d5eccd83aa7dee0335459dbf04cbd0eafcd8d0bfdd4b5ede63a470dbf","abstract_canon_sha256":"1233fa4bf5cabeaa63d7c594ae955ddc97232ab0f1a0aa6c41f70292d08f786b"},"schema_version":"1.0"},"canonical_sha256":"e0174ae273c4dff3a41f283321f89b5c64eba431c93642a39620510c8ddb0763","source":{"kind":"arxiv","id":"0910.0293","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.0293","created_at":"2026-05-18T02:34:20Z"},{"alias_kind":"arxiv_version","alias_value":"0910.0293v1","created_at":"2026-05-18T02:34:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.0293","created_at":"2026-05-18T02:34:20Z"},{"alias_kind":"pith_short_12","alias_value":"4ALUVYTTYTP7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"4ALUVYTTYTP7HJA7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"4ALUVYTT","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:4ALUVYTTYTP7HJA7FAZSD6E3LR","target":"record","payload":{"canonical_record":{"source":{"id":"0910.0293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-01T23:56:40Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"3f21415d5eccd83aa7dee0335459dbf04cbd0eafcd8d0bfdd4b5ede63a470dbf","abstract_canon_sha256":"1233fa4bf5cabeaa63d7c594ae955ddc97232ab0f1a0aa6c41f70292d08f786b"},"schema_version":"1.0"},"canonical_sha256":"e0174ae273c4dff3a41f283321f89b5c64eba431c93642a39620510c8ddb0763","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:20.438789Z","signature_b64":"Us1r9nlP/szuVFvHo1/0yRFbrkIqS6jtZYnxH7VSH1bIMlQaplKfkIDXn01UUrJi7AkdfJ87z9z0bQLT29hPCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e0174ae273c4dff3a41f283321f89b5c64eba431c93642a39620510c8ddb0763","last_reissued_at":"2026-05-18T02:34:20.438168Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:20.438168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.0293","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":"2026-05-18T02:34:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EfZovCPiR0Mq4Xb3P4Gt/1Su39omA68IoH5YYjSx2I+I8k/YZNnnt45cN0QNEMbaya+koSObRKLnV70T6+KQBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T00:31:10.044251Z"},"content_sha256":"67dc557533a7aa8c83af672a929e0e9b92e59d117ea55cb74e740f141594e247","schema_version":"1.0","event_id":"sha256:67dc557533a7aa8c83af672a929e0e9b92e59d117ea55cb74e740f141594e247"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:4ALUVYTTYTP7HJA7FAZSD6E3LR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Population of Compact Elliptical Galaxies Detected with the Virtual Observatory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"Alberto Micol, Daniel Durand, Eric Slezak, Florence Durret, Igor Chilingarian, Serguei Dodonov, Veronique Cayatte, Yves Revaz","submitted_at":"2009-10-01T23:56:40Z","abstract_excerpt":"Compact elliptical galaxies are characterized by small sizes and high stellar densities. They are thought to form through tidal stripping of massive progenitors. However, only a handful of them were known, preventing us from understanding the role played by this mechanism in galaxy evolution. We present a population of 21 compact elliptical galaxies gathered with the Virtual Observatory. Follow-up spectroscopy and data mining, using high-resolution images and large databases, show that all the galaxies exhibit old metal-rich stellar populations different from those of dwarf elliptical galaxies"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.0293","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":"2026-05-18T02:34:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PTkqnO2bM8b+IuUgRAdXUw9DDLcQqYUl6vBViPxlvBnjL4ZYouWmxMNCgJsuAWh1wZ7veQe1gzp00Dz8KEaRDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T00:31:10.044924Z"},"content_sha256":"e9564d532c1224f679ece2bbbc9dcdf467e5a337ac26c6d514fd5340a2bacc34","schema_version":"1.0","event_id":"sha256:e9564d532c1224f679ece2bbbc9dcdf467e5a337ac26c6d514fd5340a2bacc34"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4ALUVYTTYTP7HJA7FAZSD6E3LR/bundle.json","state_url":"https://pith.science/pith/4ALUVYTTYTP7HJA7FAZSD6E3LR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4ALUVYTTYTP7HJA7FAZSD6E3LR/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":"2026-05-23T00:31:10Z","links":{"resolver":"https://pith.science/pith/4ALUVYTTYTP7HJA7FAZSD6E3LR","bundle":"https://pith.science/pith/4ALUVYTTYTP7HJA7FAZSD6E3LR/bundle.json","state":"https://pith.science/pith/4ALUVYTTYTP7HJA7FAZSD6E3LR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4ALUVYTTYTP7HJA7FAZSD6E3LR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:4ALUVYTTYTP7HJA7FAZSD6E3LR","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":"1233fa4bf5cabeaa63d7c594ae955ddc97232ab0f1a0aa6c41f70292d08f786b","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-01T23:56:40Z","title_canon_sha256":"3f21415d5eccd83aa7dee0335459dbf04cbd0eafcd8d0bfdd4b5ede63a470dbf"},"schema_version":"1.0","source":{"id":"0910.0293","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.0293","created_at":"2026-05-18T02:34:20Z"},{"alias_kind":"arxiv_version","alias_value":"0910.0293v1","created_at":"2026-05-18T02:34:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.0293","created_at":"2026-05-18T02:34:20Z"},{"alias_kind":"pith_short_12","alias_value":"4ALUVYTTYTP7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"4ALUVYTTYTP7HJA7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"4ALUVYTT","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:e9564d532c1224f679ece2bbbc9dcdf467e5a337ac26c6d514fd5340a2bacc34","target":"graph","created_at":"2026-05-18T02:34:20Z","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":"Compact elliptical galaxies are characterized by small sizes and high stellar densities. They are thought to form through tidal stripping of massive progenitors. However, only a handful of them were known, preventing us from understanding the role played by this mechanism in galaxy evolution. We present a population of 21 compact elliptical galaxies gathered with the Virtual Observatory. Follow-up spectroscopy and data mining, using high-resolution images and large databases, show that all the galaxies exhibit old metal-rich stellar populations different from those of dwarf elliptical galaxies","authors_text":"Alberto Micol, Daniel Durand, Eric Slezak, Florence Durret, Igor Chilingarian, Serguei Dodonov, Veronique Cayatte, Yves Revaz","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-01T23:56:40Z","title":"A Population of Compact Elliptical Galaxies Detected with the Virtual Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.0293","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":"sha256:67dc557533a7aa8c83af672a929e0e9b92e59d117ea55cb74e740f141594e247","target":"record","created_at":"2026-05-18T02:34:20Z","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":"1233fa4bf5cabeaa63d7c594ae955ddc97232ab0f1a0aa6c41f70292d08f786b","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-10-01T23:56:40Z","title_canon_sha256":"3f21415d5eccd83aa7dee0335459dbf04cbd0eafcd8d0bfdd4b5ede63a470dbf"},"schema_version":"1.0","source":{"id":"0910.0293","kind":"arxiv","version":1}},"canonical_sha256":"e0174ae273c4dff3a41f283321f89b5c64eba431c93642a39620510c8ddb0763","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e0174ae273c4dff3a41f283321f89b5c64eba431c93642a39620510c8ddb0763","first_computed_at":"2026-05-18T02:34:20.438168Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:20.438168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Us1r9nlP/szuVFvHo1/0yRFbrkIqS6jtZYnxH7VSH1bIMlQaplKfkIDXn01UUrJi7AkdfJ87z9z0bQLT29hPCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:20.438789Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.0293","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67dc557533a7aa8c83af672a929e0e9b92e59d117ea55cb74e740f141594e247","sha256:e9564d532c1224f679ece2bbbc9dcdf467e5a337ac26c6d514fd5340a2bacc34"],"state_sha256":"131360c9aaf9e287a442af56e9d46879c0edb25235fac43b5cb33a68edabe62b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9dg6k9sljmb10JELxaPEDWv4/6HeKA3HIhaeNpyCfI2W5QC42nEp9NGmPEm0YxkVq+CVn0aYl1GELhJSWuEODQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T00:31:10.048523Z","bundle_sha256":"922362bd938bbe01ab508cfb1f0fb1e1583adcaccd1d607fc4a059d1f97b4d94"}}