{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:AXPHMETRO6EP3HYPSB745T2L6C","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":"45560dad04d25751ad6e90c374d5fd3d7cfec12e60b115e3b0c6539e34272aaa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-23T12:07:19Z","title_canon_sha256":"fe79f7bf9843ed60e2ab9f8036a623c0d75cb40aba0953412caf3d3819f03e24"},"schema_version":"1.0","source":{"id":"1810.09804","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.09804","created_at":"2026-05-17T23:52:04Z"},{"alias_kind":"arxiv_version","alias_value":"1810.09804v2","created_at":"2026-05-17T23:52:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.09804","created_at":"2026-05-17T23:52:04Z"},{"alias_kind":"pith_short_12","alias_value":"AXPHMETRO6EP","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"AXPHMETRO6EP3HYP","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"AXPHMETR","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:36e3605bd5ffec9a7c7e79789f104a52469ee4a0cb73b270699a1bc751a50072","target":"graph","created_at":"2026-05-17T23:52:04Z","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 have observed the giant elliptical galaxy M87 during the Virgo Environmental Survey Tracing Galaxy Evolution (VESTIGE), a blind narrow-band Halpha+[NII] imaging survey of the Virgo cluster carried out with MegaCam at the Canada French Hawaii Telescope (CFHT). The deep narrow-band image confirmed the presence of a filament of ionised gas extending up to ~ 3 kpc in the north-western direction and ~ 8 kpc to the south-east, with a couple of plumes of ionised gas, the weakest of which, at ~ 18 kpc from the nucleus, was previously unknown. The analysis of deep optical images taken from the NGVS ","authors_text":"A. Boselli, A. Longobardi, E. Emsellem, E.W. Peng, F. Combes, G. Consolandi, G. Gavazzi, G. Hensler, G. Trinchieri, H. Plana, J. Braine, J.C. Cuillandre, J. Roediger, L. Ferrarese, M. Boquien, M. Fossati, M. Sarzi, M. Sun, P.A. Duc, P. Amram, P. Andreani, P. Cote, P. Serra, R. Sanchez-Janssen, S. Gwyn","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-23T12:07:19Z","title":"A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE).V. Properties of the ionised gas filament of M87"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.09804","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":"sha256:6d58fed39b5872d6a3ade4bfcdbcc768900392b628ba5a743208257ef9939357","target":"record","created_at":"2026-05-17T23:52:04Z","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":"45560dad04d25751ad6e90c374d5fd3d7cfec12e60b115e3b0c6539e34272aaa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-10-23T12:07:19Z","title_canon_sha256":"fe79f7bf9843ed60e2ab9f8036a623c0d75cb40aba0953412caf3d3819f03e24"},"schema_version":"1.0","source":{"id":"1810.09804","kind":"arxiv","version":2}},"canonical_sha256":"05de7612717788fd9f0f907fcecf4bf08322c6fb806513da00054c66515389b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05de7612717788fd9f0f907fcecf4bf08322c6fb806513da00054c66515389b5","first_computed_at":"2026-05-17T23:52:04.659965Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:04.659965Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xZQkS5yQO/XscbKCNNescXHtKTJMLgsnvgkt64ItVcIRb1SaKfMnwm32F8/ioisCD0xuQEgh0a3asUHPbiR/Dw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:04.660334Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.09804","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d58fed39b5872d6a3ade4bfcdbcc768900392b628ba5a743208257ef9939357","sha256:36e3605bd5ffec9a7c7e79789f104a52469ee4a0cb73b270699a1bc751a50072"],"state_sha256":"1315978328aeb181df903e8e09fa3e54369a703501d961903aa4e668c254cec3"}