{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:OBB5LQTTST2LAQZNL4WJZ5IV4I","short_pith_number":"pith:OBB5LQTT","canonical_record":{"source":{"id":"astro-ph/0703363","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-14T15:19:05Z","cross_cats_sorted":[],"title_canon_sha256":"361fe4e9f94373181f6c69005072353c1a34a099b6ba2472430fb681bd9de467","abstract_canon_sha256":"55fda62be66d9abf4a15834a93b73cfe55368706803cbcf9505940b29d09501e"},"schema_version":"1.0"},"canonical_sha256":"7043d5c27394f4b0432d5f2c9cf515e22a590152e8088ff659abc53766be8b7a","source":{"kind":"arxiv","id":"astro-ph/0703363","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703363","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703363v1","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703363","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"pith_short_12","alias_value":"OBB5LQTTST2L","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"pith_short_16","alias_value":"OBB5LQTTST2LAQZN","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"pith_short_8","alias_value":"OBB5LQTT","created_at":"2026-07-04T17:07:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:OBB5LQTTST2LAQZNL4WJZ5IV4I","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0703363","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-14T15:19:05Z","cross_cats_sorted":[],"title_canon_sha256":"361fe4e9f94373181f6c69005072353c1a34a099b6ba2472430fb681bd9de467","abstract_canon_sha256":"55fda62be66d9abf4a15834a93b73cfe55368706803cbcf9505940b29d09501e"},"schema_version":"1.0"},"canonical_sha256":"7043d5c27394f4b0432d5f2c9cf515e22a590152e8088ff659abc53766be8b7a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:07:46.821762Z","signature_b64":"EdSoLbp8G8oKJSZlKNezm9ppZg7tGq0/okcbh8gHjXND96SJ4dit6hd7sbGz4fgQx7EusgoAlMg8LJ5B5FOnDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7043d5c27394f4b0432d5f2c9cf515e22a590152e8088ff659abc53766be8b7a","last_reissued_at":"2026-07-04T17:07:46.821325Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:07:46.821325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0703363","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":"2026-07-04T17:07:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DNr2BXEGBvr870fSdTIXm/M699luDWqotsNXxnM9t3lkJPfu9ctwvWZa3SWHU2xnfAe9uRFty4fNuTiMtm6MAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:02:44.437941Z"},"content_sha256":"85d684fed50a602c1f9b5209f4b9d5df34ca7a381fb254df3759a7dd6a0627bc","schema_version":"1.0","event_id":"sha256:85d684fed50a602c1f9b5209f4b9d5df34ca7a381fb254df3759a7dd6a0627bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:OBB5LQTTST2LAQZNL4WJZ5IV4I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Kinematics of diffuse ionized gas in the disk halo interface of NGC 891 from Fabry-P\\'erot observations","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"J.M. van der Hulst, P.C. van der Kruit (Kapteyn Astronomical Institute Groningen), P. Kamphuis, R.F. Peletier (Kapteyn Astronomical Institute Groningen), R. J. Allen (Space Telescope Science Institute), R.-J. Dettmar (Astronomisches Institut, Ruhr-Universit\\\"at Bochum)","submitted_at":"2007-03-14T15:19:05Z","abstract_excerpt":"The properties of the gas in halos of galaxies constrain global models of the interstellar medium. Kinematical information is of particular interest since it is a clue to the origin of the gas. Here we report observations of the kinematics of the thick layer of the diffuse ionized gas in NGC 891 in order to determine the rotation curve of the halo gas. We have obtained a Fabry-P\\'erot data cube in Halpha to measure the kinematics of the halo gas with angular resolution much higher than obtained from HI 21 cm observations. The data cube was obtained with the TAURUS II spectrograph at the WHT on"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703363","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0703363/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T17:07:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q+5rA+Tjiyw7Ml6clgn4e4r2t7ab7AQ2U5mvEwPV6KzYBMJqDzZOBRTfJVCSePbwFLTJv1VSxgQ1YoJB5tJyAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:02:44.438301Z"},"content_sha256":"cf75b52c823e7f6034e9d5fdadcee2b26fc33e967ba7d34243a1f9cad56344d5","schema_version":"1.0","event_id":"sha256:cf75b52c823e7f6034e9d5fdadcee2b26fc33e967ba7d34243a1f9cad56344d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OBB5LQTTST2LAQZNL4WJZ5IV4I/bundle.json","state_url":"https://pith.science/pith/OBB5LQTTST2LAQZNL4WJZ5IV4I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OBB5LQTTST2LAQZNL4WJZ5IV4I/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":"2026-07-07T10:02:44Z","links":{"resolver":"https://pith.science/pith/OBB5LQTTST2LAQZNL4WJZ5IV4I","bundle":"https://pith.science/pith/OBB5LQTTST2LAQZNL4WJZ5IV4I/bundle.json","state":"https://pith.science/pith/OBB5LQTTST2LAQZNL4WJZ5IV4I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OBB5LQTTST2LAQZNL4WJZ5IV4I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:OBB5LQTTST2LAQZNL4WJZ5IV4I","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":"55fda62be66d9abf4a15834a93b73cfe55368706803cbcf9505940b29d09501e","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-14T15:19:05Z","title_canon_sha256":"361fe4e9f94373181f6c69005072353c1a34a099b6ba2472430fb681bd9de467"},"schema_version":"1.0","source":{"id":"astro-ph/0703363","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703363","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703363v1","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703363","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"pith_short_12","alias_value":"OBB5LQTTST2L","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"pith_short_16","alias_value":"OBB5LQTTST2LAQZN","created_at":"2026-07-04T17:07:46Z"},{"alias_kind":"pith_short_8","alias_value":"OBB5LQTT","created_at":"2026-07-04T17:07:46Z"}],"graph_snapshots":[{"event_id":"sha256:cf75b52c823e7f6034e9d5fdadcee2b26fc33e967ba7d34243a1f9cad56344d5","target":"graph","created_at":"2026-07-04T17:07:46Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0703363/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The properties of the gas in halos of galaxies constrain global models of the interstellar medium. Kinematical information is of particular interest since it is a clue to the origin of the gas. Here we report observations of the kinematics of the thick layer of the diffuse ionized gas in NGC 891 in order to determine the rotation curve of the halo gas. We have obtained a Fabry-P\\'erot data cube in Halpha to measure the kinematics of the halo gas with angular resolution much higher than obtained from HI 21 cm observations. The data cube was obtained with the TAURUS II spectrograph at the WHT on","authors_text":"J.M. van der Hulst, P.C. van der Kruit (Kapteyn Astronomical Institute Groningen), P. Kamphuis, R.F. Peletier (Kapteyn Astronomical Institute Groningen), R. J. Allen (Space Telescope Science Institute), R.-J. Dettmar (Astronomisches Institut, Ruhr-Universit\\\"at Bochum)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-03-14T15:19:05Z","title":"Kinematics of diffuse ionized gas in the disk halo interface of NGC 891 from Fabry-P\\'erot observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703363","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":"sha256:85d684fed50a602c1f9b5209f4b9d5df34ca7a381fb254df3759a7dd6a0627bc","target":"record","created_at":"2026-07-04T17:07:46Z","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":"55fda62be66d9abf4a15834a93b73cfe55368706803cbcf9505940b29d09501e","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-14T15:19:05Z","title_canon_sha256":"361fe4e9f94373181f6c69005072353c1a34a099b6ba2472430fb681bd9de467"},"schema_version":"1.0","source":{"id":"astro-ph/0703363","kind":"arxiv","version":1}},"canonical_sha256":"7043d5c27394f4b0432d5f2c9cf515e22a590152e8088ff659abc53766be8b7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7043d5c27394f4b0432d5f2c9cf515e22a590152e8088ff659abc53766be8b7a","first_computed_at":"2026-07-04T17:07:46.821325Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:07:46.821325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EdSoLbp8G8oKJSZlKNezm9ppZg7tGq0/okcbh8gHjXND96SJ4dit6hd7sbGz4fgQx7EusgoAlMg8LJ5B5FOnDw==","signature_status":"signed_v1","signed_at":"2026-07-04T17:07:46.821762Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0703363","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85d684fed50a602c1f9b5209f4b9d5df34ca7a381fb254df3759a7dd6a0627bc","sha256:cf75b52c823e7f6034e9d5fdadcee2b26fc33e967ba7d34243a1f9cad56344d5"],"state_sha256":"70d8a9c564dc539a763fa8b1c24b3982cd70c99d2e59581c5013cabbf545a3ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kQCYKuRTwMPEfCRC22Rfz3Qb4A8qIIv68ngSJr6+QQmiFUH+NTaz6aUsihoVxOZOvnxSrFWycUmPJvArqI9OCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:02:44.440127Z","bundle_sha256":"0eb1481c3f07361f8b6dae2a9c86410fed56ce483b38453d87f5dd58460cd066"}}