{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:EAAQ3YBV3G6M6T4GLNKGKBBB4F","short_pith_number":"pith:EAAQ3YBV","canonical_record":{"source":{"id":"1702.06026","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-20T15:53:04Z","cross_cats_sorted":[],"title_canon_sha256":"bb49b4cee5724ced0b28dd31fe951b339b13ea7cb2df29037b6a0c7bd344f82f","abstract_canon_sha256":"33e21174d963b94bc9b1645a1b224002f3de71bccfca161a39699642ba5cf11b"},"schema_version":"1.0"},"canonical_sha256":"20010de035d9bccf4f865b54650421e16fabdae8d334ce7b3c716d55feb7ed50","source":{"kind":"arxiv","id":"1702.06026","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.06026","created_at":"2026-05-18T00:48:14Z"},{"alias_kind":"arxiv_version","alias_value":"1702.06026v1","created_at":"2026-05-18T00:48:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.06026","created_at":"2026-05-18T00:48:14Z"},{"alias_kind":"pith_short_12","alias_value":"EAAQ3YBV3G6M","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EAAQ3YBV3G6M6T4G","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EAAQ3YBV","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:EAAQ3YBV3G6M6T4GLNKGKBBB4F","target":"record","payload":{"canonical_record":{"source":{"id":"1702.06026","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-20T15:53:04Z","cross_cats_sorted":[],"title_canon_sha256":"bb49b4cee5724ced0b28dd31fe951b339b13ea7cb2df29037b6a0c7bd344f82f","abstract_canon_sha256":"33e21174d963b94bc9b1645a1b224002f3de71bccfca161a39699642ba5cf11b"},"schema_version":"1.0"},"canonical_sha256":"20010de035d9bccf4f865b54650421e16fabdae8d334ce7b3c716d55feb7ed50","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:14.525348Z","signature_b64":"GVBErhQFl9mgy40KiuAUbZjO8wWLA9a/rGT+LA4KtFzZykt6gp7dyDG7irE+FCeyWIw/j7IS25uXaiBq0K87Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20010de035d9bccf4f865b54650421e16fabdae8d334ce7b3c716d55feb7ed50","last_reissued_at":"2026-05-18T00:48:14.524747Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:14.524747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.06026","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":"2026-05-18T00:48:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d97xq2P73aIZ28TtmGfy5qle+GEHPCuwS7adWo65+Ul8sX0TzY5rCkM0telGh/vGFmYwFfBPqrB/Up9P6rxfDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:26:52.029058Z"},"content_sha256":"0789f6fef6fa803548ddb64709c238e9010bdab5ecf2e88abfb4fa7594f2472f","schema_version":"1.0","event_id":"sha256:0789f6fef6fa803548ddb64709c238e9010bdab5ecf2e88abfb4fa7594f2472f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:EAAQ3YBV3G6M6T4GLNKGKBBB4F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Long-slit Spectroscopy of Edge-on Low Surface Brightness Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexei V. Filippenko, Hong Wu, Wei Du, Weikang Zheng, Yinan Zhu","submitted_at":"2017-02-20T15:53:04Z","abstract_excerpt":"We present long-slit optical spectra of 12 edge-on low surface brightness galaxies (LSBGs) positioned along their major axes. After performing reddening corrections for the emission-line fluxes measured from the extracted integrated spectra, we measured the gas-phase metallicities of our LSBG sample using both the [NII]/Ha and the R_23 diagnostics. Both sets of oxygen abundances show good agreement with each other, giving a median value of 12 + log(O/H) = 8.26 dex. In the luminosity-metallicity plot, our LSBG sample is consistent with the behavior of normal galaxies. In the mass-metallicity di"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.06026","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":"2026-05-18T00:48:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DAbd7Uzj4yA1TdJ6epqHwmqwD18X8ORixwkOPPm1c4KLEZrBvbeZMEfviVJylQGqajzOgr27qPniNJIscemaAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:26:52.029728Z"},"content_sha256":"8cdfdf01a34688560d31331cbebef4408c90f9ee43a96fe84ae2729ac2679be8","schema_version":"1.0","event_id":"sha256:8cdfdf01a34688560d31331cbebef4408c90f9ee43a96fe84ae2729ac2679be8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EAAQ3YBV3G6M6T4GLNKGKBBB4F/bundle.json","state_url":"https://pith.science/pith/EAAQ3YBV3G6M6T4GLNKGKBBB4F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EAAQ3YBV3G6M6T4GLNKGKBBB4F/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":"2026-05-27T11:26:52Z","links":{"resolver":"https://pith.science/pith/EAAQ3YBV3G6M6T4GLNKGKBBB4F","bundle":"https://pith.science/pith/EAAQ3YBV3G6M6T4GLNKGKBBB4F/bundle.json","state":"https://pith.science/pith/EAAQ3YBV3G6M6T4GLNKGKBBB4F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EAAQ3YBV3G6M6T4GLNKGKBBB4F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EAAQ3YBV3G6M6T4GLNKGKBBB4F","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":"33e21174d963b94bc9b1645a1b224002f3de71bccfca161a39699642ba5cf11b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-20T15:53:04Z","title_canon_sha256":"bb49b4cee5724ced0b28dd31fe951b339b13ea7cb2df29037b6a0c7bd344f82f"},"schema_version":"1.0","source":{"id":"1702.06026","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.06026","created_at":"2026-05-18T00:48:14Z"},{"alias_kind":"arxiv_version","alias_value":"1702.06026v1","created_at":"2026-05-18T00:48:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.06026","created_at":"2026-05-18T00:48:14Z"},{"alias_kind":"pith_short_12","alias_value":"EAAQ3YBV3G6M","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EAAQ3YBV3G6M6T4G","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EAAQ3YBV","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:8cdfdf01a34688560d31331cbebef4408c90f9ee43a96fe84ae2729ac2679be8","target":"graph","created_at":"2026-05-18T00:48:14Z","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 present long-slit optical spectra of 12 edge-on low surface brightness galaxies (LSBGs) positioned along their major axes. After performing reddening corrections for the emission-line fluxes measured from the extracted integrated spectra, we measured the gas-phase metallicities of our LSBG sample using both the [NII]/Ha and the R_23 diagnostics. Both sets of oxygen abundances show good agreement with each other, giving a median value of 12 + log(O/H) = 8.26 dex. In the luminosity-metallicity plot, our LSBG sample is consistent with the behavior of normal galaxies. In the mass-metallicity di","authors_text":"Alexei V. Filippenko, Hong Wu, Wei Du, Weikang Zheng, Yinan Zhu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-20T15:53:04Z","title":"Long-slit Spectroscopy of Edge-on Low Surface Brightness Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.06026","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":"sha256:0789f6fef6fa803548ddb64709c238e9010bdab5ecf2e88abfb4fa7594f2472f","target":"record","created_at":"2026-05-18T00:48:14Z","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":"33e21174d963b94bc9b1645a1b224002f3de71bccfca161a39699642ba5cf11b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-02-20T15:53:04Z","title_canon_sha256":"bb49b4cee5724ced0b28dd31fe951b339b13ea7cb2df29037b6a0c7bd344f82f"},"schema_version":"1.0","source":{"id":"1702.06026","kind":"arxiv","version":1}},"canonical_sha256":"20010de035d9bccf4f865b54650421e16fabdae8d334ce7b3c716d55feb7ed50","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20010de035d9bccf4f865b54650421e16fabdae8d334ce7b3c716d55feb7ed50","first_computed_at":"2026-05-18T00:48:14.524747Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:14.524747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GVBErhQFl9mgy40KiuAUbZjO8wWLA9a/rGT+LA4KtFzZykt6gp7dyDG7irE+FCeyWIw/j7IS25uXaiBq0K87Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:14.525348Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.06026","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0789f6fef6fa803548ddb64709c238e9010bdab5ecf2e88abfb4fa7594f2472f","sha256:8cdfdf01a34688560d31331cbebef4408c90f9ee43a96fe84ae2729ac2679be8"],"state_sha256":"41c319415b50f19a448f317b62db07983fd25cd39ba1205c85e3a7405991ae00"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tnab2YY5+wEVt0Ypb27vaR3RoyP00kw0r6a7dGcVTiTGrZm5fC51ES9a1ThvDDfSDB7sJze03f3qcUTenoIyBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T11:26:52.032551Z","bundle_sha256":"dab08e471a84080c7f342d2084ca4f25e853c44030d3925cb5b29a778f7f0e96"}}