{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:7JRT43RCHQO2MLB36OXCUDQQYD","short_pith_number":"pith:7JRT43RC","canonical_record":{"source":{"id":"1101.3221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-17T14:11:49Z","cross_cats_sorted":[],"title_canon_sha256":"bf0cd71db3b5b6cbf492c85678319f8ddaa9e905c29dd3ec831e541d7121c19d","abstract_canon_sha256":"ddace969eec631adca7ede1fa36efd3d2908ba8176338db02795f99e8864212b"},"schema_version":"1.0"},"canonical_sha256":"fa633e6e223c1da62c3bf3ae2a0e10c0d9528fbee172e96c805f3071a8ebe3b5","source":{"kind":"arxiv","id":"1101.3221","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3221","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3221v1","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3221","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"pith_short_12","alias_value":"7JRT43RCHQO2","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"7JRT43RCHQO2MLB3","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"7JRT43RC","created_at":"2026-05-18T12:26:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:7JRT43RCHQO2MLB36OXCUDQQYD","target":"record","payload":{"canonical_record":{"source":{"id":"1101.3221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-17T14:11:49Z","cross_cats_sorted":[],"title_canon_sha256":"bf0cd71db3b5b6cbf492c85678319f8ddaa9e905c29dd3ec831e541d7121c19d","abstract_canon_sha256":"ddace969eec631adca7ede1fa36efd3d2908ba8176338db02795f99e8864212b"},"schema_version":"1.0"},"canonical_sha256":"fa633e6e223c1da62c3bf3ae2a0e10c0d9528fbee172e96c805f3071a8ebe3b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:39.226050Z","signature_b64":"LpAE65VJ5Lsp2ZFP+/dngqgzKeA6M6+PQGeByR1Yj4M9s2r06NHhWtzK1sgy4hfxEFb3ILZfUjXDCBRrppe6BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fa633e6e223c1da62c3bf3ae2a0e10c0d9528fbee172e96c805f3071a8ebe3b5","last_reissued_at":"2026-05-18T02:03:39.225357Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:39.225357Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.3221","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":"2026-05-18T02:03:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4vEOguhHrsYpck+wCSpBh2zQjyxveIzeiyQSXYFsZjoXpsF3BNSg+OtfGh5IA8YV+Vfd9BcAejj3VRNG23hIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:18:31.017687Z"},"content_sha256":"cae3d16dd7f8f9f5cf553d0ad9f39a2d8039637b9a0890c0846d5d0171b44d5d","schema_version":"1.0","event_id":"sha256:cae3d16dd7f8f9f5cf553d0ad9f39a2d8039637b9a0890c0846d5d0171b44d5d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:7JRT43RCHQO2MLB36OXCUDQQYD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Infrared Narrow-Band Tomography of the Local Starburst NGC 1569 with LBT/LUCIFER","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"2: MPE, 3: LSW, 4: Ruhr-University, A. Bik (1), A. Germeroth (3), A. Pasquali (1), A. Quirrenbach (3), Bochum, C. Feiz (3), C. Storz (1), Fachhochschule fuer Technik, Garching, Gestaltung, Heidelberg, H. Gemperlein (2), H. Mandel (3), H.-W. Rix (1), K. Polsterer (4), L. Schaeffner (3), Mannheim), M Juette (4), M. Lehmitz (1), N. Ageorges (2), P. Buschkamp (2), P. Mueller (3), P. Weiser (5) (1: MPIA, R. Hoffmann (2), R. Lederer (2), R. Lenzen (1), S. Zibetti (1), U. Mall (1), V. Knierim (4), V. Naranjo (1), W. Brandner (1), W. Laun (1), W. Seifert (3)","submitted_at":"2011-01-17T14:11:49Z","abstract_excerpt":"We used the near-IR imager/spectrograph LUCIFER mounted on the Large Binocular Telescope (LBT) to image, with sub-arcsec seeing, the local dwarf starburst NGC 1569 in the JHK bands and HeI 1.08 micron, [FeII] 1.64 micron and Brgamma narrow-band filters. We obtained high-quality spatial maps of HeI, [FeII] and Brgamma emission across the galaxy, and used them together with HST/ACS images of NGC 1569 in the Halpha filter to derive the two-dimensional spatial map of the dust extinction and surface star formation rate density. We show that dust extinction is rather patchy and, on average, higher i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3221","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":"2026-05-18T02:03:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uCT/B+tbROnJ3G3DCPSrFzq5njo/fPHKm2HS5Tg6HZu5fvxTkQ57noZvalcPlXs6FNJ1wBlzf3J5D6XQviTmBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:18:31.018031Z"},"content_sha256":"e84071b638058f6c1b72f794b9928c23b097661e1dc37288774953379c1a2a2c","schema_version":"1.0","event_id":"sha256:e84071b638058f6c1b72f794b9928c23b097661e1dc37288774953379c1a2a2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7JRT43RCHQO2MLB36OXCUDQQYD/bundle.json","state_url":"https://pith.science/pith/7JRT43RCHQO2MLB36OXCUDQQYD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7JRT43RCHQO2MLB36OXCUDQQYD/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":"2026-06-01T15:18:31Z","links":{"resolver":"https://pith.science/pith/7JRT43RCHQO2MLB36OXCUDQQYD","bundle":"https://pith.science/pith/7JRT43RCHQO2MLB36OXCUDQQYD/bundle.json","state":"https://pith.science/pith/7JRT43RCHQO2MLB36OXCUDQQYD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7JRT43RCHQO2MLB36OXCUDQQYD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:7JRT43RCHQO2MLB36OXCUDQQYD","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":"ddace969eec631adca7ede1fa36efd3d2908ba8176338db02795f99e8864212b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-17T14:11:49Z","title_canon_sha256":"bf0cd71db3b5b6cbf492c85678319f8ddaa9e905c29dd3ec831e541d7121c19d"},"schema_version":"1.0","source":{"id":"1101.3221","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3221","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3221v1","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3221","created_at":"2026-05-18T02:03:39Z"},{"alias_kind":"pith_short_12","alias_value":"7JRT43RCHQO2","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_16","alias_value":"7JRT43RCHQO2MLB3","created_at":"2026-05-18T12:26:22Z"},{"alias_kind":"pith_short_8","alias_value":"7JRT43RC","created_at":"2026-05-18T12:26:22Z"}],"graph_snapshots":[{"event_id":"sha256:e84071b638058f6c1b72f794b9928c23b097661e1dc37288774953379c1a2a2c","target":"graph","created_at":"2026-05-18T02:03:39Z","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 used the near-IR imager/spectrograph LUCIFER mounted on the Large Binocular Telescope (LBT) to image, with sub-arcsec seeing, the local dwarf starburst NGC 1569 in the JHK bands and HeI 1.08 micron, [FeII] 1.64 micron and Brgamma narrow-band filters. We obtained high-quality spatial maps of HeI, [FeII] and Brgamma emission across the galaxy, and used them together with HST/ACS images of NGC 1569 in the Halpha filter to derive the two-dimensional spatial map of the dust extinction and surface star formation rate density. We show that dust extinction is rather patchy and, on average, higher i","authors_text":"2: MPE, 3: LSW, 4: Ruhr-University, A. Bik (1), A. Germeroth (3), A. Pasquali (1), A. Quirrenbach (3), Bochum, C. Feiz (3), C. Storz (1), Fachhochschule fuer Technik, Garching, Gestaltung, Heidelberg, H. Gemperlein (2), H. Mandel (3), H.-W. Rix (1), K. Polsterer (4), L. Schaeffner (3), Mannheim), M Juette (4), M. Lehmitz (1), N. Ageorges (2), P. Buschkamp (2), P. Mueller (3), P. Weiser (5) (1: MPIA, R. Hoffmann (2), R. Lederer (2), R. Lenzen (1), S. Zibetti (1), U. Mall (1), V. Knierim (4), V. Naranjo (1), W. Brandner (1), W. Laun (1), W. Seifert (3)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-17T14:11:49Z","title":"Infrared Narrow-Band Tomography of the Local Starburst NGC 1569 with LBT/LUCIFER"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3221","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:cae3d16dd7f8f9f5cf553d0ad9f39a2d8039637b9a0890c0846d5d0171b44d5d","target":"record","created_at":"2026-05-18T02:03:39Z","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":"ddace969eec631adca7ede1fa36efd3d2908ba8176338db02795f99e8864212b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-17T14:11:49Z","title_canon_sha256":"bf0cd71db3b5b6cbf492c85678319f8ddaa9e905c29dd3ec831e541d7121c19d"},"schema_version":"1.0","source":{"id":"1101.3221","kind":"arxiv","version":1}},"canonical_sha256":"fa633e6e223c1da62c3bf3ae2a0e10c0d9528fbee172e96c805f3071a8ebe3b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa633e6e223c1da62c3bf3ae2a0e10c0d9528fbee172e96c805f3071a8ebe3b5","first_computed_at":"2026-05-18T02:03:39.225357Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:39.225357Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LpAE65VJ5Lsp2ZFP+/dngqgzKeA6M6+PQGeByR1Yj4M9s2r06NHhWtzK1sgy4hfxEFb3ILZfUjXDCBRrppe6BA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:39.226050Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.3221","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cae3d16dd7f8f9f5cf553d0ad9f39a2d8039637b9a0890c0846d5d0171b44d5d","sha256:e84071b638058f6c1b72f794b9928c23b097661e1dc37288774953379c1a2a2c"],"state_sha256":"062275daf131c133db844876782658fb3755ce70e82852cce7f640d2264571b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GdnzveRkMrwd0jDxcXfv0L12/yhKQHbLxk3SYl4TkGAC3iSZnG/bfBD5zpSWt+e8h2Ah1yRg6nW+d7AjWNVjBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T15:18:31.019964Z","bundle_sha256":"d7aaa54a75556c3a1bad34031ec2e1d29a0570f1ea53825657a9e261b65e0819"}}