{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:JVSH73226X5GSCK3G77YVVEMGK","short_pith_number":"pith:JVSH7322","canonical_record":{"source":{"id":"1005.3830","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-05-20T20:16:26Z","cross_cats_sorted":[],"title_canon_sha256":"cbc1fd3ca4e42ee7b94bf50216aa014f48ba4fc20a1709be8928b7c441ca9b52","abstract_canon_sha256":"fc3abf66984f0166a3da4674067f043b8ac825e6013f977a7f30fbcde44f7562"},"schema_version":"1.0"},"canonical_sha256":"4d647fef5af5fa69095b37ff8ad48c32bbcb53f96cf64a8c466d38c7663be955","source":{"kind":"arxiv","id":"1005.3830","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.3830","created_at":"2026-05-18T02:07:16Z"},{"alias_kind":"arxiv_version","alias_value":"1005.3830v1","created_at":"2026-05-18T02:07:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.3830","created_at":"2026-05-18T02:07:16Z"},{"alias_kind":"pith_short_12","alias_value":"JVSH73226X5G","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"JVSH73226X5GSCK3","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"JVSH7322","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:JVSH73226X5GSCK3G77YVVEMGK","target":"record","payload":{"canonical_record":{"source":{"id":"1005.3830","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-05-20T20:16:26Z","cross_cats_sorted":[],"title_canon_sha256":"cbc1fd3ca4e42ee7b94bf50216aa014f48ba4fc20a1709be8928b7c441ca9b52","abstract_canon_sha256":"fc3abf66984f0166a3da4674067f043b8ac825e6013f977a7f30fbcde44f7562"},"schema_version":"1.0"},"canonical_sha256":"4d647fef5af5fa69095b37ff8ad48c32bbcb53f96cf64a8c466d38c7663be955","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:07:16.013627Z","signature_b64":"WXe9doA6ptIuttNY9pljRxrW0UVEZKwv/8fN/eq8pmXu1LqeBRF2CWVBOXdelc/N3NzwYA1rYyXg76BhCd8gBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d647fef5af5fa69095b37ff8ad48c32bbcb53f96cf64a8c466d38c7663be955","last_reissued_at":"2026-05-18T02:07:16.013120Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:07:16.013120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1005.3830","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":"2026-05-18T02:07:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4JuN3wkTVgRFovsBinyIAcLsx7D9EZX32RhKk4rEa+a6f8JDOEkPTZjPlKLla+zGAa6KUBnBqjUZLuhZbiMjAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:31:02.261107Z"},"content_sha256":"272723b24ff4e1559c93dd1bc7a6c21b5deb7b2f327392fc374dca7c80eba7e8","schema_version":"1.0","event_id":"sha256:272723b24ff4e1559c93dd1bc7a6c21b5deb7b2f327392fc374dca7c80eba7e8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:JVSH73226X5GSCK3G77YVVEMGK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Herschel-PACS observation of the 10 Myr old T Tauri disk TW Hya: Constraining the disk gas mass","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Heras, A. Krivov, A. Mora, A. Roberge, B. Montesinos, B. Riaz, B. Vandenbussche, C. A. Grady, C. D. Howard, C. Eiroa, C. Martin-Zaidi, C. Pinte, D. Barrado, D. Fedele, D.R. Ardila, D.R. Ciardi, D.R. Poelman, E. Pantin, E. Solano, F. M\\'enard, G. Aresu, G. Duch\\^ene, G.J. White, G. Mathews, G. Meeus, G. Sandell, G. Wright, H. Nomura, H. Walker, I. de Gregorio-Monsalvo, I. Kamp, I. Mendigut\\'ia, I. Pascucci, I. Tilling, J.C. Augereau, J. Lebreton, J. M. Alacid, J. P. Williams, K. Rice, L. Podio, M. Morales-Calderon, N. Huelamo, N. Phillips, P. Riviere-Marichalar, P. Woitke, R. Liseau, S. Andrews, S. Brittain, S. Ramsay, W. Danchi, W.F. Thi, W.R.F. Dent","submitted_at":"2010-05-20T20:16:26Z","abstract_excerpt":"Planets are formed in disks around young stars. With an age of ~10 Myr, TW Hya is one of the nearest T Tauri stars that is still surrounded by a relatively massive disk. In addition a large number of molecules has been found in the TW Hya disk, making TW Hya the perfect test case in a large survey of disks with Herschel-PACS to directly study their gaseous component. We aim to constrain the gas and dust mass of the circumstellar disk around TW Hya. We observed the fine-structure lines of [OI] and [CII] as part of the Open-time large program GASPS. We complement this with continuum data and gro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.3830","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":"2026-05-18T02:07:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZVB6B5q7WjRighxg/X6XyLEvqbhpbgYirESf84SPgCIohk3iNhtW3a+MqHxR1JdmmX+BQqaR52NgtOIqQ35QDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:31:02.261835Z"},"content_sha256":"474575c7faa23632bc2ed4282a7af516ebaed08dcce34e1d3c134ce27905baed","schema_version":"1.0","event_id":"sha256:474575c7faa23632bc2ed4282a7af516ebaed08dcce34e1d3c134ce27905baed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JVSH73226X5GSCK3G77YVVEMGK/bundle.json","state_url":"https://pith.science/pith/JVSH73226X5GSCK3G77YVVEMGK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JVSH73226X5GSCK3G77YVVEMGK/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":"2026-06-08T19:31:02Z","links":{"resolver":"https://pith.science/pith/JVSH73226X5GSCK3G77YVVEMGK","bundle":"https://pith.science/pith/JVSH73226X5GSCK3G77YVVEMGK/bundle.json","state":"https://pith.science/pith/JVSH73226X5GSCK3G77YVVEMGK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JVSH73226X5GSCK3G77YVVEMGK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:JVSH73226X5GSCK3G77YVVEMGK","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":"fc3abf66984f0166a3da4674067f043b8ac825e6013f977a7f30fbcde44f7562","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-05-20T20:16:26Z","title_canon_sha256":"cbc1fd3ca4e42ee7b94bf50216aa014f48ba4fc20a1709be8928b7c441ca9b52"},"schema_version":"1.0","source":{"id":"1005.3830","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.3830","created_at":"2026-05-18T02:07:16Z"},{"alias_kind":"arxiv_version","alias_value":"1005.3830v1","created_at":"2026-05-18T02:07:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.3830","created_at":"2026-05-18T02:07:16Z"},{"alias_kind":"pith_short_12","alias_value":"JVSH73226X5G","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"JVSH73226X5GSCK3","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"JVSH7322","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:474575c7faa23632bc2ed4282a7af516ebaed08dcce34e1d3c134ce27905baed","target":"graph","created_at":"2026-05-18T02:07:16Z","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":"Planets are formed in disks around young stars. With an age of ~10 Myr, TW Hya is one of the nearest T Tauri stars that is still surrounded by a relatively massive disk. In addition a large number of molecules has been found in the TW Hya disk, making TW Hya the perfect test case in a large survey of disks with Herschel-PACS to directly study their gaseous component. We aim to constrain the gas and dust mass of the circumstellar disk around TW Hya. We observed the fine-structure lines of [OI] and [CII] as part of the Open-time large program GASPS. We complement this with continuum data and gro","authors_text":"A. Heras, A. Krivov, A. Mora, A. Roberge, B. Montesinos, B. Riaz, B. Vandenbussche, C. A. Grady, C. D. Howard, C. Eiroa, C. Martin-Zaidi, C. Pinte, D. Barrado, D. Fedele, D.R. Ardila, D.R. Ciardi, D.R. Poelman, E. Pantin, E. Solano, F. M\\'enard, G. Aresu, G. Duch\\^ene, G.J. White, G. Mathews, G. Meeus, G. Sandell, G. Wright, H. Nomura, H. Walker, I. de Gregorio-Monsalvo, I. Kamp, I. Mendigut\\'ia, I. Pascucci, I. Tilling, J.C. Augereau, J. Lebreton, J. M. Alacid, J. P. Williams, K. Rice, L. Podio, M. Morales-Calderon, N. Huelamo, N. Phillips, P. Riviere-Marichalar, P. Woitke, R. Liseau, S. Andrews, S. Brittain, S. Ramsay, W. Danchi, W.F. Thi, W.R.F. Dent","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-05-20T20:16:26Z","title":"Herschel-PACS observation of the 10 Myr old T Tauri disk TW Hya: Constraining the disk gas mass"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.3830","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":"sha256:272723b24ff4e1559c93dd1bc7a6c21b5deb7b2f327392fc374dca7c80eba7e8","target":"record","created_at":"2026-05-18T02:07:16Z","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":"fc3abf66984f0166a3da4674067f043b8ac825e6013f977a7f30fbcde44f7562","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-05-20T20:16:26Z","title_canon_sha256":"cbc1fd3ca4e42ee7b94bf50216aa014f48ba4fc20a1709be8928b7c441ca9b52"},"schema_version":"1.0","source":{"id":"1005.3830","kind":"arxiv","version":1}},"canonical_sha256":"4d647fef5af5fa69095b37ff8ad48c32bbcb53f96cf64a8c466d38c7663be955","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d647fef5af5fa69095b37ff8ad48c32bbcb53f96cf64a8c466d38c7663be955","first_computed_at":"2026-05-18T02:07:16.013120Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:07:16.013120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WXe9doA6ptIuttNY9pljRxrW0UVEZKwv/8fN/eq8pmXu1LqeBRF2CWVBOXdelc/N3NzwYA1rYyXg76BhCd8gBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:07:16.013627Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.3830","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:272723b24ff4e1559c93dd1bc7a6c21b5deb7b2f327392fc374dca7c80eba7e8","sha256:474575c7faa23632bc2ed4282a7af516ebaed08dcce34e1d3c134ce27905baed"],"state_sha256":"2cb6d9340644e65515951411085e6e034e71d4ede9f1321c4ff7d02918737aba"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g7JfjScilAPSLLKVf7Hrpxlunr+ihC6y1F/84zrAZ6Nv7xjAxsZYfhR8UqKcMIFBuvpqnS/ctLM2hZ9CfVIeDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T19:31:02.265885Z","bundle_sha256":"d691a158b2bce4ade0ed81f4953777235456620485e87535fd2e27f7c1185a8f"}}