{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZEE53PUNUWRVR5THIJNDQKMBUU","short_pith_number":"pith:ZEE53PUN","canonical_record":{"source":{"id":"1801.07437","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-01-23T08:38:25Z","cross_cats_sorted":[],"title_canon_sha256":"a8ea78bc792096332245799c985c757e811d19a1dfd387aacf62650e4ff7d735","abstract_canon_sha256":"c68197a218cb408ed6023c3db9f6eeb58dfab1c8575edba086915112ce6be56e"},"schema_version":"1.0"},"canonical_sha256":"c909ddbe8da5a358f667425a382981a514217286faaaf86702f951bdada14742","source":{"kind":"arxiv","id":"1801.07437","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.07437","created_at":"2026-05-18T00:14:40Z"},{"alias_kind":"arxiv_version","alias_value":"1801.07437v2","created_at":"2026-05-18T00:14:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.07437","created_at":"2026-05-18T00:14:40Z"},{"alias_kind":"pith_short_12","alias_value":"ZEE53PUNUWRV","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZEE53PUNUWRVR5TH","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZEE53PUN","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZEE53PUNUWRVR5THIJNDQKMBUU","target":"record","payload":{"canonical_record":{"source":{"id":"1801.07437","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-01-23T08:38:25Z","cross_cats_sorted":[],"title_canon_sha256":"a8ea78bc792096332245799c985c757e811d19a1dfd387aacf62650e4ff7d735","abstract_canon_sha256":"c68197a218cb408ed6023c3db9f6eeb58dfab1c8575edba086915112ce6be56e"},"schema_version":"1.0"},"canonical_sha256":"c909ddbe8da5a358f667425a382981a514217286faaaf86702f951bdada14742","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:40.460517Z","signature_b64":"e//M3v4gk+8TW5VJUA8NR9Gl8Thv4vFUJTgdggTBzmNPEi0j70Z9ZJHrC1tPpUloj+OCbIH2bUdd5PgvvFUgAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c909ddbe8da5a358f667425a382981a514217286faaaf86702f951bdada14742","last_reissued_at":"2026-05-18T00:14:40.460006Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:40.460006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.07437","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:14:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q4NiSKrSIA1Ri6pqv0Re1piauScOkWZSju3A1W4B4gampC+ZkPAO3V7SmAj+68VlOlR+CA2zUIZLC2vhAB6iDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:05:21.706198Z"},"content_sha256":"f10357a5fffaffeeb8f6eb1f95d17600e910aef72efcefe68105e6179c610577","schema_version":"1.0","event_id":"sha256:f10357a5fffaffeeb8f6eb1f95d17600e910aef72efcefe68105e6179c610577"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZEE53PUNUWRVR5THIJNDQKMBUU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Candidate Water Vapor Lines to Locate the $\\mathrm{H_2O}$ Snowline through High-dispersion Spectroscopic Observations. III. Submillimeter $\\mathrm{H_2}$$^{16}\\mathrm{O}$ and $\\mathrm{H_2}$$^{18}\\mathrm{O}$ Lines","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Catherine Walsh, Eiji Akiyama, Hideko Nomura, Mitsuhiko Honda, Shota Notsu, T. J. Millar, Tomoya Hirota","submitted_at":"2018-01-23T08:38:25Z","abstract_excerpt":"In this paper, we extend the results presented in our former papers (Notsu et al. 2016, 2017) on using ortho-$\\mathrm{H_2}$$^{16}\\mathrm{O}$ line profiles to constrain the location of the $\\mathrm{H_2O}$ snowline in T Tauri and Herbig Ae disks, to include sub-millimeter para-$\\mathrm{H_2}$$^{16}\\mathrm{O}$ and ortho- and para-$\\mathrm{H_2}$$^{18}\\mathrm{O}$ lines. Since the number densities of the ortho- and para-H$_{2}$$^{18}$O molecules are about 560 times smaller than their $^{16}$O analogues, they trace deeper into the disk than the ortho-H$_{2}$$^{16}$O lines (down to $z=0$, i.e., the mid"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.07437","kind":"arxiv","version":2},"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":"2026-05-18T00:14:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7LVATcEbEmWHNZVgwmONUOt5zcKYseW1a7XWqDWaRqoHXlpCeB/XYCvy3wnPjh2IzRe/7MOOr3uGhKCJwVMfAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:05:21.707016Z"},"content_sha256":"8b97191c68f5e5fe71f10129230ccf6d33dfbb6cc7df8893c08ea34b38f45501","schema_version":"1.0","event_id":"sha256:8b97191c68f5e5fe71f10129230ccf6d33dfbb6cc7df8893c08ea34b38f45501"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZEE53PUNUWRVR5THIJNDQKMBUU/bundle.json","state_url":"https://pith.science/pith/ZEE53PUNUWRVR5THIJNDQKMBUU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZEE53PUNUWRVR5THIJNDQKMBUU/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":"2026-05-31T16:05:21Z","links":{"resolver":"https://pith.science/pith/ZEE53PUNUWRVR5THIJNDQKMBUU","bundle":"https://pith.science/pith/ZEE53PUNUWRVR5THIJNDQKMBUU/bundle.json","state":"https://pith.science/pith/ZEE53PUNUWRVR5THIJNDQKMBUU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZEE53PUNUWRVR5THIJNDQKMBUU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZEE53PUNUWRVR5THIJNDQKMBUU","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":"c68197a218cb408ed6023c3db9f6eeb58dfab1c8575edba086915112ce6be56e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-01-23T08:38:25Z","title_canon_sha256":"a8ea78bc792096332245799c985c757e811d19a1dfd387aacf62650e4ff7d735"},"schema_version":"1.0","source":{"id":"1801.07437","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.07437","created_at":"2026-05-18T00:14:40Z"},{"alias_kind":"arxiv_version","alias_value":"1801.07437v2","created_at":"2026-05-18T00:14:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.07437","created_at":"2026-05-18T00:14:40Z"},{"alias_kind":"pith_short_12","alias_value":"ZEE53PUNUWRV","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZEE53PUNUWRVR5TH","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZEE53PUN","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:8b97191c68f5e5fe71f10129230ccf6d33dfbb6cc7df8893c08ea34b38f45501","target":"graph","created_at":"2026-05-18T00:14:40Z","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":"In this paper, we extend the results presented in our former papers (Notsu et al. 2016, 2017) on using ortho-$\\mathrm{H_2}$$^{16}\\mathrm{O}$ line profiles to constrain the location of the $\\mathrm{H_2O}$ snowline in T Tauri and Herbig Ae disks, to include sub-millimeter para-$\\mathrm{H_2}$$^{16}\\mathrm{O}$ and ortho- and para-$\\mathrm{H_2}$$^{18}\\mathrm{O}$ lines. Since the number densities of the ortho- and para-H$_{2}$$^{18}$O molecules are about 560 times smaller than their $^{16}$O analogues, they trace deeper into the disk than the ortho-H$_{2}$$^{16}$O lines (down to $z=0$, i.e., the mid","authors_text":"Catherine Walsh, Eiji Akiyama, Hideko Nomura, Mitsuhiko Honda, Shota Notsu, T. J. Millar, Tomoya Hirota","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-01-23T08:38:25Z","title":"Candidate Water Vapor Lines to Locate the $\\mathrm{H_2O}$ Snowline through High-dispersion Spectroscopic Observations. III. Submillimeter $\\mathrm{H_2}$$^{16}\\mathrm{O}$ and $\\mathrm{H_2}$$^{18}\\mathrm{O}$ Lines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.07437","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:f10357a5fffaffeeb8f6eb1f95d17600e910aef72efcefe68105e6179c610577","target":"record","created_at":"2026-05-18T00:14:40Z","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":"c68197a218cb408ed6023c3db9f6eeb58dfab1c8575edba086915112ce6be56e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-01-23T08:38:25Z","title_canon_sha256":"a8ea78bc792096332245799c985c757e811d19a1dfd387aacf62650e4ff7d735"},"schema_version":"1.0","source":{"id":"1801.07437","kind":"arxiv","version":2}},"canonical_sha256":"c909ddbe8da5a358f667425a382981a514217286faaaf86702f951bdada14742","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c909ddbe8da5a358f667425a382981a514217286faaaf86702f951bdada14742","first_computed_at":"2026-05-18T00:14:40.460006Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:14:40.460006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e//M3v4gk+8TW5VJUA8NR9Gl8Thv4vFUJTgdggTBzmNPEi0j70Z9ZJHrC1tPpUloj+OCbIH2bUdd5PgvvFUgAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:14:40.460517Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.07437","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f10357a5fffaffeeb8f6eb1f95d17600e910aef72efcefe68105e6179c610577","sha256:8b97191c68f5e5fe71f10129230ccf6d33dfbb6cc7df8893c08ea34b38f45501"],"state_sha256":"67288abcd75a6286ac5268afe3a0534c622072b129ab1e08e301c389e92560aa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"17Fy8RESAzN8EHBuw9srvoJ2/rrhZ0MTlTynSE69rah4bNlulH3BwiL/4pUPkaD6Vr1eHmvvJdJfFICyhI8ECQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:05:21.712698Z","bundle_sha256":"8fc6f2c688a15d2760a6a735f89dd655d8ac09691a7e348dffb92143b1197d4a"}}