{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:74BLLJNIVUFRM6M2WU3TY55TQE","short_pith_number":"pith:74BLLJNI","canonical_record":{"source":{"id":"astro-ph/0703169","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-08T05:08:21Z","cross_cats_sorted":[],"title_canon_sha256":"8c3e388ed0ab2217daf602c721d92c51e2afec18ecedae80a3453edb1e24cef8","abstract_canon_sha256":"b1e1107531b1e520e3c315a8b214b3c161aaddc17546620a9965b3e5f8cefb84"},"schema_version":"1.0"},"canonical_sha256":"ff02b5a5a8ad0b16799ab5373c77b38121f799b41ff0ee7c5aef2a304da96dcc","source":{"kind":"arxiv","id":"astro-ph/0703169","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703169","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703169v1","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703169","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"pith_short_12","alias_value":"74BLLJNIVUFR","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"74BLLJNIVUFRM6M2","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"74BLLJNI","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:74BLLJNIVUFRM6M2WU3TY55TQE","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0703169","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-08T05:08:21Z","cross_cats_sorted":[],"title_canon_sha256":"8c3e388ed0ab2217daf602c721d92c51e2afec18ecedae80a3453edb1e24cef8","abstract_canon_sha256":"b1e1107531b1e520e3c315a8b214b3c161aaddc17546620a9965b3e5f8cefb84"},"schema_version":"1.0"},"canonical_sha256":"ff02b5a5a8ad0b16799ab5373c77b38121f799b41ff0ee7c5aef2a304da96dcc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:05.867912Z","signature_b64":"13hph+VRtnj2AuN6HufMSV0DBBMw5OXAJg15mWiaDas7FftII7b7ND1564iRcun8ThC37U+zg/7vKzkznhL4Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff02b5a5a8ad0b16799ab5373c77b38121f799b41ff0ee7c5aef2a304da96dcc","last_reissued_at":"2026-05-18T04:29:05.867312Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:05.867312Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0703169","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":"2026-05-18T04:29:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZH0NK2yoGtTIujdLNI4VjSpe6ZfULdbUQY0YRwBZI19fNO90YTHhZFD7QdKrfe0E5XfMeFKxgjZRaUxWx9UzDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T17:10:10.749548Z"},"content_sha256":"b92fbcf4102ea813a3bef57e0a95b14b71a4893f6c092053f7122402e5a07c3d","schema_version":"1.0","event_id":"sha256:b92fbcf4102ea813a3bef57e0a95b14b71a4893f6c092053f7122402e5a07c3d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:74BLLJNIVUFRM6M2WU3TY55TQE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The origin of steep vertical stellar distribution in the Galactic disk","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Arunima Banerjee, Chanda J. Jog","submitted_at":"2007-03-08T05:08:21Z","abstract_excerpt":"Over the past two decades observations have revealed that the vertical density distribution of stars in galaxies near the mid-plane is substantially steeper than the sech^2 function that is expected from an isothermal approximation. However, the physical origin for this has not been explained so far. Here we show that such steep profiles result naturally even within the isothermal regime, on taking into account the gravitational force due to the gas. Due to its low velocity dispersion the gas is concentrated closer to the galactic mid-plane than the stars, and hence it strongly affects the ver"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703169","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":"2026-05-18T04:29:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6l0cs3Y3gioo12kqouEL0KGoK6RPXsvimXYvvBOe89eKGkVHD15WUGhvBVZoMq4NRw0hiRwkbLibUmEVNRhvBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T17:10:10.749999Z"},"content_sha256":"740f04fd0e4caf6201876e8619625240e419feabbd504f32b2fd1aec728b933f","schema_version":"1.0","event_id":"sha256:740f04fd0e4caf6201876e8619625240e419feabbd504f32b2fd1aec728b933f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/74BLLJNIVUFRM6M2WU3TY55TQE/bundle.json","state_url":"https://pith.science/pith/74BLLJNIVUFRM6M2WU3TY55TQE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/74BLLJNIVUFRM6M2WU3TY55TQE/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":"2026-08-07T17:10:10Z","links":{"resolver":"https://pith.science/pith/74BLLJNIVUFRM6M2WU3TY55TQE","bundle":"https://pith.science/pith/74BLLJNIVUFRM6M2WU3TY55TQE/bundle.json","state":"https://pith.science/pith/74BLLJNIVUFRM6M2WU3TY55TQE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/74BLLJNIVUFRM6M2WU3TY55TQE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:74BLLJNIVUFRM6M2WU3TY55TQE","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":"b1e1107531b1e520e3c315a8b214b3c161aaddc17546620a9965b3e5f8cefb84","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-08T05:08:21Z","title_canon_sha256":"8c3e388ed0ab2217daf602c721d92c51e2afec18ecedae80a3453edb1e24cef8"},"schema_version":"1.0","source":{"id":"astro-ph/0703169","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703169","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703169v1","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703169","created_at":"2026-05-18T04:29:05Z"},{"alias_kind":"pith_short_12","alias_value":"74BLLJNIVUFR","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"74BLLJNIVUFRM6M2","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"74BLLJNI","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:740f04fd0e4caf6201876e8619625240e419feabbd504f32b2fd1aec728b933f","target":"graph","created_at":"2026-05-18T04:29:05Z","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":"Over the past two decades observations have revealed that the vertical density distribution of stars in galaxies near the mid-plane is substantially steeper than the sech^2 function that is expected from an isothermal approximation. However, the physical origin for this has not been explained so far. Here we show that such steep profiles result naturally even within the isothermal regime, on taking into account the gravitational force due to the gas. Due to its low velocity dispersion the gas is concentrated closer to the galactic mid-plane than the stars, and hence it strongly affects the ver","authors_text":"Arunima Banerjee, Chanda J. Jog","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-03-08T05:08:21Z","title":"The origin of steep vertical stellar distribution in the Galactic disk"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703169","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:b92fbcf4102ea813a3bef57e0a95b14b71a4893f6c092053f7122402e5a07c3d","target":"record","created_at":"2026-05-18T04:29:05Z","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":"b1e1107531b1e520e3c315a8b214b3c161aaddc17546620a9965b3e5f8cefb84","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-08T05:08:21Z","title_canon_sha256":"8c3e388ed0ab2217daf602c721d92c51e2afec18ecedae80a3453edb1e24cef8"},"schema_version":"1.0","source":{"id":"astro-ph/0703169","kind":"arxiv","version":1}},"canonical_sha256":"ff02b5a5a8ad0b16799ab5373c77b38121f799b41ff0ee7c5aef2a304da96dcc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff02b5a5a8ad0b16799ab5373c77b38121f799b41ff0ee7c5aef2a304da96dcc","first_computed_at":"2026-05-18T04:29:05.867312Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:05.867312Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"13hph+VRtnj2AuN6HufMSV0DBBMw5OXAJg15mWiaDas7FftII7b7ND1564iRcun8ThC37U+zg/7vKzkznhL4Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:05.867912Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0703169","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b92fbcf4102ea813a3bef57e0a95b14b71a4893f6c092053f7122402e5a07c3d","sha256:740f04fd0e4caf6201876e8619625240e419feabbd504f32b2fd1aec728b933f"],"state_sha256":"138462dfe6e88d265917c13c287337967983476731bdc84f707e97ca8f2210c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4zT3Ai28HR8vIpN2QP1zT8Znn7qlR82lGE0tKC62Ro5KikFFpz/sQBlp/zTMnkNu6vbUGnEw3d5j6k7+qldECg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T17:10:10.753924Z","bundle_sha256":"f310d1fbf934e9d25667eaeb9e323478265925235c3930b863fbc12ae27476ab"}}