{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:DSPAZL43V4P3DOE7CH3RNHSJ5Y","short_pith_number":"pith:DSPAZL43","canonical_record":{"source":{"id":"astro-ph/0504230","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-10T14:20:42Z","cross_cats_sorted":[],"title_canon_sha256":"74163569dbddb906b1eca44f2b3bedc0253733c491a4cd6d50fc892e9fb4ae15","abstract_canon_sha256":"4dfba58adb2995cb80eedc3050ff667634dda1beb7ff7dbb2d570d84e3f27728"},"schema_version":"1.0"},"canonical_sha256":"1c9e0caf9baf1fb1b89f11f7169e49ee33f0d35fdd3134cecf8c38cd0a3824ed","source":{"kind":"arxiv","id":"astro-ph/0504230","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0504230","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0504230v1","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0504230","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"pith_short_12","alias_value":"DSPAZL43V4P3","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"pith_short_16","alias_value":"DSPAZL43V4P3DOE7","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"pith_short_8","alias_value":"DSPAZL43","created_at":"2026-07-04T16:52:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:DSPAZL43V4P3DOE7CH3RNHSJ5Y","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0504230","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-10T14:20:42Z","cross_cats_sorted":[],"title_canon_sha256":"74163569dbddb906b1eca44f2b3bedc0253733c491a4cd6d50fc892e9fb4ae15","abstract_canon_sha256":"4dfba58adb2995cb80eedc3050ff667634dda1beb7ff7dbb2d570d84e3f27728"},"schema_version":"1.0"},"canonical_sha256":"1c9e0caf9baf1fb1b89f11f7169e49ee33f0d35fdd3134cecf8c38cd0a3824ed","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:52:09.753479Z","signature_b64":"OX5tsCz7zkhp2V9cWYmVqf2GPsXRrHkQToWQCOI4A7FBOCQQR8EPRY/VRBDQTHZvNrjqdKgFTuTSNvCsM+YxDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c9e0caf9baf1fb1b89f11f7169e49ee33f0d35fdd3134cecf8c38cd0a3824ed","last_reissued_at":"2026-07-04T16:52:09.753099Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:52:09.753099Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0504230","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":"2026-07-04T16:52:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t7DP51ND23cp7vfYY7452D1Abt0SRWTgpvTTTn1mrhJ6hGwm8UrMV1vUf4aZHR2ALAvau+oxcol4NMCcDytdCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T10:12:18.543962Z"},"content_sha256":"e374781327735394001e9a93e23859a9b33e2d3e15c09839818fec2d9396d3be","schema_version":"1.0","event_id":"sha256:e374781327735394001e9a93e23859a9b33e2d3e15c09839818fec2d9396d3be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:DSPAZL43V4P3DOE7CH3RNHSJ5Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Morphologies of Ultracompact HII Regions in W49A and Sgr B2: Prevalence of Shells and a Modified Classification Scheme","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. J. Mercer, C. G. De Pree, D. J. Wilner, J. Deblasio, L. E. Davis","submitted_at":"2005-04-10T14:20:42Z","abstract_excerpt":"We have used Very Large Array (VLA) observations of the massive star forming regions W49A and Sgr B2, obtained with resolutions from 2\\farcs0 to 0\\farcs04, to classify the morphologies of nearly 100 ultracompact HII regions. These high resolution, multi-frequency, multi-configuration VLA observations motivate several modifications of the existing morphological classification scheme for UC HII regions. In this work, we describe the modified morphology scheme and the criteria used in source classification. In particular, we drop the ``core-halo'' classification, add a ``bipolar'' classification,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0504230","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0504230/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:52:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MsKSQ4dd7wWl975DlPsbp58LBiy4BA8sJ609rEGDbL9sBJERj8Pk4cJAbMe9tVfvh05Xo0Qb8VeHEvDDM+kyDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T10:12:18.544513Z"},"content_sha256":"8299b55a5a7fc7751e88f138227738eb3ccaba557fe351aa8d726ea6cfa2a2bd","schema_version":"1.0","event_id":"sha256:8299b55a5a7fc7751e88f138227738eb3ccaba557fe351aa8d726ea6cfa2a2bd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DSPAZL43V4P3DOE7CH3RNHSJ5Y/bundle.json","state_url":"https://pith.science/pith/DSPAZL43V4P3DOE7CH3RNHSJ5Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DSPAZL43V4P3DOE7CH3RNHSJ5Y/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":"2026-08-09T10:12:18Z","links":{"resolver":"https://pith.science/pith/DSPAZL43V4P3DOE7CH3RNHSJ5Y","bundle":"https://pith.science/pith/DSPAZL43V4P3DOE7CH3RNHSJ5Y/bundle.json","state":"https://pith.science/pith/DSPAZL43V4P3DOE7CH3RNHSJ5Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DSPAZL43V4P3DOE7CH3RNHSJ5Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:DSPAZL43V4P3DOE7CH3RNHSJ5Y","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":"4dfba58adb2995cb80eedc3050ff667634dda1beb7ff7dbb2d570d84e3f27728","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-10T14:20:42Z","title_canon_sha256":"74163569dbddb906b1eca44f2b3bedc0253733c491a4cd6d50fc892e9fb4ae15"},"schema_version":"1.0","source":{"id":"astro-ph/0504230","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0504230","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0504230v1","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0504230","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"pith_short_12","alias_value":"DSPAZL43V4P3","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"pith_short_16","alias_value":"DSPAZL43V4P3DOE7","created_at":"2026-07-04T16:52:09Z"},{"alias_kind":"pith_short_8","alias_value":"DSPAZL43","created_at":"2026-07-04T16:52:09Z"}],"graph_snapshots":[{"event_id":"sha256:8299b55a5a7fc7751e88f138227738eb3ccaba557fe351aa8d726ea6cfa2a2bd","target":"graph","created_at":"2026-07-04T16:52:09Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0504230/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have used Very Large Array (VLA) observations of the massive star forming regions W49A and Sgr B2, obtained with resolutions from 2\\farcs0 to 0\\farcs04, to classify the morphologies of nearly 100 ultracompact HII regions. These high resolution, multi-frequency, multi-configuration VLA observations motivate several modifications of the existing morphological classification scheme for UC HII regions. In this work, we describe the modified morphology scheme and the criteria used in source classification. In particular, we drop the ``core-halo'' classification, add a ``bipolar'' classification,","authors_text":"A. J. Mercer, C. G. De Pree, D. J. Wilner, J. Deblasio, L. E. Davis","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-04-10T14:20:42Z","title":"Morphologies of Ultracompact HII Regions in W49A and Sgr B2: Prevalence of Shells and a Modified Classification Scheme"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0504230","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:e374781327735394001e9a93e23859a9b33e2d3e15c09839818fec2d9396d3be","target":"record","created_at":"2026-07-04T16:52:09Z","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":"4dfba58adb2995cb80eedc3050ff667634dda1beb7ff7dbb2d570d84e3f27728","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-04-10T14:20:42Z","title_canon_sha256":"74163569dbddb906b1eca44f2b3bedc0253733c491a4cd6d50fc892e9fb4ae15"},"schema_version":"1.0","source":{"id":"astro-ph/0504230","kind":"arxiv","version":1}},"canonical_sha256":"1c9e0caf9baf1fb1b89f11f7169e49ee33f0d35fdd3134cecf8c38cd0a3824ed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c9e0caf9baf1fb1b89f11f7169e49ee33f0d35fdd3134cecf8c38cd0a3824ed","first_computed_at":"2026-07-04T16:52:09.753099Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:52:09.753099Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OX5tsCz7zkhp2V9cWYmVqf2GPsXRrHkQToWQCOI4A7FBOCQQR8EPRY/VRBDQTHZvNrjqdKgFTuTSNvCsM+YxDg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:52:09.753479Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0504230","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e374781327735394001e9a93e23859a9b33e2d3e15c09839818fec2d9396d3be","sha256:8299b55a5a7fc7751e88f138227738eb3ccaba557fe351aa8d726ea6cfa2a2bd"],"state_sha256":"7557e793842a37d5ed9ce92e0f82f530c6b0bd6fd321494c166fa92a7bcaa9a5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hnqfS4MF6B7i4Z1k80KAyuqRwBVKbtXzJ1eImmYs5bkyZWTq1ysJxtbN9MRxKS6v/QRFJzOG0CyVkk9T3SRhAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T10:12:18.548632Z","bundle_sha256":"1070c5f3f7b0a269c4017083f88ef305401a0ef72c7b467f925f54de8736e50a"}}