{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:EHMODQ7RXRKONA7G5NF2C3QRB5","short_pith_number":"pith:EHMODQ7R","canonical_record":{"source":{"id":"0801.2570","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-16T21:12:19Z","cross_cats_sorted":[],"title_canon_sha256":"111f067251fd349f7fbc6cfc8e84ce11074e85626e9d0fc3c388b3863107dbcd","abstract_canon_sha256":"b458d7952eb21262746b2b658bd36152f89010ee1100290eed6026875cdecb8d"},"schema_version":"1.0"},"canonical_sha256":"21d8e1c3f1bc54e683e6eb4ba16e110f51a9e206b9f823d92a5e6278cd030102","source":{"kind":"arxiv","id":"0801.2570","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0801.2570","created_at":"2026-05-18T04:36:41Z"},{"alias_kind":"arxiv_version","alias_value":"0801.2570v1","created_at":"2026-05-18T04:36:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0801.2570","created_at":"2026-05-18T04:36:41Z"},{"alias_kind":"pith_short_12","alias_value":"EHMODQ7RXRKO","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"EHMODQ7RXRKONA7G","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"EHMODQ7R","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:EHMODQ7RXRKONA7G5NF2C3QRB5","target":"record","payload":{"canonical_record":{"source":{"id":"0801.2570","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-16T21:12:19Z","cross_cats_sorted":[],"title_canon_sha256":"111f067251fd349f7fbc6cfc8e84ce11074e85626e9d0fc3c388b3863107dbcd","abstract_canon_sha256":"b458d7952eb21262746b2b658bd36152f89010ee1100290eed6026875cdecb8d"},"schema_version":"1.0"},"canonical_sha256":"21d8e1c3f1bc54e683e6eb4ba16e110f51a9e206b9f823d92a5e6278cd030102","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:36:41.582220Z","signature_b64":"Gj/+MYnNx1lHEI5qGBvT9QCsOAqkbAQe5Qg/bLMXt/hiJvTZh9ibrX8OTXIbCawy3jWbJawN0CmZBfYZn+DlAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21d8e1c3f1bc54e683e6eb4ba16e110f51a9e206b9f823d92a5e6278cd030102","last_reissued_at":"2026-05-18T04:36:41.581781Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:36:41.581781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0801.2570","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":"2026-05-18T04:36:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pxgMte5GVsDEOLj9A/gDoETPEGZG3p14eNtj6N3tEqS9/79yRQk4U7taxwnXcVOVD6T5ZUMC6+xCBiyfueVfCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T12:26:02.044206Z"},"content_sha256":"2b10321799ff3b2b43074f3ecd910c076e0338a50308f4a13de84ef14419fe1e","schema_version":"1.0","event_id":"sha256:2b10321799ff3b2b43074f3ecd910c076e0338a50308f4a13de84ef14419fe1e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:EHMODQ7RXRKONA7G5NF2C3QRB5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Hot Gas Halos of Galaxies in Groups","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Breanna Binder, John S. Mulchaey, Tesla E. Jeltema","submitted_at":"2008-01-16T21:12:19Z","abstract_excerpt":"We use Chandra observations of 13 nearby groups of galaxies to investigate the hot gas content of their member galaxies. We find that a large fraction of near-IR bright, early-type galaxies in groups have extended X-ray emission, indicating that they retain significant hot gas halos even in these dense environments. In particular, we detect hot gas halos in ~80% of L_K > L_star galaxies. We do not find a significant difference in the L_K-L_X relation for detected group and cluster early-type galaxies. However, we detect X-ray emission from a significantly higher fraction of galaxies brighter t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0801.2570","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":"2026-05-18T04:36:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HFiI0KRbwW59aRO2iku+9VVvDDfuREAo6a/eqbQMCekcPrz5NZUTICWySUjN7upr3X63qYPCdHkqwkYGcnQ4Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T12:26:02.044588Z"},"content_sha256":"16c467378541f0c72cb7ae7cef228bbb11ff935c199d0af01fd6600d773c5b55","schema_version":"1.0","event_id":"sha256:16c467378541f0c72cb7ae7cef228bbb11ff935c199d0af01fd6600d773c5b55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EHMODQ7RXRKONA7G5NF2C3QRB5/bundle.json","state_url":"https://pith.science/pith/EHMODQ7RXRKONA7G5NF2C3QRB5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EHMODQ7RXRKONA7G5NF2C3QRB5/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":"2026-05-21T12:26:02Z","links":{"resolver":"https://pith.science/pith/EHMODQ7RXRKONA7G5NF2C3QRB5","bundle":"https://pith.science/pith/EHMODQ7RXRKONA7G5NF2C3QRB5/bundle.json","state":"https://pith.science/pith/EHMODQ7RXRKONA7G5NF2C3QRB5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EHMODQ7RXRKONA7G5NF2C3QRB5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:EHMODQ7RXRKONA7G5NF2C3QRB5","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":"b458d7952eb21262746b2b658bd36152f89010ee1100290eed6026875cdecb8d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-16T21:12:19Z","title_canon_sha256":"111f067251fd349f7fbc6cfc8e84ce11074e85626e9d0fc3c388b3863107dbcd"},"schema_version":"1.0","source":{"id":"0801.2570","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0801.2570","created_at":"2026-05-18T04:36:41Z"},{"alias_kind":"arxiv_version","alias_value":"0801.2570v1","created_at":"2026-05-18T04:36:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0801.2570","created_at":"2026-05-18T04:36:41Z"},{"alias_kind":"pith_short_12","alias_value":"EHMODQ7RXRKO","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"EHMODQ7RXRKONA7G","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"EHMODQ7R","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:16c467378541f0c72cb7ae7cef228bbb11ff935c199d0af01fd6600d773c5b55","target":"graph","created_at":"2026-05-18T04:36:41Z","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 use Chandra observations of 13 nearby groups of galaxies to investigate the hot gas content of their member galaxies. We find that a large fraction of near-IR bright, early-type galaxies in groups have extended X-ray emission, indicating that they retain significant hot gas halos even in these dense environments. In particular, we detect hot gas halos in ~80% of L_K > L_star galaxies. We do not find a significant difference in the L_K-L_X relation for detected group and cluster early-type galaxies. However, we detect X-ray emission from a significantly higher fraction of galaxies brighter t","authors_text":"Breanna Binder, John S. Mulchaey, Tesla E. Jeltema","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2008-01-16T21:12:19Z","title":"The Hot Gas Halos of Galaxies in Groups"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0801.2570","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":"sha256:2b10321799ff3b2b43074f3ecd910c076e0338a50308f4a13de84ef14419fe1e","target":"record","created_at":"2026-05-18T04:36:41Z","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":"b458d7952eb21262746b2b658bd36152f89010ee1100290eed6026875cdecb8d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-16T21:12:19Z","title_canon_sha256":"111f067251fd349f7fbc6cfc8e84ce11074e85626e9d0fc3c388b3863107dbcd"},"schema_version":"1.0","source":{"id":"0801.2570","kind":"arxiv","version":1}},"canonical_sha256":"21d8e1c3f1bc54e683e6eb4ba16e110f51a9e206b9f823d92a5e6278cd030102","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21d8e1c3f1bc54e683e6eb4ba16e110f51a9e206b9f823d92a5e6278cd030102","first_computed_at":"2026-05-18T04:36:41.581781Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:36:41.581781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gj/+MYnNx1lHEI5qGBvT9QCsOAqkbAQe5Qg/bLMXt/hiJvTZh9ibrX8OTXIbCawy3jWbJawN0CmZBfYZn+DlAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:36:41.582220Z","signed_message":"canonical_sha256_bytes"},"source_id":"0801.2570","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b10321799ff3b2b43074f3ecd910c076e0338a50308f4a13de84ef14419fe1e","sha256:16c467378541f0c72cb7ae7cef228bbb11ff935c199d0af01fd6600d773c5b55"],"state_sha256":"82c6137abe174cdc93177be6243c93348ff61faeb04ca9756a997b891121b5e2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YwvQ5p0mqXMJNfmPklDdC6mTUDbsjsLu8hWuCy6CcAdsAuMALjqX6DkQroD2eAH+5cFFGuAxdbRMOGkB5ziFCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T12:26:02.047948Z","bundle_sha256":"7c879b33619c97bdb0541720eb165ddc8d384166272ac62d4cd26e31c900028c"}}