{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:Q55DSGDFHQ4SO2OIZDCB6NVKQ7","short_pith_number":"pith:Q55DSGDF","canonical_record":{"source":{"id":"1512.04540","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-12-14T21:00:32Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"aab22c3729c80ff24d5db4c0241d1cc97826ac07dbc0a4ef10b11a1cb5905aa3","abstract_canon_sha256":"fd83b111324d8818a5e348e7a51ed93e827d69b742481164e32f76fc5b066399"},"schema_version":"1.0"},"canonical_sha256":"877a3918653c392769c8c8c41f36aa87c29e81dad68d84b835741a5e00b50b26","source":{"kind":"arxiv","id":"1512.04540","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.04540","created_at":"2026-05-18T01:20:41Z"},{"alias_kind":"arxiv_version","alias_value":"1512.04540v2","created_at":"2026-05-18T01:20:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.04540","created_at":"2026-05-18T01:20:41Z"},{"alias_kind":"pith_short_12","alias_value":"Q55DSGDFHQ4S","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q55DSGDFHQ4SO2OI","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q55DSGDF","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:Q55DSGDFHQ4SO2OIZDCB6NVKQ7","target":"record","payload":{"canonical_record":{"source":{"id":"1512.04540","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-12-14T21:00:32Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"aab22c3729c80ff24d5db4c0241d1cc97826ac07dbc0a4ef10b11a1cb5905aa3","abstract_canon_sha256":"fd83b111324d8818a5e348e7a51ed93e827d69b742481164e32f76fc5b066399"},"schema_version":"1.0"},"canonical_sha256":"877a3918653c392769c8c8c41f36aa87c29e81dad68d84b835741a5e00b50b26","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:41.042904Z","signature_b64":"hevezdGLjGBo74bil03Q5V5e39YdMc0NQNue7fDy1jPOYmBZ63VCF6KP7xe9crGPrhQeWeFgtdsmlXVdQOlhCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"877a3918653c392769c8c8c41f36aa87c29e81dad68d84b835741a5e00b50b26","last_reissued_at":"2026-05-18T01:20:41.042348Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:41.042348Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.04540","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":"2026-05-18T01:20:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m/ZwVAjtYUm66TiT68ZxaYsFGBaYlPXvssJbX1IWwwNagmnz8qNFbgV4Gn+5guamzj7QXwAfC9z7BG538ztqBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:46:13.363049Z"},"content_sha256":"a427e817453c40ef716bc2bff9bdd38d5a1dad2c676dd6f7aaaee6560d4514c2","schema_version":"1.0","event_id":"sha256:a427e817453c40ef716bc2bff9bdd38d5a1dad2c676dd6f7aaaee6560d4514c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:Q55DSGDFHQ4SO2OIZDCB6NVKQ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"MagAO Imaging of Long-period Objects (MILO). I. A Benchmark M Dwarf Companion Exciting a Massive Planet around the Sun-like Star HD 7449","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Alan P. Boss, Alycia Weinberger, Dante Minniti, Fred C. Adams, Guillem Anglada-Escude, Ian Thompson, Jackie Faherty, Jared R. Males, Jeffrey D. Crane, Johanna Teske, Katie M. Morzinski, Laird M. Close, Matias Diaz, Mercedes Lopez-Morales, Nathan Kaib, Pamela Arriagada, Philip M. Hinz, R. Paul Butler, Stephen Shectman, Timothy J. Rodigas","submitted_at":"2015-12-14T21:00:32Z","abstract_excerpt":"We present high-contrast Magellan adaptive optics (MagAO) images of HD 7449, a Sun-like star with one planet and a long-term radial velocity (RV) trend. We unambiguously detect the source of the long-term trend from 0.6-2.15 \\microns ~at a separation of \\about 0\\fasec 54. We use the object's colors and spectral energy distribution to show that it is most likely an M4-M5 dwarf (mass \\about 0.1-0.2 \\msun) at the same distance as the primary and is therefore likely bound. We also present new RVs measured with the Magellan/MIKE and PFS spectrometers and compile these with archival data from CORALI"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.04540","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":"2026-05-18T01:20:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p7DHUPdBRmz6b3qXON5na1grh8DjBsnZ+KK6CZ1Riw2SPxGaHqpqrh25qz0Kt8InnwmUNMW23QTMvoA0y/toDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:46:13.363732Z"},"content_sha256":"f7119c1982e85c12319d509b292becfc26d42a76c006ec993105dd32f8b612f8","schema_version":"1.0","event_id":"sha256:f7119c1982e85c12319d509b292becfc26d42a76c006ec993105dd32f8b612f8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q55DSGDFHQ4SO2OIZDCB6NVKQ7/bundle.json","state_url":"https://pith.science/pith/Q55DSGDFHQ4SO2OIZDCB6NVKQ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q55DSGDFHQ4SO2OIZDCB6NVKQ7/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":"2026-05-26T04:46:13Z","links":{"resolver":"https://pith.science/pith/Q55DSGDFHQ4SO2OIZDCB6NVKQ7","bundle":"https://pith.science/pith/Q55DSGDFHQ4SO2OIZDCB6NVKQ7/bundle.json","state":"https://pith.science/pith/Q55DSGDFHQ4SO2OIZDCB6NVKQ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q55DSGDFHQ4SO2OIZDCB6NVKQ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:Q55DSGDFHQ4SO2OIZDCB6NVKQ7","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":"fd83b111324d8818a5e348e7a51ed93e827d69b742481164e32f76fc5b066399","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-12-14T21:00:32Z","title_canon_sha256":"aab22c3729c80ff24d5db4c0241d1cc97826ac07dbc0a4ef10b11a1cb5905aa3"},"schema_version":"1.0","source":{"id":"1512.04540","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.04540","created_at":"2026-05-18T01:20:41Z"},{"alias_kind":"arxiv_version","alias_value":"1512.04540v2","created_at":"2026-05-18T01:20:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.04540","created_at":"2026-05-18T01:20:41Z"},{"alias_kind":"pith_short_12","alias_value":"Q55DSGDFHQ4S","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q55DSGDFHQ4SO2OI","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q55DSGDF","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:f7119c1982e85c12319d509b292becfc26d42a76c006ec993105dd32f8b612f8","target":"graph","created_at":"2026-05-18T01:20:41Z","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 present high-contrast Magellan adaptive optics (MagAO) images of HD 7449, a Sun-like star with one planet and a long-term radial velocity (RV) trend. We unambiguously detect the source of the long-term trend from 0.6-2.15 \\microns ~at a separation of \\about 0\\fasec 54. We use the object's colors and spectral energy distribution to show that it is most likely an M4-M5 dwarf (mass \\about 0.1-0.2 \\msun) at the same distance as the primary and is therefore likely bound. We also present new RVs measured with the Magellan/MIKE and PFS spectrometers and compile these with archival data from CORALI","authors_text":"Alan P. Boss, Alycia Weinberger, Dante Minniti, Fred C. Adams, Guillem Anglada-Escude, Ian Thompson, Jackie Faherty, Jared R. Males, Jeffrey D. Crane, Johanna Teske, Katie M. Morzinski, Laird M. Close, Matias Diaz, Mercedes Lopez-Morales, Nathan Kaib, Pamela Arriagada, Philip M. Hinz, R. Paul Butler, Stephen Shectman, Timothy J. Rodigas","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-12-14T21:00:32Z","title":"MagAO Imaging of Long-period Objects (MILO). I. A Benchmark M Dwarf Companion Exciting a Massive Planet around the Sun-like Star HD 7449"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.04540","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:a427e817453c40ef716bc2bff9bdd38d5a1dad2c676dd6f7aaaee6560d4514c2","target":"record","created_at":"2026-05-18T01:20:41Z","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":"fd83b111324d8818a5e348e7a51ed93e827d69b742481164e32f76fc5b066399","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-12-14T21:00:32Z","title_canon_sha256":"aab22c3729c80ff24d5db4c0241d1cc97826ac07dbc0a4ef10b11a1cb5905aa3"},"schema_version":"1.0","source":{"id":"1512.04540","kind":"arxiv","version":2}},"canonical_sha256":"877a3918653c392769c8c8c41f36aa87c29e81dad68d84b835741a5e00b50b26","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"877a3918653c392769c8c8c41f36aa87c29e81dad68d84b835741a5e00b50b26","first_computed_at":"2026-05-18T01:20:41.042348Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:41.042348Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hevezdGLjGBo74bil03Q5V5e39YdMc0NQNue7fDy1jPOYmBZ63VCF6KP7xe9crGPrhQeWeFgtdsmlXVdQOlhCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:41.042904Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.04540","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a427e817453c40ef716bc2bff9bdd38d5a1dad2c676dd6f7aaaee6560d4514c2","sha256:f7119c1982e85c12319d509b292becfc26d42a76c006ec993105dd32f8b612f8"],"state_sha256":"a54bad05a8a3fcb00f5bdf80d7073375749aae96f3b04aa930f3d0929d4d4167"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GtwfK8yLlAxRT/Mg744wkAJ74mnYUgCW/Zqs4c4XhkUd2cJv3Pvm8CJbB2ToOEPvlgJMkE6uF4X6E1NbXq1rDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T04:46:13.367242Z","bundle_sha256":"d8e5d2a5e442aac39cb3c758e672c890a6d7f309625cf6e6162bc2b049106b33"}}