{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:7KXWF33K6RIZJC75MXBY4PMS44","short_pith_number":"pith:7KXWF33K","canonical_record":{"source":{"id":"1803.02725","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-07T15:49:28Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"b417034872636110e2eaf827411eb288d91b5cdc6f7218700a4ab624692770da","abstract_canon_sha256":"b8f21e5564e37d46d06d3b1f850003ff74881069269d303cde5aac3f854ad715"},"schema_version":"1.0"},"canonical_sha256":"faaf62ef6af451948bfd65c38e3d92e72174e104692c303809f140a5fae0a714","source":{"kind":"arxiv","id":"1803.02725","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.02725","created_at":"2026-05-18T00:09:15Z"},{"alias_kind":"arxiv_version","alias_value":"1803.02725v1","created_at":"2026-05-18T00:09:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.02725","created_at":"2026-05-18T00:09:15Z"},{"alias_kind":"pith_short_12","alias_value":"7KXWF33K6RIZ","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7KXWF33K6RIZJC75","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7KXWF33K","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:7KXWF33K6RIZJC75MXBY4PMS44","target":"record","payload":{"canonical_record":{"source":{"id":"1803.02725","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-07T15:49:28Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"b417034872636110e2eaf827411eb288d91b5cdc6f7218700a4ab624692770da","abstract_canon_sha256":"b8f21e5564e37d46d06d3b1f850003ff74881069269d303cde5aac3f854ad715"},"schema_version":"1.0"},"canonical_sha256":"faaf62ef6af451948bfd65c38e3d92e72174e104692c303809f140a5fae0a714","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:15.787065Z","signature_b64":"16qweZa38LQaeEjRQWKwQHjuDnKhJn9UD5eDkD4BR4YBo2+FG5K1U3097rJ6H7OgBMSKM6UsXUhSu7buL2vFCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"faaf62ef6af451948bfd65c38e3d92e72174e104692c303809f140a5fae0a714","last_reissued_at":"2026-05-18T00:09:15.786053Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:15.786053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.02725","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":"2026-05-18T00:09:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kzDqeEA21GzI6fCPp82aNRLc+Ud/1IPbUBv1lDRnQnwpakEEPMr0AyIDbkcDSoluBUZUYxcdVfbVNhdeEjxKBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:20:09.649347Z"},"content_sha256":"7e326664c5a7d6d2de3df421756ce026c815b9e959aaac84ad0c2ad19704bdf8","schema_version":"1.0","event_id":"sha256:7e326664c5a7d6d2de3df421756ce026c815b9e959aaac84ad0c2ad19704bdf8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:7KXWF33K6RIZJC75MXBY4PMS44","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a brown dwarf companion to the star HIP 64892","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"A. Baruffolo, A. Boccaletti, A. Cheetham, A. Costille, A. Delboulb\\'e, A.-L. Maire, A.-M. Lagrange, A. Orign\\'e, A. Pavlov, A. Roux, A. Sevin, A. Vigan, A. Zurlo, B. Biller, B. Salasnich, C. Dominik, C. Mordasini, C. Petit, C. Soenke, D. Fantinel, D. Le Mignant, D. Maurel, D. Mesa, D. Mouillet, D. Perret, D. Rouan, D. S\\'egransan, E. Cascone, E. Giro, E. Hugot, E. Lagadec, E. Sissa, E. Stadler, F. Madec, F. Menard, F. Rigal, F. Wildi, G. Chauvin, G. Rousset, H. Klahr, H. Le Coroller, J. Antichi, J.-F. Sauvage, J. Hagelberg, J.-L. Beuzit, J. Olofsson, J. Pragt, J. Ramos, J. Schlieder, K. Dohlen, L. Abe, L. Gluck, L. Weber, M. Bonnefoy, M. Carbillet, M. Carle, M. Feldt, M. Janson, M. Jaquet, M. Kasper, M. Keppler, M. Langlois, M. Llored, M. Meyer, M. Suarez, M. Turatto, N. Hubin, O. M\\\"oller-Nilsson, P. Baudoz, P. Blanchard, P. Feautrier, P. Martinez, P. Puget, P. Rabou, Q. Kral, R. Claudi, R. Gratton, R. Ligi, R. Roelfsema, S. Desidera, S. Peretti, S. Rochat, S. Udry, T. Buey, T. Fusco, T. Henning, T. Kopytova, T. Moulin, T. Schmidt, V. De Caprio, V. D'Orazi, Y. Magnard","submitted_at":"2018-03-07T15:49:28Z","abstract_excerpt":"We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT/SPHERE during the SHINE exoplanet survey. The host is a B9.5V member of the Lower-Centaurus-Crux subgroup of the Scorpius Centaurus OB association. The measured angular separation of the companion ($1.2705\\pm0.0023$\") corresponds to a projected distance of $159\\pm12$ AU. We observed the target with the dual-band imaging and long-slit spectroscopy modes of the IRDIS imager to obtain its SED and astrometry. In addition, we reprocessed archival NACO L-band data, from which we also recover the compani"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.02725","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":"2026-05-18T00:09:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ONRb8XQkqc6wRBGerRjtqrW9tHiobtKNyNTPyroJ0b5ZDlCZXZ1Z1hL2ZJdbii+wq8XU/5CwCSaHpOm1QzEsAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:20:09.649990Z"},"content_sha256":"4973bd672ac322f67985e6d3c9fe58abaf85bfdc8b930f6d5cbf5274b915a1ff","schema_version":"1.0","event_id":"sha256:4973bd672ac322f67985e6d3c9fe58abaf85bfdc8b930f6d5cbf5274b915a1ff"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7KXWF33K6RIZJC75MXBY4PMS44/bundle.json","state_url":"https://pith.science/pith/7KXWF33K6RIZJC75MXBY4PMS44/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7KXWF33K6RIZJC75MXBY4PMS44/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":"2026-05-26T21:20:09Z","links":{"resolver":"https://pith.science/pith/7KXWF33K6RIZJC75MXBY4PMS44","bundle":"https://pith.science/pith/7KXWF33K6RIZJC75MXBY4PMS44/bundle.json","state":"https://pith.science/pith/7KXWF33K6RIZJC75MXBY4PMS44/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7KXWF33K6RIZJC75MXBY4PMS44/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:7KXWF33K6RIZJC75MXBY4PMS44","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":"b8f21e5564e37d46d06d3b1f850003ff74881069269d303cde5aac3f854ad715","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-07T15:49:28Z","title_canon_sha256":"b417034872636110e2eaf827411eb288d91b5cdc6f7218700a4ab624692770da"},"schema_version":"1.0","source":{"id":"1803.02725","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.02725","created_at":"2026-05-18T00:09:15Z"},{"alias_kind":"arxiv_version","alias_value":"1803.02725v1","created_at":"2026-05-18T00:09:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.02725","created_at":"2026-05-18T00:09:15Z"},{"alias_kind":"pith_short_12","alias_value":"7KXWF33K6RIZ","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"7KXWF33K6RIZJC75","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"7KXWF33K","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:4973bd672ac322f67985e6d3c9fe58abaf85bfdc8b930f6d5cbf5274b915a1ff","target":"graph","created_at":"2026-05-18T00:09:15Z","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 report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT/SPHERE during the SHINE exoplanet survey. The host is a B9.5V member of the Lower-Centaurus-Crux subgroup of the Scorpius Centaurus OB association. The measured angular separation of the companion ($1.2705\\pm0.0023$\") corresponds to a projected distance of $159\\pm12$ AU. We observed the target with the dual-band imaging and long-slit spectroscopy modes of the IRDIS imager to obtain its SED and astrometry. In addition, we reprocessed archival NACO L-band data, from which we also recover the compani","authors_text":"A. Baruffolo, A. Boccaletti, A. Cheetham, A. Costille, A. Delboulb\\'e, A.-L. Maire, A.-M. Lagrange, A. Orign\\'e, A. Pavlov, A. Roux, A. Sevin, A. Vigan, A. Zurlo, B. Biller, B. Salasnich, C. Dominik, C. Mordasini, C. Petit, C. Soenke, D. Fantinel, D. Le Mignant, D. Maurel, D. Mesa, D. Mouillet, D. Perret, D. Rouan, D. S\\'egransan, E. Cascone, E. Giro, E. Hugot, E. Lagadec, E. Sissa, E. Stadler, F. Madec, F. Menard, F. Rigal, F. Wildi, G. Chauvin, G. Rousset, H. Klahr, H. Le Coroller, J. Antichi, J.-F. Sauvage, J. Hagelberg, J.-L. Beuzit, J. Olofsson, J. Pragt, J. Ramos, J. Schlieder, K. Dohlen, L. Abe, L. Gluck, L. Weber, M. Bonnefoy, M. Carbillet, M. Carle, M. Feldt, M. Janson, M. Jaquet, M. Kasper, M. Keppler, M. Langlois, M. Llored, M. Meyer, M. Suarez, M. Turatto, N. Hubin, O. M\\\"oller-Nilsson, P. Baudoz, P. Blanchard, P. Feautrier, P. Martinez, P. Puget, P. Rabou, Q. Kral, R. Claudi, R. Gratton, R. Ligi, R. Roelfsema, S. Desidera, S. Peretti, S. Rochat, S. Udry, T. Buey, T. Fusco, T. Henning, T. Kopytova, T. Moulin, T. Schmidt, V. De Caprio, V. D'Orazi, Y. Magnard","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-07T15:49:28Z","title":"Discovery of a brown dwarf companion to the star HIP 64892"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.02725","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":"sha256:7e326664c5a7d6d2de3df421756ce026c815b9e959aaac84ad0c2ad19704bdf8","target":"record","created_at":"2026-05-18T00:09:15Z","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":"b8f21e5564e37d46d06d3b1f850003ff74881069269d303cde5aac3f854ad715","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-07T15:49:28Z","title_canon_sha256":"b417034872636110e2eaf827411eb288d91b5cdc6f7218700a4ab624692770da"},"schema_version":"1.0","source":{"id":"1803.02725","kind":"arxiv","version":1}},"canonical_sha256":"faaf62ef6af451948bfd65c38e3d92e72174e104692c303809f140a5fae0a714","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"faaf62ef6af451948bfd65c38e3d92e72174e104692c303809f140a5fae0a714","first_computed_at":"2026-05-18T00:09:15.786053Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:15.786053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"16qweZa38LQaeEjRQWKwQHjuDnKhJn9UD5eDkD4BR4YBo2+FG5K1U3097rJ6H7OgBMSKM6UsXUhSu7buL2vFCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:15.787065Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.02725","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7e326664c5a7d6d2de3df421756ce026c815b9e959aaac84ad0c2ad19704bdf8","sha256:4973bd672ac322f67985e6d3c9fe58abaf85bfdc8b930f6d5cbf5274b915a1ff"],"state_sha256":"cb075ef61cf58aeb4287d6a82b777021f64fab68ff3e333e49920a9b1faff906"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M9EiItcBaQMx6j84SIeNmtQQWPkp8qH2kNcIr50KTLaUM3fEL7I+Uq23xHWekgd0KIk7WgLGmmmEfeATkN4VCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T21:20:09.653273Z","bundle_sha256":"35261109ba9b69c27ca2cf0faf46832a2143a27885b92c605319abc49f527a84"}}