{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DEJE27KMH5RYDIQ2EQETQDJTHP","short_pith_number":"pith:DEJE27KM","canonical_record":{"source":{"id":"1812.06993","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T19:00:08Z","cross_cats_sorted":[],"title_canon_sha256":"c03d409486d4b1edd2aa83c39117685df5f6457bd9d8b0e809eea7b865f0d2e1","abstract_canon_sha256":"2938af2209fd5962f570dd6cf453709ba1e676f835b0fed85a1bc94906a12ceb"},"schema_version":"1.0"},"canonical_sha256":"19124d7d4c3f6381a21a2409380d333bc78a1f57e86c789d1cf492e015b37ee6","source":{"kind":"arxiv","id":"1812.06993","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.06993","created_at":"2026-05-17T23:53:23Z"},{"alias_kind":"arxiv_version","alias_value":"1812.06993v2","created_at":"2026-05-17T23:53:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.06993","created_at":"2026-05-17T23:53:23Z"},{"alias_kind":"pith_short_12","alias_value":"DEJE27KMH5RY","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DEJE27KMH5RYDIQ2","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DEJE27KM","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DEJE27KMH5RYDIQ2EQETQDJTHP","target":"record","payload":{"canonical_record":{"source":{"id":"1812.06993","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T19:00:08Z","cross_cats_sorted":[],"title_canon_sha256":"c03d409486d4b1edd2aa83c39117685df5f6457bd9d8b0e809eea7b865f0d2e1","abstract_canon_sha256":"2938af2209fd5962f570dd6cf453709ba1e676f835b0fed85a1bc94906a12ceb"},"schema_version":"1.0"},"canonical_sha256":"19124d7d4c3f6381a21a2409380d333bc78a1f57e86c789d1cf492e015b37ee6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:53:23.471825Z","signature_b64":"MNE+VAJYwTXS3YgB12Jib5lBj1antCWDI+UePoE0yE9P25hcAHDnQVpS1NOcyRu/u15mPXRo/I5DcF3uS1qxAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"19124d7d4c3f6381a21a2409380d333bc78a1f57e86c789d1cf492e015b37ee6","last_reissued_at":"2026-05-17T23:53:23.471331Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:53:23.471331Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.06993","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":"2026-05-17T23:53:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rk0IIw88KqxMDTtspR/ayTxCA9VuQOhYvhiaxTU4UMQtTbwDA96bvmPQAhMmedpklYUbe6VAspcufPKSEuNXAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:04:30.254416Z"},"content_sha256":"4cb2f4ae1fff0b2d6858439920c8277613e02691480da4eee8eee230a084d391","schema_version":"1.0","event_id":"sha256:4cb2f4ae1fff0b2d6858439920c8277613e02691480da4eee8eee230a084d391"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DEJE27KMH5RYDIQ2EQETQDJTHP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A search for accreting young companions embedded in circumstellar disks: High-contrast H$\\alpha$ imaging with VLT/SPHERE","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"1), (10) ESO Santiago de Chile, (11) Marseille Universit\\'e, (12) Stockholm University, 13), (13) CNRS Lyon, 14), (14) CNRS Grenoble, (15) University of Michigan, (16) Universit\\\"at Bern, (17) Monash University, (18) NOVA, (19) University of Z\\\"urich, 20) ((1) ETH Zurich, (20) Universidad Diego Portales), (2) Max Planck Institute Heidelberg, (3) LESIA, (4) Leiden Observatory, 5), (5) Univ. Grenoble, 6), (6) Universidad de Chile, (7) Geneva Observatory, (8) Osservatorio Astronomico di Padova, (9) University of Amsterdam, A. Cheetham (7), A. J. Bohn (4), A.-L. Maire (2), A.-M. Lagrange (5), A. Vigan (11), A. Zurlo (11, C. Dominik (9), C. Ginski (4), C. Mordasini (16), C. Pinte (17, E. Buenzli (1), E. Hugot (11), F. Menard (5, F. Rigal (18), G. Chauvin (5, G. Cugno (1), G. van der Plas (5), H. Avenhaus (2), H. M. Schmid (1), J. Hagelberg (1), J. H. Girard (10), J. Milli (10), J. Pragt (18), J. Szul\\'agyi (19), M. Bonnefoy (5), M. Feldt (2), M. Janson (12), M. Langlois (11, M. Meyer (15, P. Baudoz (3), P. Feautrier (5), R. Gratton (8), R. Roelfsema (18), R. van Boekel (2), S. Desidera (8), S. Hunziker (1), S. P. Quanz (1), T. Stolker (1), Y. Magnard (5), Z. Wahhaj (10)","submitted_at":"2018-12-17T19:00:08Z","abstract_excerpt":"Aims: We want to detect and quantify observables related to accretion processes occurring locally in circumstellar disks, which could be attributed to young forming planets. We focus on objects known to host protoplanet candidates and/or disk structures thought to be the result of interactions with planets. Methods: We analyzed observations of 6 young stars (age $3.5-10$ Myr) and their surrounding environments with the SPHERE/ZIMPOL instrument on the VLT in the H$\\alpha$ filter (656 nm) and a nearby continuum filter (644.9 nm). Results: We re-detect the known accreting M-star companion HD14252"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.06993","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":"2026-05-17T23:53:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G8I90G6asXTcdbo5z6UUQvAtexPdn0AcP88Xj008VNrjoyywjOshut6C7LNu0Kl0ZTY7ylFlbFsNjkFGBXNrDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T22:04:30.255117Z"},"content_sha256":"ab7e42d983c5319fb8b1cd1efd474e9c3bef5186637354a4304cc9e8ae1ec3fb","schema_version":"1.0","event_id":"sha256:ab7e42d983c5319fb8b1cd1efd474e9c3bef5186637354a4304cc9e8ae1ec3fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DEJE27KMH5RYDIQ2EQETQDJTHP/bundle.json","state_url":"https://pith.science/pith/DEJE27KMH5RYDIQ2EQETQDJTHP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DEJE27KMH5RYDIQ2EQETQDJTHP/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":"2026-05-25T22:04:30Z","links":{"resolver":"https://pith.science/pith/DEJE27KMH5RYDIQ2EQETQDJTHP","bundle":"https://pith.science/pith/DEJE27KMH5RYDIQ2EQETQDJTHP/bundle.json","state":"https://pith.science/pith/DEJE27KMH5RYDIQ2EQETQDJTHP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DEJE27KMH5RYDIQ2EQETQDJTHP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DEJE27KMH5RYDIQ2EQETQDJTHP","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":"2938af2209fd5962f570dd6cf453709ba1e676f835b0fed85a1bc94906a12ceb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T19:00:08Z","title_canon_sha256":"c03d409486d4b1edd2aa83c39117685df5f6457bd9d8b0e809eea7b865f0d2e1"},"schema_version":"1.0","source":{"id":"1812.06993","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.06993","created_at":"2026-05-17T23:53:23Z"},{"alias_kind":"arxiv_version","alias_value":"1812.06993v2","created_at":"2026-05-17T23:53:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.06993","created_at":"2026-05-17T23:53:23Z"},{"alias_kind":"pith_short_12","alias_value":"DEJE27KMH5RY","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DEJE27KMH5RYDIQ2","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DEJE27KM","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:ab7e42d983c5319fb8b1cd1efd474e9c3bef5186637354a4304cc9e8ae1ec3fb","target":"graph","created_at":"2026-05-17T23:53:23Z","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":"Aims: We want to detect and quantify observables related to accretion processes occurring locally in circumstellar disks, which could be attributed to young forming planets. We focus on objects known to host protoplanet candidates and/or disk structures thought to be the result of interactions with planets. Methods: We analyzed observations of 6 young stars (age $3.5-10$ Myr) and their surrounding environments with the SPHERE/ZIMPOL instrument on the VLT in the H$\\alpha$ filter (656 nm) and a nearby continuum filter (644.9 nm). Results: We re-detect the known accreting M-star companion HD14252","authors_text":"1), (10) ESO Santiago de Chile, (11) Marseille Universit\\'e, (12) Stockholm University, 13), (13) CNRS Lyon, 14), (14) CNRS Grenoble, (15) University of Michigan, (16) Universit\\\"at Bern, (17) Monash University, (18) NOVA, (19) University of Z\\\"urich, 20) ((1) ETH Zurich, (20) Universidad Diego Portales), (2) Max Planck Institute Heidelberg, (3) LESIA, (4) Leiden Observatory, 5), (5) Univ. Grenoble, 6), (6) Universidad de Chile, (7) Geneva Observatory, (8) Osservatorio Astronomico di Padova, (9) University of Amsterdam, A. Cheetham (7), A. J. Bohn (4), A.-L. Maire (2), A.-M. Lagrange (5), A. Vigan (11), A. Zurlo (11, C. Dominik (9), C. Ginski (4), C. Mordasini (16), C. Pinte (17, E. Buenzli (1), E. Hugot (11), F. Menard (5, F. Rigal (18), G. Chauvin (5, G. Cugno (1), G. van der Plas (5), H. Avenhaus (2), H. M. Schmid (1), J. Hagelberg (1), J. H. Girard (10), J. Milli (10), J. Pragt (18), J. Szul\\'agyi (19), M. Bonnefoy (5), M. Feldt (2), M. Janson (12), M. Langlois (11, M. Meyer (15, P. Baudoz (3), P. Feautrier (5), R. Gratton (8), R. Roelfsema (18), R. van Boekel (2), S. Desidera (8), S. Hunziker (1), S. P. Quanz (1), T. Stolker (1), Y. Magnard (5), Z. Wahhaj (10)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T19:00:08Z","title":"A search for accreting young companions embedded in circumstellar disks: High-contrast H$\\alpha$ imaging with VLT/SPHERE"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.06993","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":"sha256:4cb2f4ae1fff0b2d6858439920c8277613e02691480da4eee8eee230a084d391","target":"record","created_at":"2026-05-17T23:53:23Z","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":"2938af2209fd5962f570dd6cf453709ba1e676f835b0fed85a1bc94906a12ceb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-12-17T19:00:08Z","title_canon_sha256":"c03d409486d4b1edd2aa83c39117685df5f6457bd9d8b0e809eea7b865f0d2e1"},"schema_version":"1.0","source":{"id":"1812.06993","kind":"arxiv","version":2}},"canonical_sha256":"19124d7d4c3f6381a21a2409380d333bc78a1f57e86c789d1cf492e015b37ee6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19124d7d4c3f6381a21a2409380d333bc78a1f57e86c789d1cf492e015b37ee6","first_computed_at":"2026-05-17T23:53:23.471331Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:53:23.471331Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MNE+VAJYwTXS3YgB12Jib5lBj1antCWDI+UePoE0yE9P25hcAHDnQVpS1NOcyRu/u15mPXRo/I5DcF3uS1qxAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:53:23.471825Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.06993","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4cb2f4ae1fff0b2d6858439920c8277613e02691480da4eee8eee230a084d391","sha256:ab7e42d983c5319fb8b1cd1efd474e9c3bef5186637354a4304cc9e8ae1ec3fb"],"state_sha256":"ad864fdb5ff4f70fb79e9651f0ba846b1b660d53ce1603d074d127bae1438e78"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lk8O19BK1tN+gx15HS7m/xvW2ccCA2u3bCQP7bkVsWEd6mehSYgZ8dgy9Aw2vSn51f+2WYS2MJIBIGN/7yvCBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T22:04:30.258530Z","bundle_sha256":"55b14bca6eaa6c7e3b22b1ce36497c23c8f53af00f9b4e9e7c64a0c30b80445a"}}