{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:XZ676PPFERB2FXPHLXBSJKFDH3","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":"7930d5c2d6a42b45816e3811d4933a95521db618a33384e08c0ec7502c7b3406","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-15T20:05:11Z","title_canon_sha256":"f4fb8796f6f0cff1ccdcfa14ee8b58e4552b8bd71932ac59d020914788c211e7"},"schema_version":"1.0","source":{"id":"1507.04368","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.04368","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"arxiv_version","alias_value":"1507.04368v2","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.04368","created_at":"2026-05-18T01:29:45Z"},{"alias_kind":"pith_short_12","alias_value":"XZ676PPFERB2","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XZ676PPFERB2FXPH","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XZ676PPF","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:540ca3c4ee6c6887fd0cc9823820a444c51ed34ef0809a9b5276f60a71f7d9b0","target":"graph","created_at":"2026-05-18T01:29:45Z","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 an IR-monitoring survey with the $Spitzer$ Space Telescope of the star forming region GGD 12-15. Over 1000 objects were monitored including about 350 objects within the central 5 arcminutes which is found to be especially dense in cluster members. The monitoring took place over 38 days and is part of the Young Stellar Object VARiability (YSOVAR) project. The region was also the subject of a contemporaneous 67ks $Chandra$ observation. The field includes 119 previously identified pre-main sequence star candidates. X-rays are detected from 164 objects, 90 of which are identified with c","authors_text":"(10) Dept. of Physics & Astronomy, (11) Physics, 2), (2) MIT Kavli Institute, 3), (3) Sagan Fellow, (4) Spitzer Science Center, 5), (5) Nasa Ames Research Center, 6), (6) University of Vienna, (7) Dept. of Astronomy, (8) Department of Astronomy, (9) Department of Physics Astronomy, A. M. Cody (4, Astronomy Department, California Institute of Technology, Department of Astrophysics, H. Moritz G\\\"unther (1, Inseok Song (11) ((1) Harvard--Smithsonian Center for Astrophysics, J. Forbrich (1, J. R. Stauffer (4), Katja Poppenhaeger (1, K. R. Covey (10), L. A. Hillenbrand (8), L. M. Rebull (4), Materials Science, Missouri State University, P. Plavchan (9), R. A. Gutermuth (7), Scott J. Wolk (1), University of Georgia), University of Massachusetts- Amherst, Western Washington University","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-15T20:05:11Z","title":"YSOVAR: Mid-infrared Variability Among YSOs in the Star Formation Region GGD 12-15"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.04368","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:c95933a18e4f92643e61477657da88255899c6982a9f20ed78eeee8da4f0120e","target":"record","created_at":"2026-05-18T01:29:45Z","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":"7930d5c2d6a42b45816e3811d4933a95521db618a33384e08c0ec7502c7b3406","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-15T20:05:11Z","title_canon_sha256":"f4fb8796f6f0cff1ccdcfa14ee8b58e4552b8bd71932ac59d020914788c211e7"},"schema_version":"1.0","source":{"id":"1507.04368","kind":"arxiv","version":2}},"canonical_sha256":"be7dff3de52443a2dde75dc324a8a33ee05d06ce3798905f25a6fa824957fa6f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"be7dff3de52443a2dde75dc324a8a33ee05d06ce3798905f25a6fa824957fa6f","first_computed_at":"2026-05-18T01:29:45.354868Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:45.354868Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eDIBKFEQYC4XOblVVlbYjNPt/dWvYbF8yusDp7ndWF2N9+X6lGlgNPmCdUxJtd0PkxBIWCDB3wY6vxcJ9jHRBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:45.355283Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.04368","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c95933a18e4f92643e61477657da88255899c6982a9f20ed78eeee8da4f0120e","sha256:540ca3c4ee6c6887fd0cc9823820a444c51ed34ef0809a9b5276f60a71f7d9b0"],"state_sha256":"49495e79bd28edd08e33197533300d73e897b83ad76ee9691e9a366b082780ab"}