{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:VZ6KR7Y22MKHGPU7U5ER4HTPXZ","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":"5f7d624de724c2c04751fb91c64508195b8b4b0b5f22390852620bfbf1dbf729","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2009-08-26T03:29:31Z","title_canon_sha256":"483c776fbd05afe71ed4dcdfe9c43dd33ba614c19680a5bff8e25b653378b253"},"schema_version":"1.0","source":{"id":"0908.3723","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.3723","created_at":"2026-05-18T02:12:22Z"},{"alias_kind":"arxiv_version","alias_value":"0908.3723v1","created_at":"2026-05-18T02:12:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.3723","created_at":"2026-05-18T02:12:22Z"},{"alias_kind":"pith_short_12","alias_value":"VZ6KR7Y22MKH","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"VZ6KR7Y22MKHGPU7","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"VZ6KR7Y2","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:15cc27aff5e60416b76192109d04c5c8967a8a098f4b8303e02a5b5cb815539c","target":"graph","created_at":"2026-05-18T02:12:22Z","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 new JHK spectroscopy (R ~ 5000) of GQ Lup b, acquired with the near-infrared integral field spectrograph NIFS and the adaptive optics system ALTAIR at the Gemini North telescope. Angular differential imaging was used in the J and H bands to suppress the speckle noise from GQ Lup A; we show that this approach can provide improvements in signal-to-noise ratio (S/N) by a factor of 2 - 6 for companions located at subarcsecond separations. Based on high quality observations and GAIA synthetic spectra, we estimate the companion effective temperature to Teff = 2400 +/- 100 K, its gravity t","authors_text":"Christian Marois, David Lafreniere, Jean-Francois Lavigne, Rene Doyon, Travis Barman","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2009-08-26T03:29:31Z","title":"Near Infrared Observations of GQ Lup b Using the Gemini Integral Field Spectrograph NIFS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.3723","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":"sha256:095864c7cbb98c230870bfe925356e22ebb624624a4e429e621efa510e39f688","target":"record","created_at":"2026-05-18T02:12:22Z","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":"5f7d624de724c2c04751fb91c64508195b8b4b0b5f22390852620bfbf1dbf729","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2009-08-26T03:29:31Z","title_canon_sha256":"483c776fbd05afe71ed4dcdfe9c43dd33ba614c19680a5bff8e25b653378b253"},"schema_version":"1.0","source":{"id":"0908.3723","kind":"arxiv","version":1}},"canonical_sha256":"ae7ca8ff1ad314733e9fa7491e1e6fbe40aee708a853d69bf53ecb7b2668e59b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae7ca8ff1ad314733e9fa7491e1e6fbe40aee708a853d69bf53ecb7b2668e59b","first_computed_at":"2026-05-18T02:12:22.976234Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:22.976234Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o4bdh2O4Av0ynTkR2bApXrZ3COZCNi1tQzKrTwGZw8ZZnyCxbB4OqxNZXBrgg5aUwYG2ak2geaY8z7UAmGXIDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:22.977032Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.3723","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:095864c7cbb98c230870bfe925356e22ebb624624a4e429e621efa510e39f688","sha256:15cc27aff5e60416b76192109d04c5c8967a8a098f4b8303e02a5b5cb815539c"],"state_sha256":"e3b811584e23593f6ee3122f169cab8a930c5f797130792b771bc2af58119caf"}